Renewable electricity generation projections sensitive to cost, price, policy assumptions

This Issues in Focus article is intended to emphasize that there is a great deal of uncertainty related to factors such as policy, project costs, and natural gas prices—and that a shift in any of these factors could significantly change EIA's renewable projections, generally in the positive direction.

Rail-less Residential PV Mounting

By providing a pre-engineered kit that incorporates the all-in-one concept (fasteners, flashing, brackets and bonding plates, all from one source), Roof Tech products are easy to understand and can be standardized for any array configuration

Solar Energy - NRG Energy and MidAmerican Solar Complete Agua Caliente, the World's Largest Fully-Operational Solar Photovoltaic Facility

NRG Energy, Inc. (NYSE:NRG), through its wholly-owned subsidiary NRG Solar, along with partner MidAmerican Solar announced they have achieved substantial completion at their Agua Caliente Solar Photovoltaic Facility, a 290 megawatt (MW) photovoltaic facility located on 2,400 acres of land between Yuma and Phoenix, Ariz. The electricity that is generated by the station, which can support 230,000 homes at peak capacity, is being sold to Pacific Gas & Electric Company (PG&E) under a 25-year power purchase agreement. “Large-scale utility accomplishments, like our Agua Caliente project, raise the bar in terms of our clean-energy technology and production,” said Tom Doyle, president, NRG Solar. “Proving that we can build both the world’s largest solar thermal and now one of the world’s largest solar photovoltaic facilities advance NRG’s mission to reshape the energy landscape that is incredibly beneficial to both the economy and in how we produce and consume energy. Whether it’s partnering, developing or investing, NRG will lead the way in providing a diverse set of solutions and technologies to get the US to the ultimate goal of providing affordable, reliable clean energy for everyone.”

Japan's 25-year plan to put a gigawatt solar power farm in space

Scientists from the Japan Aerospace Exploration Agency (JAXA) have planned a series of pilot projects which, if successful, should culminate in a 1-gigawatt space-based solar power generator within just 25 years. Its energy output would be on par with some of the largest modern conventional power plants, thanks to fact that it’s above the atmosphere, which reflects or absorbs most solar energy that falls on Earth. Collecting solar power above the atmosphere means you could have access to almost 150% of surface amounts — and if we can find a way of beaming that power back down to Earth, our reliance on every other form of energy would vanish overnight.   Here at ExtremeTech, we publish a fair number of articles about improvements to solar power. That makes sense since, until fusion power comes of age, solar will remain the only green technology that could even theoretically provide for our global power demands. The sun blasts our planet with so much power that the world’s deserts absorb more energy in a single day than the human race uses in a year. Yes, Earth’s surface is a phenomenal place to collect solar energy — but astronomers know about somewhere even better.   Full Article:

Solar Power Grows 400 Percent in Only 4 Years

Driven by an explosion in photovoltaics, the U.S. solar sector has emerged "from a relatively small contributor to the nation's total electric capacity into a one of comparative significance," the Energy Information Administration reported this week in its latest Electricity Monthly Update.   Since 2010, EIA said, U.S. solar capacity increased 418 percent from 2,326 megawatts, accounting for 0.2 percent of total U.S. electric generation, to today's 12,057 MW, or 1.13 percent of U.S. generation.   More than half of that additional capacity — 5,251 MW -- has been installed by home and business owners participating in utility net metering programs that allow owners of solar systems to sell excess capacity back to their local utility at retail rates, according to EIA.   California has the largest net metered solar capacity, with 38 percent of the U.S. total, but Eastern states such as Massachusetts and New Jersey also have significant amounts of net metered solar energy, the agency said.   Utility-scale PV applications, defined as systems with 1 MW or more of capacity, have also expanded significantly and currently account for 5,564 MW, according to EIA. Such systems generally are designed to generate power for wholesale markets.  

