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IEEFA Germany: RWE’s coal phaseout compensation demands defy market prices - Institute for Energy Economics & Financial Analysis : Institute for Energy Economics & Financial Analysis
If market price is the benchmark for compensating the early closure of coal assets, then recent deals indicate that Germany’s coal and lignite power plants and mines have very low value, and make a mockery of compensation claims by Germany’s biggest utility, RWE, under the country’s pending coal phaseout plan.

RWE says it wants to be compensated for the premature closure of its coal power plants in line with the most generous pay-outs of the past, a position that ignores the darkening outlook for coal mining and generation, and which pits the company against genuinely affected mining communities for precious taxpayer funds.
energy  fossil-fuel  renewables  economics  finance 
february 2019 by juliusbeezer
Liebreich: In Energy and Transportation, Stick it to the Orthodoxy! | Bloomberg NEF
The Orthodoxy Window is maintained by a whole ecosystem of supposed thought-leaders, all trying their hardest to avoid having to think uncomfortable thoughts. Industry bodies trumpeting the world’s vital interest in protecting fossil-fuel- and diesel-engine-producing incumbents; respected analysts who are nothing but oil industry shills; right-wing commentators who talk like libertarians but walk like corporatists; bloggers and Twitterati, whose certainty that the energy and transport sectors can never change is inversely proportional to their knowledge. Pity the general public, correctly wary of wrenching change, threatened by this mob each time they think of peeking outside the Orthodoxy Window...

However, there is much more to do. In too many areas the Orthodoxy Window is still tightly shut. For instance, the majority of people I meet still believe the following: the cost of managing intermittency is prohibitive; demand rebounds to eat all the benefits of energy efficiency; industrial processes are inevitably lumbering, inflexible and fossil-fuel powered; long-distance freight can only be carried by dense liquids; those lacking modern energy services would be better off waiting for a centralized grid, rather than using distributed solutions today; advanced biofuels will never work; the answer to every long-term question is hydrogen; self-driving cars will eat the world; England will never win another football World Cup.
energy  fossil-fuel  renewables  politics  agnotology  economics  oil 
february 2019 by juliusbeezer
Shenzhen's silent revolution: world's first fully electric bus fleet quietens Chinese megacity | Cities | The Guardian
Shenzhen now has 16,000 electric buses in total and is noticeably quieter for it. “We find that the buses are so quiet that people might not hear them coming,” says Joseph Ma, deputy general manager at Shenzhen Bus Group, the largest of the three main bus companies in the city. “In fact, we’ve received requests to add some artificial noise to the buses so that people can hear them. We’re considering it.”

The benefits from the switch from diesel buses to electric are not confined to less noise pollution: this fast-growing megacity of 12 million – which was a fishing village until designated China’s first “special economic zone” in the 1980s – is also expected to achieve an estimated reduction in CO2 emissions of 48% and cuts in pollutants such as nitrogen oxides, non-methane hydrocarbons and particulate matter.
china  transport  renewables 
december 2018 by juliusbeezer
A Nation-Sized Battery | Do the Math
Putting the pieces together, our national battery occupies a volume of 4.4 billion cubic meters, equivalent to a cube 1.6 km (one mile) on a side. The size in itself is not a problem: we’d naturally break up the battery and distribute it around the country. This battery would demand 5 trillion kg (5 billion tons) of lead.
Get the Lead Out!

A USGS report from 2011 reports 80 million tons (Mt) of lead in known reserves worldwide, with 7 Mt in the U.S. A note in the report indicates that the recent demonstration of lead associated with zinc, silver, and copper deposits places the estimated (undiscovered) lead resources of the world at 1.5 billion tons. That’s still not enough to build the battery for the U.S. alone. We could chose to be optimistic and assume that more lead will be identified over time. But let’s not ignore completely the fact that at this moment in time time, no one can point to a map of the world and tell you where even 2% of the necessary lead would come from to build a lead-acid battery big enough for the U.S.
energy  storage  us  renewables  technology 
november 2018 by juliusbeezer
Meet North America’s largest lithium-ion battery storage facility
“Although the Escondido facility is a 30-megawatt system, it’s technically three 10-megawatt systems. It’s one site with three different units that can work together or independently,” he shares. “So CAISO can set one 10-MW unit to do one thing, such as store power, while the other two 10-MW units contribute power to the electric grid or the reserve market”...

Reguly says the project addresses the reliability issues that have previously affected natural gas peaking power plants. “California is really leading the way in regards to the future of transmission,” he adds. “And what’s impressive is that this lithium-ion battery energy storage center, the largest in North America, was completed in a matter of months.”
energy  renewables  storage 
january 2018 by juliusbeezer
Going off-grid in the UK | Energy Matters
The solar array I chose as my UK example is on the roof of 10 Mossbank Way, Shrewsbury (data from Sunny Portal). With a capacity of 4kWp (16 Sanyo HIT-H250E01 panels), total 2016 generation of 3,809 kWh and a capacity factor of 10.8% it’s about as average as you can get for a rooftop UK system:...
An off-grid scenario that leaves Mossbank without electricity for almost a third of the year is clearly not acceptable, so we must evaluate other options. Can we eliminate blackout hours by increasing storage capacity? Adding another Powerwall reduces blackout hours from 2,769 to 2,678 and adding ten more lowers them to 2,323. Clearly adding more Powerwalls is not going to solve the problem. We need another option.
renewables  energy 
december 2017 by juliusbeezer
‘Death spiral’: half of Europe’s coal plants are losing money | Environment | The Guardian
Carbon Tracker analysed the revenues and operating costs of all the EU’s coal plants and found 54% are already loss making today. All coal power must be phased out if the EU is to meet the goals of the global Paris climate change agreement, but the current business plans of the utilities would see just a quarter of plants closed.

The new report estimates that closing all the plants by 2030 will avoid losses of €22bn for the plant’s owners, either shareholders or governments. Germany hosts the largest number of unprofitable coal plants and the losses avoided by early closure there total €12bn, with both RWE and Uniper highly exposed. Plans put forward to close German plants have been delayed by the failure of talks to form a new coalition government.

