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Alternative Energy eMagazine - | AltEnergyMag
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A robust transmission system is the cornerstone for large-scale integration of wind power in the United States. Therefore, perhaps the greatest barrier to achieving this goal is building new transmission to connect the large amounts of location-constrained wind resources to the load centers. Another goal-limiting factor is the lack of appropriate market rules across the various interconnections in the US. Furthermore any reversal of policy decisions made at Federal and State levels (e.g. Renewable Portfolio Standards) in support of renewable energy could send the wrong signal to the industry causing uncertainty in the markets, potentially stalling the investments in new wind plants. The reality is that there are five election cycles between now and 2030 so it is important that wind energy related policies are sustained during this period.Other potential barriers to achieving this 20-by-2030 goal include: a surge in the global demand for wind energy which could limit the supply of turbines in the US; another financial crisis during the next two decades which affects the credit and investment markets; and lastly the lack of skilled work force to operate power systems with high penetration of variable generation.
Renewable Energy Focus - Six renewable energy sources judged to be best prospect for future, says report
"The best prospects for large-scale renewable energy production and net-energy performance remain wind and certain forms of solar, according to a study released by two California-based think tanks.
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Smart Grid: Where Do We Grow From Here? | GreenBiz.com
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With the $4.5
billion in government stimulus funding acting as a catalyst, we've moved the
discussion from planning to delivery, and we're seeing growing excitement around
significant progress.
Rendement de 23,4% pour une cellule solaire < Technologie - Enerzine.com
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Des chercheurs de la branche ISE de l'Institut Fraunhofer ont obtenu un taux de rendement de 23,4% pour une cellule solaire monocristalline en silicium composée d'une couche mince semi-conductrice de type-p sur un substrat semi-conducteur
STUDY: U.S. subsidises fossil fuels 2.5 times more than renewables — Autoblog Green
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According to a new study that reviewed fossil fuel and energy subsidies for Fiscal Years 2002-2008 was just released by the Environmental Law Institute and discovered that the U.S. spends about two-and-a-half times as much on fossil fuels (mostly aiding foreign oil production) than it does on renewable energy.
Mining Hydrothermal Vents For Renewable Electricity, Drinking Water
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The Marshall Hydrothermal Recovery System would use the heat from hydrothermal vents 7,000 feet under the sea to make electricity. Its temperature is incredibly high, hot enough to melt lead, but it does not boil because of the intense pressures at the depths where the vents are located.
Superheated fluid would be propelled up through a through a (well insulated!) pipe to an oil platform located on the surface above the vent. The superheated fluid is carried by means of flow velocity, convection, conduction, and flash steam pressure as it rises and the ambient pressure is decreased.
HOMER Energy - Hybrid Renewable & Distributed Power Design Support
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Smaller scale distributed and renewable power projects will become
the fastest growing segment of the energy industry. Due to the large
number of relatively small projects many more people are becoming
involved with project development who are not power industry
professionals. HOMER Energy provides software, services, and an
on-line community to this wider and more diverse group of people
who will be making this vision a reality.
The Oil Drum | Renewable Fuel Pretenders
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One thing that probably goes without saying. Most pretenders don't believe they are pretenders. They are often completely sincere people who believe they have cracked the code, and thus they take exception to my characterization. The cellulosic guys, the algae guys, and even the hydrogen guys will insist that I have it all wrong. In fact, following the posting of this essay on my blog, I heard from all of them. I got numerous e-mails assuring me that they really had come up with the solution. What I have discovered in many of these cases is that people often believe this because they have no experience at scaling up technologies. They might have something that works in the lab, but this can instill a false sense of confidence in those who have never scaled a process up.
European Academies Science Advisory Council - Transforming Europes Electricity Supply - full report
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The study concludes that developments are required in
planning a European grid to ensure that investments are made in
the right places, in the way the grid is operated so that
maximum benefi t is extracted from a given infrastructure, and
in transmission technologies so that effective options are
available for environmental, operational, energy efficiency and
investment considerations. Specific recommendations are made in
each of these areas.