11 innovative companies giving energy storage a jolt

Technological and market forces have converged to make energy storage one of the most exciting — and potentially game-changing — opportunities for commercial and industrial facility managers, grid operators, homeowners and investors. Forward-thinking utilities, battery suppliers, power inverter producers, system integrators and public-sector supporters are driving a massive expansion of energy storage solutions aimed at enabling the grid of the future — or even a grid-less future. Although the energy storage value chain includes hundreds — if not thousands — of players, the following are leading the charge.  Full Article: Here are 11 innovative companies giving energy storage a jolt: 1. Aquion Energy: A cleaner chemistry 2. General Electric: A storage giant awakens 3. Green Charge Networks: Power efficiency 4. LG Chem: Leading lithium-ion battery maker 5. NEC Corporation: Global grid-scale storage 6. NRG Energy: From V2G to 'post-grid future' 7. Princeton Power: Grid-tied storage 8. Solar Grid Storage: A match made in the heavens 9 and 10. SolarCity and Tesla: A dynamic duo 11. Sonnenbatterie: From Europe with love  

A blow to corn-based biofuels

Biofuels made from the leftovers of harvested corn plants are worse than gasoline for global warming in the short term, a study shows, challenging the Obama administration's conclusions that they are a much cleaner oil alternative and will help combat climate change. A $500,000 study paid for by the federal government and published Sunday in the peer-reviewed journal Nature Climate Change concludes that biofuels made with corn residue release 7% more greenhouse gases in the early years compared with conventional gasoline. Biofuels are better in the long run, but the study says they won't meet a standard set in a 2007 energy law to qualify as renewable fuel. The conclusions deal a blow to what are known as cellulosic biofuels, which have received more than a billion dollars in federal support but have struggled to meet volume targets mandated by law. About half of the initial market in cellulosics is expected to be derived from corn residue. The biofuel industry and administration officials called the research flawed. They said that it was too simplistic in its analysis of carbon loss from soil, which can vary over a single field, and that it vastly overestimated how much residue farmers would remove once the market gets underway.

Obama to challenge private companies to boost solar power use

President Obama will challenge companies Thursday to expand their use of solar power, part of his ongoing effort to leverage the power of his office to achieve goals that have been stymied by Congress. The new initiative comes as the White House is hosting a Solar Summit aimed at highlighting successful efforts on the local level to speed the deployment of solar energy.   Although some large solar plants are coming online and it is the fastest-growing source of renewable energy in the United States, according to the U.S. Energy Information Administration, it accounts for roughly 1 percent of the nation’s electricity generation.   “Now is the time for solar,” said Anya Schoolman, executive director of the Community Power Network, a Washington-based nonprofit group that helps communities build renewable energy projects. She will be honored at the summit Thursday.   “The costs are affordable, in reach of middle America and above. We know how to do it now, we know how to scale it, and we kind of just need people to let it go and encourage it,” she said.   In an effort to make it easier for state, local and tribal governments to expand their solar portfolios, the Energy Department is launching a $15 million-dollar “Solar Market Pathways” program.  

Global Wind Power Capacity Projected To Nearly Double In 5 Years

Asia is now leagues ahead of other regions within the global wind market. Furthermore, this market is expected to grow at an annual cumulative capacity rate of more than 10 percent over the coming five years. A recent Global Wind Energy Council (GWEC) report shows other significant wind energy markets of the past few years have slowed in comparison. However, overall global growth of wind energy will remain firm with a hopeful measure of expanding growth again. The wind market for 2013 was an “off” year. Less wind energy capacity was installed in 2013 than in 2012. This disappointment saw the biggest drop in the market’s relatively short life. From 1996 through 2013, annual installed capacity for wind grew at an average rate of more than 20 percent.

CA Lottery Hits Jackpot with Solar and Ice-based Energy Storage

The Pavilion of CA Lottery Uses Ice Storage and Solar Panels to Achieve Net Zero.

Developing Renewable Energy Projects on Brownfields: Mitigating Environmental Risks & Liabilities

Although the environmental risks and liabilities associated with brownfields generally diminishes their viability as locations for such facilities, these risks and liabilities can often be sufficiently controlled and minimized through governmental and private party tools to make certain projects worth pursuing.

Half of power plant capacity additions in 2013 came from natural gas

But Solar came second - twice as much as coal - and Wind was 4th (comment from AltEnergyMag)

Why Oil Industry Estimates for Energy Reserves Can Be an X-File

Hopefully, we won't have to deal constantly with misinformation like Mulder and Scully had to when jousting with their malevolent arch-nemesis, the Cigarette Smoking Man. However, be prepared to do some digging to get at the facts.

Distributed Generations Future Impact on the U.S. Capacity Markets

As variable, distributed generation increasingly becomes a prevalent source of generation in regions, changes in capacity market dynamics will have a profound impact on generating assets and their future economic viability.

Solar Tracking Technology

The demand for trackers has expanded significantly in recent years as more reliable and cost-effective solutions come to market. According to a recent study by Transparency Market Research, the global installed capacity for solar trackers is estimated to reach almost 9 GW by 2020.

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