“The changing economics of renewables, as well as air pollution policy and rising carbon prices, has put EU coal power in a death spiral,” said Matt Gray, co-author of the Carbon Tracker report. “Utilities can’t do much to stop this other than drop coal or lobby governments and hope they will bail them out.”
energy  climatechange  fossil-fuel  renewables 
december 2017 by juliusbeezer
Huge boost for renewables as offshore windfarm costs fall to record low | Environment | The Guardian
the “exceptionally low” results of a government auction on Monday for subsidy contracts show two offshore windfarms will be built for £57.50 per MWh, way below even the most extreme predictions. The price is half of what new offshore windfarms were being awarded just two years ago.
energy  renewables  uk 
september 2017 by juliusbeezer
Getting Rid of Wind Energy in Europe | Energy Matters
France was the second largest electricity exporter in Europe in 2016. Germany and France form at block with about 10% surplus of electrical energy. This surplus is conveyed to other European countries. Safe operation of the highly meshed European AC power grid is a complicated matter. Due to the variability of wind and solar power, the grids are often operated close to the security limits.

Wind power curtailment is regularly necessary for relieving the pressure on the grids. It is known in Germany as redispatch. The cost of redispatch has been rapidly increasing since 2013 (fig. 2). The redispatch cost is still small compared with the total support for renewable energy in Germany, but the question is if the trend lasts.
energy  renewables  eu 
august 2017 by juliusbeezer
A dusty solar panel will see its power output reduce by as much as 30%:
jobs  renewables 
august 2017 by juliusbeezer
Analysis: Switch to electric vehicles would add just 10% to UK power demand | Carbon Brief
Note that EVs offer CO2 savings even under relatively CO2-heavy electricity grids including coal-fired generation. This is because EVs are more efficient than combustion-engine cars. Similarly, the CO2 associated with manufacturing EV batteries is more than offset by savings during EVs’ lifetimes.

A comprehensive literature review from the International Council on Clean Transportation (ICCT) says EVs offer CO2 savings of 40-50% compared to average combustion engine vehicles. This includes full lifecycle emissions including manufacture, use and electricity generation, based on an EU average grid mix. This means EVs could cut global emissions by 1.5 billion tonnes of CO2 per year in 2050, a second ICCT study says.
driving  renewables  energy  climatechange  pollution 
august 2017 by juliusbeezer
Factcheck: How much power will UK electric vehicles need? | Carbon Brief
In one scenario, where 100% of cars go electric but smart charging and shared autonomous vehicles help manage the impact on the grid, peak demand could be limited to around 6 gigawatts (GW) in 2050. This is equivalent to 10% of the current 60GW peak demand on a cold winter’s day...
scenarios suggest that with 23-25m EVs in 2050, peak demand could be as high as 18GW, or as low as 6GW, depending how well managed the roll out is.
driving  energy  renewables 
july 2017 by juliusbeezer
Bilan carbone d'une éolienne, c'est pas top! - bruno lalouette sur (13:15)
Le calcul du cout carbone d'une éolienne est cependant extrèmement variable en fonction de l'éolienne, notamment à cause de la distance que parcourt l'acier et le béton (les 20km pour le béton me semblent minimalistes, et l'acier parcours au final souvent des milliers de kilomètres), et du facteur de charge, qui a une très grande variabilité.

Au final, ces calculs amènent aux valeurs courantes de cout CO2 par KWh.
Le cout CO2 d'une éolienne est pour EDF entre 3 et 22g par KWh, plus que le cout CO2 d'une centrale nucléaire bien souvent (6 à 10g/KWh), mais effectivement moins que la moyenne globale francaise.
renewables  energy  nukes 
july 2017 by juliusbeezer
BlackRock Busts $1 Billion Green Power Goal With Second Fund - Bloomberg
BlackRock Inc. exceeded a $1 billion fundraising target for wind and solar investments for its latest global clean energy fund, underscoring investor interest in renewable energy amid policy uncertainty in key markets.

The second Global Renewable Power Fund, or GRP II, managed by BlackRock’s Real Assets closed after it raised $1.6 billion from 67 pension funds, insurance companies and institutional investors, according to a statement on Wednesday.
climatechange  finance  renewables 
july 2017 by juliusbeezer
Scotrenewables Tidal Power Ltd, leading the way in developing the tidal turbine concept.
The SRTT is an integrated tidal energy generator with two horizontal axis turbines mounted just under the sea surface on a floating hull platform. This ensures that the generators capture tidal flows where they are strongest, closest to the surface.

The vast majority of the turbines internal components are contained within the hull itself, above the waterline, for ease of access and maintenance. For more extensive maintenance and for installation and decommissioning, the turbine blades are retracted underneath the hull, a key patented design feature, reducing thdraught of the turbine for towing to and from harbour with low cost vessels.
april 2017 by juliusbeezer
Can quirky wind designs become mainstream? | Windpower Monthly
Arguably the antecedent of today's horizontal-axis wind turbine was the 1.25MW Smith-Putnam turbine. Built in the early 1940s in the US, the world's first wind turbine over 1MW operated for 1,100 hours before one of the two 20-metre blades broke off and was propelled over 200 metres away.
renewables  history 
april 2017 by juliusbeezer
An update on the Energiewende | Energy Matters
The reason renewables have had no detectable impact is that the added generation has gone towards filling increased demand and replacing nuclear generation rather than generation from gas, coal and lignite, which remains about the same as it was in 1990 (Figure 4, data from Clean Energy Wire). This is in line with Germany’s goal of shutting down its nuclear plants but will of course do nothing to reduce emissions:
germany  renewables  energy 
february 2017 by juliusbeezer
Eolien en mer: face aux lenteurs françaises, le PDG d'EDF prône la simplification
En novembre, le groupe EDF avait indiqué qu'il ne pourrait pas mettre en service avant 2021 ou 2022 trois parcs éoliens qu'il développe au large des côtes françaises, en retard par rapport à la date de 2020 initialement prévue du fait de recours déposés par des opposants à l'énergie éolienne et des écologistes.

Les projets concernés sont celui d'une puissance de 498 MW au large de Fécamp (Seine-Maritime), un second de 480 MW au large de Saint-Nazaire (Loire-Atlantique) et un troisième de 450 MW dans la Manche au niveau de Courseulles-sur-Mer (Calvados).

Ils avaient été attribués en 2012 à EDF lors d'un appel d'offres national.