A ‘Reverse Auction Market’ Proposed to Spur California Renewables - Green Inc. Blog - NYTimes.com
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This “reverse auction market” feed-in tariff is designed to avoid the pitfalls the have plagued efforts in Europe to encourage development of renewable energy by paying artificially high rates for electricity produced by solar power plants or rooftop photovoltaic projects.
Calif. transmission plan looks to connect renewable energy-rich areas | CivSource
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The state of California is trying to find ways to carry its abundance of renewable energy from areas that have it to areas that do not. Last week, the Renewable Energy Transmission Initiative (RETI) released Phase 2 of its conceptual transmission plan, designed to develop a renewable energy infrastructure.
The Energy Credit Card – making solar energy & energy efficiency affordable
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What is the Energy Credit Card?
- It's a regular credit card that is credited by your
local utility with real green rewards
- It's just as easy and convenient to use.
- It can replace the card(s) you have now.
- Good anywhere credit cards are accepted.
- It can help reduce your credit card debt
Kenya to build Africa's biggest windfarm as rains fail and hydropower falters | Environment | guardian.co.uk
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Some 365 giant wind turbines are to be installed in desert around Lake Turkana in northern Kenya – used as a backdrop for the film The Constant Gardener – creating the biggest windfarm on the continent. When complete in 2012, the £533m project will have a capacity of 300MW, a quarter of Kenya's current installed power and one of the highest proportions of wind energy to be fed in a national grid anywhere in the world.
EUROPA - Press Releases - Commission adopts template for National Renewable Energy Action Plans
"The Commission adopted today a decision establishing a template for National Renewable Energy Action Plans (NREAPs) as required by the recent Renewable Energy Directive 1 . The template will guide Member States in the elaboration of their Renewable Energy Action Plan and detail their strategies for reaching their 2020 renewable energy targets. Each Member State must submit a NREAP to the Commission by 30 June 2010 at the latest."
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The Commission adopted today a decision establishing a template for National Renewable Energy Action Plans (NREAPs) as required by the recent Renewable Energy Directive 1 . The template will guide Member States in the elaboration of their Renewable Energy Action Plan and detail their strategies for reaching their 2020 renewable energy targets. Each Member State must submit a NREAP to the Commission by 30 June 2010 at the latest.
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The Commission adopted today a decision establishing a template for National Renewable Energy Action Plans (NREAPs) as required by the recent Renewable Energy Directive 1 . The template will guide Member States in the elaboration of their Renewable Energy Action Plan and detail their strategies for reaching their 2020 renewable energy targets. Each Member State must submit a NREAP to the Commission by 30 June 2010 at the latest.
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Virtual power plants could tame coming grid chaos - tech - 11 June 2009 - New Scientist
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Fears over energy security and climate change have led to record investment in renewable energy. But a major problem threatens to stall progress towards a more sustainable future: national electricity grids are far from ready to cope with the variable output from the new technologies.
A solution might be at hand, though, and would not involve radical changes to the existing infrastructure. Treating groups of dispersed power sources, such as solar and wind generators, as a single entity could solve the problem, creating the virtual equivalent of a single large power station.
Wind Turbine Output Boosted 30% by Breakthrough Design : CleanTechnica
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Technological advancements in wind energy efficiency have generally come incrementally and usually made via a process of increasingly large wind turbine blades. Put simply, the model has been: longer blades = more output per turbine.
The Oil Drum | A North American Energy Plan for 2030: Hydro-electricity the forgotten renewable energy resource
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Hydro energy’s potential may be overlooked because; it is “old” renewable energy, or because like nuclear energy, some hydro electric schemes have been criticized by environmental groups, but most importantly a perception by many, that most hydro electric potential in North America has already been exploited. Hydro electricity deserves more scrutiny because;
1) North America has significant undeveloped potential,
2) the technology is well understood, although technical improvements continue to be made, especially for low head and small hydro,
3) hydro has a very high energy return on energy investment (ERoEI),
4) additional hydro can enable more wind and solar energy capacity to be absorbed by the grid,
5) hydro potential is more geographically dispersed than wind and solar, and finally,
6) the cost of developing additional hydro capacity is moderately low and has very low technical and financial risk.
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