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Solar Power

Solar Power Making Its Way to Prisons


When we think of all the businesses and institutions that we'd like to see embrace renewable energy, prisons don't immediately pop to mind, but huge correctional facilities require a lot of electricity to run and the large flat spaces they most often occupy make them perfect for solar power.

Most recently, two Illinois correctional facilities in Merced County have announced that they'll be running on solar power.  Two arrays consisting of 6,272 solar panels located on land adjacent to the two facilities have a capacity of 1.4 MW and will be able to provide 70 percent of the facilities' peak electricity consumption and all of the power during off-peak times.

The arrays plus new energy-efficient lighting systems being installed will reduce CO2 emissions by 999.85 tons.  The cost savings will be substantial too.  The county expects to save $300,000 a year on energy costs creating a positive cash flow that could total $9 million in 25 years.

Four California correctional facilities announced in October that they'd be installing solar arrays as well.  All put together the four arrays will have a capacity of 25 MW and save taxpayers $57 million over 20 years.

via Care 2

 

Warren Buffett's Utility Buying 550 MW Solar Farm


MidAmerican Energy, a utility owned by Warren Buffett's company Berkshire Hathaway, is purchasing a large solar farm in California.  The 550-MW Topaz Solar Farm is being sold by First Solar for an as-yet-unknown price, though construction costs are estimated at about $2 billion.

The solar farm, located in the Carrizo Plain, is currently under construction and should be up and running by 2014.  It will use First Solar's thin-film technology and generate enough electricity to power 160,000 homes.

The Topaz solar farm is MidAmerican Energy's first solar energy purchase, but the utility has already been big on wind, ranking as the #1 utility in America for wind power by controlling 2,909 MW of capacity.

via Treehugger

 

Renewable Energy Projects Around the World: How Much is Installed and Where


The Economist has put together a nice graphic using data from Enel showing exactly how many gigawatts of each type of renewable energy were installed as of 2010 and where that power was located. As of the end of last year, the world had a total of 1,313 GW of installed renewable energy projects.

As of 2010, hydropower was still the global leader of renewable energy sources with 1,005 GW installed, but that could change in the coming years.  Hydropower only increased in installed power by 3 percent from 2009, but solar power had the biggest year over year increase with a jump of 70 percent from 2009 to 40 GW.

Wind power also added a nice 24 percent in installed capacity from 2009 to 2010 and comes in second place globally, albeit a pretty distant second.  If those trends continue, solar and wind power could catch up in the near future.

The greatest concentration of renewable energy projects are located in Europe, which accounts for 433 of the 1,313 GW.  Asia is a close second with 420 GW and will likely eclipse Europe soon.  Asia had the biggest growth in renewable energy installations with a 30 percent increase from 2009.

North America had 251 GW of renewable energy projects installed at the end of 2010.

via The Economist

 

California Hits 1 Gigawatt of Rooftop Solar


According to a new report by Environment California, a major solar power milestone has been reached in the state:  it is now home to 1 gigawatt's-worth of rooftop solar power.  To put that into perspective, only five countries have hit the 1 GW mark in solar power so far:  Germany, Spain, Japan, Italy and the Czech Republic.

The electricity produced by rooftop solar power installations in California now equals two coal-fired power plants and could power 750,000 homes.

The solar installations include new and existing homes and commercial buildings, and panels connected to the grid by both large utilities and smaller municipal utilities.

The report gives most of the credit to a statewide rooftop solar incentive program called the California Solar Initiative.  The initiative is responsible for 600 MW of installed solar power in the state.

via Mercury News

 

Facebook Adding Solar Power to New Headquarters


Facebook, a company that so far hasn't done much in the "green" arena, is incorporating a nice-sized solar power system into their new headquarters.

The cogeneration system, which is being built by Cogenra Solar, will include both solar PV and solar hot water heating and have far greater efficiency than just a solar PV system alone.  The 24-module system will reside on the roof of a 10,000 square foot fitness center, providing electricity for the fitness machines and hot water for the showers.  The system will have a capacity of 10 kW of electricity and about 50 kW of thermal energy.

Facebook sees this as their initial investment in solar power and hopes to expand the system later on to include powering and heating other parts of the campus, like the cafes.

via Crisp Green

 
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