Le parc éolien en mer développé par le groupe concurrent Engie au large de la Vendée a également été ralenti par des recours, rejetés par la justice fin 2016.
renewables  france 
january 2017 by juliusbeezer
UK 'need not fear electricity blackouts' says ex-National Grid boss - BBC News
Generating margins were forecast to be tight for this winter, but there has been no problem, despite a long cold windless spell during which wind energy has produced around 1% of electricity demand. The highest daily percentage of wind power was over 20%.

Mr Holliday, who was chief executive of National Grid until July 2016, forecasts that all future talk of blackouts will be made redundant by a revolution in flexible electricity, with customers using power when it is cheapest.

One current weapon at National Grid's disposal is a contract for flexible supply with firms which don't manufacture continuously.
energy  uk  renewables  grid 
january 2017 by juliusbeezer
World's Biggest Windmills Now Make Jumbo Jets Look Tiny - Bloomberg
“The doubling of turbine size this decade will allow wind farms in 2020 to use half the number of turbines compared to 2010,” said Tom Harries, an industry analyst at Bloomberg New Energy Finance. “This means fewer foundations, less cabling and simpler installation -- all key in slashing costs for the industry.”
renewables  business  finance 
december 2016 by juliusbeezer
The Glenmuckloch Pumped Storage Hydro Scheme | Energy Matters
My main gripe with this scheme is the business premise upon which it is based. Buccleuch say this in their nice presentation:

Will help in securing electricity supplies by balancing electricity demand with intermittency of some types of generation;
Increases the availability of renewable electricity at times of peak demand, thereby supporting the security of renewable energy supply, increasing the diversity of energy supplies and reducing carbon emissions;
energy  renewables 
december 2016 by juliusbeezer
E.ON completes explosive ordnance disposal in the Baltic Sea for Arkona project - E.ON SE
The Arkona project is located 35 kilometers northeast of the island of Rügen. The wind farm will generate 385 megawatts (MW) of power which computes as a supply of renewable energy for 400,000 households. Compared with conventionally generated electricity, Arkona will save up to 1.2 million tons of CO2 per year. 60 6-MW wind turbines manufactured by Siemens will be installed. The plants will be built on monopile foundations in water depths from 23 up to 37 meters
renewables  energy  germany 
december 2016 by juliusbeezer
The European Blackout Risk | Energy Matters
At 2000 hours Central European Time on February 8, 2012 combined electricity demand in the UK, France and Germany peaked at a high of 231GW during a winter cold snap. This caused no serious problems at the time, but the UK, France and Germany could have a combined total of as little as 210GW of capacity on-line this winter, and if another 231GW demand peak coincides with 210GW of available capacity the alternatives will be either large-scale “demand side” management (i.e. paying lots of industries and businesses to shut down) or blackouts.

In this post we will look at how these conclusions were arrived at and also at some of the uncertainties that make it so hard to predict blackout risks. The chief uncertainties in this case are a) how cold might it get, b) will the wind be blowing when and if it does get cold, c) how much of the French nuclear fleet will be down for inspection at the time and d) how many French households will turn their electric heaters up to “high”, as many of them did in 2012.
energy  europe  france  germany  uk  renewables  nukes 
november 2016 by juliusbeezer
An energy first as UK successfully transmits data via national electricity grid | Environment | The Guardian
The new data system, created using telecoms technology by Reactive Technologies (RT) and now successfully tested on the UK’s National Grid, could also allow the optimum use of intermittent renewable energy, an important feature given the fast-rising proportion of green energy on the grid.

Unlike the smart meters being rolled out by the UK government, the new system is anonymous, with no data on household energy use being collected and therefore avoiding concerns about privacy.

The system uses new technology to send messages through national electricity cables to any appliances with a smart plug connected to the mains, asking it to adjust its energy use. In the home, this could mean allowing the temperature of a freezer to increase by 0.5C to cut demand or turning up a water heater at 1am to utilise spare renewable energy.

In the commercial sector, where the technology will be first rolled out, it could mean water company pumps are used at specific times or an office air-conditioning system is adjusted.
grid  renewables  energy  networking  uk 
october 2016 by juliusbeezer
El Hierro completes a year of full operation | Energy Matters
The answer is simple. Intermittent renewable energy is not going to replace dispatchable fossil fuel generation without adequate energy storage backup, and since the amount of energy storage needed is almost always prohibitive it follows that an energy future based entirely on intermittent renewables is not a realistic prospect. As discussed at length in previous posts the only way to integrate significant amounts of intermittent renewable energy with the grid is by maintaining enough dispatchable capacity to cover demand when the wind doesn’t blow and the sun doesn’t shine. GdV has in fact already effectively defaulted into this operating mode.

The unexpected difficulties experienced in stabilizing the El Hierro grid at high wind penetration levels also come as an unpleasant surprise. It is not clear to what extent larger and more stable grids will experience similar problems, but the assumption that any problems of this type can be easily overcome with appropriate technology may require review.
renewables  energy 
july 2016 by juliusbeezer
Saint-Nazaire : feu vert pour le premier parc d'éoliennes en mer - France 3 Pays de la Loire
Situé au large de quelques-unes des plages du Débarquement, le projet de Courseulles-sur-mer (75 éoliennes développant 450 MW à 10 km des côtes) semble davantage menacé par des recours. Les opposants ont jusqu'au 10 octobre pour le contester. "On va déposer un recours. Avec plusieurs associations, on va plancher tout l'été. Notre argument principal est l'incompatibilité de ce projet avec celui de classement des plages du Débarquement au patrimoine de l'Unesco", explique Elsa Joly Malhomme, de l'association Libre Horizon, membre du réseau Pulse.
energy  renewables  france  politics 
july 2016 by juliusbeezer
Is large-scale energy storage dead? | Energy Matters
microscopic additions to installed capacity are apparently considered a cause for rejoicing. Greentechmedia recently waxed lyrical about the progress made by energy storage projects in 2015 . “Last year will likely be remembered as the year that energy storage got serious …. projects of all sizes were installed in record numbers ….” But when it goes on to list “the Biggest Energy Storage Projects Built Around the World in the Last Year” we find they’re all 98-pound weaklings:
energy  renewables  storage 
april 2016 by juliusbeezer
Connect North Sea oil platforms to wind farms
One potentially promising new example of a smart North Sea combination of renewable investment with oil and gas production is to use existing offshore installations as locations for new conversion and storage units that are used to enhance the business case and market potential of nearby offshore wind energy. The reason this concept makes sense and could help optimise the energy system is that on the one hand the installations and connecting grids are already there and on the other hand the renewable sources have to cope with intermittency, so backup and storage improves their long-term business case.
renewables  energy 
january 2016 by juliusbeezer
Réseau de communes et habitants refusant les compteurs Linky et Gazpar
Les Communes peuvent refuser
les compteurs Linky et Gazpar !

Elu-e-s, protégez la santé de vos administré-e-s et en particulier celle des enfants !
energy  france  networking  renewables 
january 2016 by juliusbeezer
Biggest wind turbines in world
Over the last five years, there has been a large amount of development in terms of raising the capacity of large wind turbines. Much of this came out of a large number of offshore projects that were put out to tender around 2010. In the UK alone 33GW was supposed to come online offshore. But since then, a significant percentage of this has been cancelled.

Like the projects, many of these new large wind turbines stayed on the drawing board. Some of those listed have only made it to the prototype stage. Taking wind turbines above the 5MW limit is an expensive business even for international conglomerates.
renewables  energy 
january 2016 by juliusbeezer
Google Europe Blog: Powering the Internet with renewable energy
Today we're announcing the largest, and most diverse, purchase of renewable energy ever made by a non-utility company. Google has already committed to purchase more renewable energy than any other company. Now, through a series of new wind and solar projects around the world, we’re one step closer to our commitment to triple our purchases of renewable energy by 2025 and our goal of powering 100% of our operations with clean energy. 842 MW of renewable energy around the world Today’s agreements will add an additional 842 megawatts of renewable energy capacity to power our data centers. Across three countries, we’re nearly doubling the amount of renewable energy we’ve purchased to date. We’re now up to 2 gigawatts—the equivalent to taking nearly 1 million cars off the road.
google  energy  renewables 
december 2015 by juliusbeezer
Uruguay makes dramatic shift to nearly 95% electricity from clean energy | Environment | The Guardian
In less than 10 years, Uruguay has slashed its carbon footprint without government subsidies or higher consumer costs, according to the national director of energy, Ramón Méndez .

In fact, he says that now that renewables provide 94.5% of the country’s electricity, prices are lower than in the past relative to inflation. There are also fewer power cuts because a diverse energy mix means greater resilience to droughts.
renewables  energy  uruguay 
december 2015 by juliusbeezer
Projet EMODI (Maintenance corrective et prédictive des câbles de fermes énergétiques offshore) | ANR - Agence Nationale de la Recherche
La transition énergétique devient une réalité. La montée en puissance des nouveaux usages et le raccordement au réseau électrique des sources de production décentralisées (solaires, éoliennes, hydroliennes, …) passe par le développement de réseaux intelligents et des « autoroutes de l’énergie ». Le câble d’énergie sous-marin constitue un élément central de ces nouvelles infrastructures européennes. Mais ses coûts élevés de production, d’installation et surtout de maintenance en milieu marin constituent aujourd’hui un frein pour le développement des Énergies Marines Renouvelables (EMR).

S’articulant autour de la plateforme marine SEM-REV et d’un banc expérimental de l'Institut français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR), le projet EMODI propose d’aborder la problématique de réduction des coûts et de fiabilisation des réseaux sous-marins.
renewables  energy  france 
november 2015 by juliusbeezer
European Institutional Investors Hungry for More Renewables | Offshore Wind
More than six out of ten (61%) institutional investors in Europe expect to increase their exposure to renewable infrastructure, with nearly half of them (48%) expecting further investments into offshore wind, according to a new study commissioned by alternative investment firm Aquila Capital.

A further 30% of investors plan to maintain their exposure to renewables over the next three years, with just 3% of respondents predicting a fall in allocations.

The research shows that nearly half (48%) of respondents cited portfolio diversification as the main reason for investing in renewables, closely followed by reliable long-term cash flows (44%) and portfolio returns (43%). Environmental factors were cited by only (22%) of investors as their primary driver.
renewables  finance 
november 2015 by juliusbeezer
DW: Offshore Wind to See over €200Bn CapEx Invested in Next Decade | Offshore Wind
Over €200bn of Capital Expenditure will be invested in the offshore wind sector over the next decade, resulting in forecast cumulative capacity of ~74GW by 2025. This will be driven by a large number of developments taking place in the UK, Germany and China and strengthened by the growth of new entrants to the offshore wind sector, such as France and the USA.
renewables  finance 
november 2015 by juliusbeezer
Université de Nantes - Soutenance : Jian ZHANG - "Optimization design and control strategies of a double stator permanent magnet generator for tidal current energy application."
Soutenance : Jian ZHANG - "Optimization design and control strategies of a double stator permanent magnet generator for tidal current energy application."
renewables  terminology 
november 2015 by juliusbeezer
Irish Renewables Cut CO2 Emissions by 23% in 2014 | Offshore Wind
Renewable electricity helped Ireland avoid 2.6 million tonnes of CO2 emissions in 2014, and is now one of the single biggest contributors to carbon dioxide emissions reductions in Ireland. Without renewables, power generation emissions would have been 23% higher.

According to SEAI, renewable electricity generation, consisting of wind, hydro, landfill gas, biomass and biogas, accounted for 22.7% of gross electricity consumption and avoided €250 million of fossil fuel imports in 2014.
energy  renewables  climatechange  ireland 
november 2015 by juliusbeezer
Call me emotional, but my anti-nuclear arguments are based on evidence | Scott Ludlam | Comment is free | The Guardian
If this new nuclear push is really about climate, it should engage with the real question: what is the fastest, cheapest, safest way to decarbonise the global stationary energy sector? The evidence shows that nuclear is neither fast, cheap, nor safe.
nukes  energy  renewables 
november 2015 by juliusbeezer
Top Economies to Double Use of Renewables by 2030 | Offshore Wind
Renewable energy supply is set to double collectively in eight major economies by 2030, 18 percent higher than previously projected growth rates, spurred on by new national climate and energy plans, according to new analysis by World Resources Institute (WRI).

WRI’s analysis, Assessing the Post-2020 Clean Energy Landscape, looks at plans from eight of the 10 largest greenhouse gas emitters—Brazil, China, European Union, India, Indonesia, Japan, Mexico and the United States—and finds that their cumulative clean energy supply will jump from approximately 9,000 TWh in 2012 to 20,000 TWh in 2030. This increase is equivalent to all of India’s current energy demand, WRI says.
renewables  energy 
november 2015 by juliusbeezer
Germany's electricity will be 33% Renewable in 2015
On July 25, 2015, Germany obtained 78% of its’ electricity from renewable sources. That was a new record, albeit for a single day. Up until now, the European leader has not produced more than 27% green energy in a year. According to a joint press release from the Centre for Solar Energy and Hydrogen Research Baden – Württemberg ( ZSW ) and the German Association of Energy and Water Industries ( BDEW ), Germany’s electricity will be 33% Renewable in 2015...
Germany is expected to produce around 193 billion kilowatt hours (billion kWh) of electricity from solar, wind and other renewable sources. That’s about one fifth more than the 161 billion kWh, or 27% of gross electricity consumption, in 2014.
renewables  germany  energy 
november 2015 by juliusbeezer
What America's First Offshore Wind Farm Reveals About GE’s Alstom Deal - GE Reports
Block Island is a teardrop-shaped piece of land some 13 miles off the coast of Rhode Island, U.S. It’s best known for its beaches, wind-swept bluffs and summer vacation homes. But a new attraction is quickly rising three miles off its southeastern shore.

There, in the choppy Atlantic surf, a company called Deepwater Wind started building what will be America’s first offshore wind farm. The farm will have five wind turbines, each rising to twice the height of the Statue of Liberty. When completed in late 2016, they will generate a combined 30 megawatts of electricity — enough to supply 17,000 homes — and turn Block Island into the most powerful coastal enclave in the northeast (with apologies to the Hamptons).

But there’s more to the project. It is also the physical example of GE’s future following its acquisition of Alstom’s power and grid business, which closed earlier this week.
renewables  france  us 
november 2015 by juliusbeezer
Lendosphere : crowdfunding et développement durable
Participez au refinancement de ce parc éolien en Pays de Retz (Loire-Atlantique) et prenez part à la transition énergétique !
renewables  finance 
october 2015 by juliusbeezer
Bill Gates Explains Why Only Socialism Can Save the Climate
But in terms of raw investment, China’s $80 billion green energy investment is more than both the U.S. ($34 billion) and Europe ($46 billion), combined. And those investments are already paying dividends. While coal is still China’s biggest source of electricity, the world’s biggest polluter aims to have its use of fossil fuels peak in 2030, and trend downward after that. Additionally, China’s solar production outpaces all other countries combined.

Between 2000 and 2012, China’s solar energy output increased dramatically from 3 megawatts to 21,000 megawatts. And its solar output increased by 67 percent between 2013 and 2014 alone. In 2014, China actually managed to decrease its CO2 emissions by 1 percent, with further reductions expected in the coming years.

China also powers more homes with wind energy than every nuclear power plant in the U.S. put together. China’s wind output provided electricity to 110 million homes in 2014, as its wind farms generated 16 percent more power than in 2013, and 77 gigawatts of additional wind power are currently under construction. China’s energy grid is currently powered by 100 gigawatts of green energy, and aims to double green energy output to 200 gigawatts by 2020.
energy  renewables  china 
october 2015 by juliusbeezer
Université de Nantes - Soutenance : Esseddik FERDJALLAH KHERKHACHI - "Diagnostic du système isolant des machines électriques par identification paramétrique dans un contexte de maintenance prédictive des turbines offshores."
Soutenance : Esseddik FERDJALLAH KHERKHACHI - "Diagnostic du système isolant des machines électriques par identification paramétrique dans un contexte de maintenance prédictive des turbines offshores."
A- A+ Aa

30 octobre 2015

10 heures

Campus de Saint-Nazaire
IUT de Saint Nazaire
salle 262
renewables  energy 
october 2015 by juliusbeezer
DECC: Amber Rudd reduces subsidies for renewable energy - Carbon Brief
“Let’s be clear: this is just opportunism. This is what I think is really behind it: the Treasury has woken up to the fact that decarbonising the economy is going to be very bad for tax revenues, so it doesn’t want energy efficiency and it doesn’t want renewables because they really drive gas out of the economy, and what the Treasury wants is lots of fracking so it can generate tax revenues from royalties and taxes. There’s a massive contradiction at the heart of government policy, which Amber Rudd’s announcement makes clear.”
energy  uk  renewables 
october 2015 by juliusbeezer
Nucléaire: EDF tente d’imposer « à tout prix » la relance du nucléaire en France | Michèle Rivasi
« Alors que l’Agence de l’environnement et de la maîtrise de l’énergie (Ademe) a dévoilé hier son scénario d’une France avec une électricité 100 % issue des énergies renouvelables (63 % d’éolien, 17 % de solaire, 13 % d’hydraulique et 7 % de géothermie et thermique renouvelable), il convient de mettre en regard le coût d’un tel scénario avec le coût actuel du nucléaire : l’EPR d’Hinkley Point produira un Mégawattheure (MWh) à 130 euros, le scénario de l’Ademe propose un MWh à 119 €. Cherchez l’erreur… »
energy  france  nukes  renewables 
october 2015 by juliusbeezer
(47) Une électricité 100 % verte en 2050 : le scénario de l'Ademe - Libération
Dans son cas de référence à 100 %, l’étude répartit la consommation d’énergie entre 63 % d’éolien, 17 % de solaire, 13 % d’hydraulique et 7 % de géothermie et thermique renouvelable, comme dans sa version provisoire révélée en avril. Dans ce scénario, le mégawattheure consommé coûte 119 euros, contre 117 euros pour celui avec 40 % d’énergies renouvelables, associé à 55 % de nucléaire et 5 % d’énergies fossiles. Une différence de prix minime qui, lors de la fuite en avril, avait servi d’arguments aux antinucléaires.

L’étude conclut que pour atteindre un maximum d’énergies renouvelables, une meilleure maîtrise de la demande d’électricité est une «condition essentielle». De même, le coût des technologies «doit continuer à baisser» et «l’acceptabilité est cruciale», prévient l’Ademe.
energy  renewables  france 
october 2015 by juliusbeezer
The most pessimistic climate change scientist has had a sudden change of heart | Environment | The Independent
Johan Rockström shocked environmentalists in 2009 when he identified nine categories of Nature that were essential for life as we know it, and warned that we had already crossed into dangerous territory on three of them – including climate change.

Rockström, an environmental science professor at Stockholm University and executive director of the Stockholm Resilience Centre, has since transferred a fourth category, deforestation, to his list of “planetary boundaries” in the danger zone, which threaten irreversible, devastating consequences to the planet.

But he has had a dramatic change of heart over global warming, and is more optimistic that the worst of the threat can be contained than he has been since 1992.

The nine threats

In the danger zone

Biodiversity loss: the fewer species in an ecosystem, the less healthy it is
Climate change
Eutrophication: Nitrate/phosphate build-up in water (from fertiliser)

Other risks to life

Ocean acidification
Freshwater consumption
Chemical pollution, such as plastic
Aerosol pollution
Stratospheric ozone depletion

His optimism is founded on the breakneck speed of innovation in wind and solar power in the past two to three years, which means that renewable energy is being deployed on a massive scale and, crucially, at a cost roughly comparable to fossil fuels.
renewables  climatechange  environment  energy 
october 2015 by juliusbeezer
Le nouveau Technocampus Ocean surfe sur l’innovation
Situé sur un espace de 60 hectares en cours d'aménagement près de l’usine Airbus et de Nantes-Atlantique, le bâtiment vaut à lui seul le coup d'œil avec ses façades habillées d'un parement évoquant une mer d'un bleu profond. Son vaste accueil fonctionne comme une vitrine technologique, conçue pour accueillir colloques et séminaires internationaux. Plus de 300 personnes, essentiellement des chercheurs et ingénieurs, y travailleront dès la fin 2015. 250 d’entre elles sont déjà installées : les équipes du centre de recherche technologique de DCNS (150 à 170 chercheurs), STX France, Dassault System, ACB, Hydrocéan, le CEA Tech Pays de la Loire…

Objectif de cette concentration de matière grise : « Muscler les filières de la construction navale et des énergies marines renouvelables, en favorisant la collaboration et la fertilisation des idées des uns et des autres »
renewables  nantes  france  science 
october 2015 by juliusbeezer
Onshore windfarms cheapest form of UK electricity, report shows | Environment | The Guardian
ew onshore windfarms are now the cheapest way for a power company to produce electricity in Britain, according to Bloomberg New Energy Finance (BNEF).

Costs have dropped to $85 (£55) per megawatt hour (MWh) compared with the current costs of about $115 for constructing coal or gas-fired plants, its analysis found.

The price of wind, which has fallen from $108 just 12 months ago, compares with nuclear which Bloomberg assesses at $190 – the latter up on a year ago as project delays are factored in to developments.
energy  renewables  finance  economics 
october 2015 by juliusbeezer
Solar & Wind Reach a Big Renewables Turning Point : BNEF - Bloomberg Business
For the first time, widespread adoption of renewables is effectively lowering the capacity factor for fossil fuels. That's because once a solar or wind project is built, the marginal cost of the electricity it produces is pretty much zero—free electricity—while coal and gas plants require more fuel for every new watt produced. If you're a power company with a choice, you choose the free stuff every time.
energy  renewables  economics  finance 
october 2015 by juliusbeezer
L'éolien en mer européen bat des records
Les six premiers mois de l'année 2015 ont vu la mise en service d'une puissance record d'éoliennes en mer.

L'association européenne Ewea, dans son bilan à mi-parcours, comptabilise en effet 2 342,9 MW de puissance installée dans les six premiers mois de l'année, plus qu'il n'y en a jamais eu dans une année entière, et trois fois plus qu'au premier semestre 2014.

Le total installé à ce jour, dans 82 parcs de 11 pays différents, était de 10 393,6 MW au 1er juillet.

Les 584 éoliennes qui ont été mises en service pendant ce premier semestre proviennent de seulement trois pays : l'Allemagne d'abord, avec 406 turbines et 1 706 MW, loin devant le Royaume-Uni (140 mâts pour 522 MW), qui reste cependant leader en capacité totale, et les Pays-Bas (38 mâts, 114 MW).

On notera l'absence du Danemark, le plus équipé par tête d'habitants. Et celle de la France, toujours au stade des enquêtes publiques.
renewables  europe 
august 2015 by juliusbeezer
Some things just don't change | Windpower Monthly
there has been plenty of change since 2010. The US market has grown, tanked, and come back again. China is now the world's biggest market despite cuts to installations and curtailments. The UK offshore market has promised much and delivered rather less, while the emerging markets from South Africa to South America have embraced wind and become the new place to do business.

But one underlying factor remains remarkably similar to 2010 — the superiority of the European manufacturers, if not in terms of the companies then in research and development.
renewables  international  business 
july 2015 by juliusbeezer
Europe's Emissions Decreased Another 5% in 2014
For the first time in forty years, the world’s C02 emissions have been held in check. Though they continue to rise in North America, China’s decreased for the first time in recorded history and Europe’s emissions decreased another 5% in 2014.
renewables  energy  climatechange 
june 2015 by juliusbeezer
Electric vehicles, battery technology and renewable energy: Research roundup - Journalist's Resource Journalist's Resource
“The costs of Li-ion battery packs continue to decline and the costs among market leaders are much lower than previously reported,” Nykvist and Nilsson conclude. “This has significant implications for the assumptions used when modeling future energy and transport systems and permits an optimistic outlook for BEVs contributing to low-carbon transport.”

Sustainability, electrical generation and infrastructure

While advances in battery technology could encourage wider adoption of EVs, the corresponding reduction in greenhouse-gas emissions is tied to the fuel used to produce the electricity — and that depends where you plug in. In Texas, it could be wind (10 grams of CO2 per kWh); in Illinois, nuclear (66 grams per kWh over a plant’s entire lifecycle); and in West Virginia, coal (more than a kilogram of CO2 per kWh). Running an EV with electricity from a coal plant thus produces as much C02 as a gas-powered car getting 33 miles per gallon — not a great advance.
driving  energy  renewables 
june 2015 by juliusbeezer
How Tesla Will Kill Your Portfolio, Even If You Don’t Own It | Casey Research
Conservation, demographics, smart grid and renewables all making traditional energy companies a poor bet.
energy  renewables 
march 2015 by juliusbeezer
Rassemblement pour la protection de la vasière de Méan
Le projet de détruire cette vasière s'inscrit dans un déplacement d'espaces industriels. Embarquant et débarquant camions et automobiles vers l'Espagne, le terminal roulier, actuellement implanté au pied du pont de Saint Nazaire, doit être déplacé afin de laisser un accès au fleuve à l'usine d'éoliennes Alstom et les ingénieurs du port ont décidé qu'il le sera sur la vasière de Méan, au plus près de l'actuel terminal mais de l'autre côté du pont :
environment  nantes  renewables 
march 2015 by juliusbeezer
Question of the Week: Does the media overreact to turbine failure? | Windpower Monthly
Recent reporting of the incident at Screggagh has certainly re-opened the question over media portrayal of onshore wind. Headlines such as 'Massive Wind Turbine Crashes To Ground' (The Mirror, 3 January) certainly do not make easy reading.

However, the wind farm owner responded quickly and appropriately, stopping the other turbines as a precaution until investigations had been completed. This resulted in far more neutral and factual headlines, such as 'Wind turbine collapse investigated' (BBC News online).
january 2015 by juliusbeezer
Wind Keeps Low Energy Costs for UK | Offshore Wind
In 2013, wind energy reduced the UK’s need to import coal by an estimated 4.9 million tonnes and gas by 1.4 billion cubic metres, a study by Cambridge Econometrics has revealed.

56% of the UK’s gas supplies and 79% of coal were imported in 2013. Without wind energy, import levels would have been higher. Wind is increasingly displacing the need for coal and gas, helping to reduce Britain’s dependence on foreign fossil fuels.

Wind energy generated enough power to meet the needs of 6.8 million homes in 2013 – and it would have cost more than £579 million to import the vast quantities of coal and gas displaced by wind.
TThe report concludes that as the cost of wind is predictable, using a greater amount of it to generate electricity amounts to investing in an insurance premium against the uncertain cost of gas.
The study reveals that if the cost of gas increases by 2030 in line with Government’s high prices forecast rather than its central prices forecast (a 41% increase), the cost of generating electricity would increase by 8%, whereas if the UK uses more wind it would increase by less than 4%.
energy  renewables 
january 2015 by juliusbeezer
Seabirds 'steer clear' of offshore wind farms | Environment | The Guardian
The study, which was carried out on behalf of the Scottish government, suggested more than 99% of seabirds would change direction to avoid colliding with wind farms, although a small proportion would not.
december 2014 by juliusbeezer
UK: Unmanned Barge Almost Hits Teesside OWF | Offshore Wind
Mike Puplett, Watch Manager at Humber Coastguard, said:

“This was a tricky operation in difficult weather conditions. Once made aware the barge was drifting towards the windfarm, we wanted to make sure a tow was re-established as quickly as possible. Luckily this was achieved, and no damage was done.
marine  renewables  heroism 
december 2014 by juliusbeezer
Hartlepool RNLI assists drifting barge near wind farm
asked to go to the assistance of a tug and barge that had lost their tow line off the Tees Fairway Buoy.

The tug had been towing the barge on its way from Sunderland to Lowestoft when it lost the tow line east of the wind farm off Redcar. The barge was drifting towards the restricted area around the turbines.
marine  renewables  heroism 
december 2014 by juliusbeezer
Lifeboat volunteer injured in windfarm drama - Hartlepool Mail
A line was passed from the tug to the Hartlepool lifeboat and we attached that to our line which we had attached to the recovered line. This was then passed to the tug.”

He added: “During this action one of our volunteer crew members injured his shoulder and our all-weather lifeboat suffered a technical issue and we had to return to Hartlepool Marina leaving the scene at 5.05 am.”

The tow line was taken hold of for a second time by a River Tees tug that had been standing by.

The tug and the barge were then escorted away from the windfarm and headed back off on their journey to Lowestoft.
marine  renewables  heroism 
december 2014 by juliusbeezer
Barge narrowly avoids hitting off-shore windfarm - The Scotsman
AN unmanned barge being towed from Orkney to Suffolk was at the centre of major North Sea alert today after drifting close to an offshore wind farm.
The 35 metre barge was being towed from Stromness to Lowestoft when the line to the towing vessel parted in the early hours of this morning off Teesside.
Once made aware the barge was drifting towards the windfarm, we wanted to make sure a tow was re-established as quickly as possible. Luckily this was achieved, and no damage was done.
renewables  marine  heroism 
december 2014 by juliusbeezer
EU Could Benefit from Meshed Offshore Grid | Offshore Wind
Meshed offshore grid can bring significant financial, technical, and environmental benefits at the EU level, said recent study.

The study, conducted for the European Commission, by PWC, Ecofys, and Tractebel Engineering compares the costs and benefits of a “meshed” offshore grid in the Northern Seas region with separate radial connections to shore for each wind farm.

It shows that the net effect is that the infrastructure investment cost is EUR 4.9 to 10.3 billion higher for coordinated network development, due to need for more offshore hubs and fewer cables connected to shore. However, this investment pays for itself through the techno-economical, environmental, and strategic benefits that are enabled in this coordinated network development.

The annual savings in 2030 including costs of losses, CO2 emissions and generation savings are EUR 1.5 to 5.1 billion for coordinated offshore grid development. These monetized benefits make the coordinated offshore grid profitable in all scenarios.
renewables  alternatif  energy  grid 
october 2014 by juliusbeezer
Défilé fin de règne au salon du nucléaire - Politis
La part du nucléaire dans la production mondiale d’électricité a chuté de 17,1 % à 10,9 % de 2001 à 2012, car des réacteurs vieillissants ferment, ceux du parc japonais sont toujours arrêtés depuis la catastrophe de Fukushima, et les nouvelles mises en service se font au compte-goutte. Le marché consiste essentiellement dans la gestion du parc existant, constate l’association. Même constat de déclin pour Greenpeace, qui souligne que l’éolien a drainé cinq fois plus d’investissements que le nucléaire en 2013 ! Comparaison saignante pour un pays qui loue le pragmatisme économique de son voisin : l’an dernier, les exportations de la France dans le nucléaire lui ont rapporté deux fois moins (5,6 milliards d’euros) que celles de l’Allemagne dans les énergies renouvelables.
energy  nukes  france  français  renewables 
october 2014 by juliusbeezer
La France en manque d'électricité en 2017 ?
Mais pourquoi passe t-on en si peu de temps d'une marge de sécurité de près de 3.000 MW à un déficit possible de 2.000 MW ? Une valeur, précise Hervé Mignon directeur à RTE, qui transpose en termes simples un calcul nettement plus compliqué sur le risque d'affronter plus de «3 heures de situation tendue» sur le réseau
energy  renewables  france 
september 2014 by juliusbeezer
Benefits Of Wind Power (For Real) | CleanTechnica
here are some of the ways Koch-funded groups manufacture opposition to wind power and other renewables:
renewables  climatechange  politics  agnotology 
june 2014 by juliusbeezer
The Key To Germany's Solar Potential Is Energy Storage
Between 1 pm and 2 pm on Friday, June 6, Germany’s solar photovoltaic systems generated a record 24.24 GW. The real peak came three days later, when they provided 50.6% of the nation’s electricity, which shows solar technology’s potential. The current reality is that solar contributed only 6% of the nation’s electricity during the first five months of 2014, but this will change.
energy  renewables  germany 
june 2014 by juliusbeezer
15-Second Ultrafast Charging For | CleanTechnica
TOSA, or Trolleybus Optimisation Système Alimentation, is a pilot project that launched in Geneva that recharges itself every few stops at special stations. Developed by ABB, the purpose of the pilot project is to uncover the most efficient and least costly way to adapt mass transit to vehicle electrification. ABB is also working on software to help cities determine the optimal bus routes and locations for the quick-charge stations, which pop out of the bus’s roof and attach to a special charger. The potential for this electric bus to save many metro authorities big bucks can’t be understated.

The quick-charge system is enough to get the 133-passenger bus through a few stops, and Geneva anticipates adopting the system as part of its full-time transit system by 2017. While other bus companies are focused driving far on as few recharges as possible, the high cost of the big batteries may make them too costly for some smaller cities. But the TOSA can have a smaller battery thanks to the quick charge system, keeping costs down, without adding unnecessary downtime for charging.
transport  antiscrape  archiving  alternatif  renewables 
june 2014 by juliusbeezer
A Simple Solution To The Complex Problem Of Offshore Wind Costs?
Even though offshore wind has been concentrated in Northern Europe so far, Windcat is bullish on the prospects for American projects to come online in coming years. The company has formed a partnership with U.S.-based Seacor Marine, which traditionally operates in oil and gas maintenance, to comply with U.S. regulations and be involved in American offshore wind projects from the start.
renewables  energy 
june 2014 by juliusbeezer
Intelligence: How Siemens overtook Vestas to become offshore no.1 | Windpower Offshore
Vestas was clearly dominant in terms of the capacity of new turbines going online in the early 2000s, but a number of factors came into play that boosted Siemens' market share and dented that of Vestas.
Another tipping point came with Vestas' gearbox issues with its own V90 turbine. Despite the introduction of the V112, Vestas has more V90s installed than any other turbine. In 2007, Vestas pulled the turbine from the market following problems with the planet bearing
energy  renewables 
june 2014 by juliusbeezer
Buffett's $28 billion winning bet on clean energy
Transmission operators across the US are struggling to manage record volumes of variable resources such as wind and solar coming online to meet state renewables mandates. Power prices, already weighed down by a 66 per cent drop in natural gas since July 2008, can slide to zero or negative at times when output unexpectedly surges, pressuring profits for gas, nuclear and coal generators.

California has a goal of securing 33 per cent of power from clean energy by 2020. By next year, the California Independent System Operator Corp. expects renewables to meet almost a quarter of demand. In the Northwest, renewables are nearly 7 per cent of total supply, excluding hydropower.

The market, scheduled to start Oct. 1 pending approval from the Federal Energy Regulatory Commission, would use hourly bids from generators to match the cheapest resources with supply, demand and transmission changes every five minutes.
energy  renewables 
june 2014 by juliusbeezer
L'usine Alstom d'éoliennes va détruire une zone humide - Reporterre
Controverse sur site d'usines Alstom
Débutés en janvier 2013 sur une emprise de quatorze hectares, la construction de l’usine Alstom doit s’achever cet été. Pour la faire fonctionner, il faut donc que soit déplacé le terminal qui gêne. Et celui-ci ira donc, ainsi en ont décidé les ingénieurs du port, sur la vasière de Méan, au plus près de l’actuel terminal, mais de l’autre côté du pont.
energy  renewables 
may 2014 by juliusbeezer
Wind and reliability: baseload power
Reliable and cost-effective operation of the electric grid requires a mixture of three types of resources: energy (electricity), capacity (ability to generate electricity at a certain point in time), and flexibility (ability to "turn up" or "turn down" electricity generation as needed). Each of the various types of power plants that generate electricity – nuclear, coal, gas, hydroelectric, wind and others – may specialize in providing one or two of these attributes, but no power plant excels at providing all three.
energy  renewables 
may 2014 by juliusbeezer
Report: How can you build lots of renewables and keep the lights on without spending too much money? | Greenpeace UK
An analysis by consultants Energynautics for Greenpeace based on European weather information for 2011 and data from the International Energy Agency (IEA) suggests it is possible to get 77% of Europe’s electricity from renewable sources by 2030; through smart grids, demand management, gas backup and big changes in how our power grid works.
Unlike gas, which can be turned on and off quite quickly coal and nuclear plants can be ramped up and down by a certain amount (it varies but often around 20%) but it’s hard to turn them on and off.

Indeed that’s why when EDF made a deal with the UK government to build a new nuclear plant it included protections against ‘curtailment’’ if, for example, there was too much wind.

Even if - as planned - Germany develops lots of renewable energy it would find itself sandwiched between countries with high levels of inflexible power generation. That means it wouldn’t be able to export power on windy days and would instead face be forced to curtail 9.8% of its renewable generation.
may 2014 by juliusbeezer
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