Showing posts with label Solar Energy. Show all posts
Showing posts with label Solar Energy. Show all posts

Sunday, March 8, 2009

First Organic Distributor in US Gets Solar System




"Veritable Vegetable, a San Francisco-based company that has distributed organic produce since 1974, has just gotten an upgrade that will promote its sustainable agenda even further: it's had a 560-panel, 106 kilowatt solar electric system installed on top of its main warehouse in the city. And it's poised to help make one of the first green voices in the American business community even greener.



"Along with supplying a steady stream of renewable electricity, the solar system will have the added benefit of saving the company around $60,000 a year. Which means the system should pay for itself in 5 years, and supply free electricity for at least an additional 25—good news for Veritable's bottom line." Oldest Organic Produce Company in the US Gets a Solar-Powered Upgrade

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Sunday, March 1, 2009

Large Scale Energy Stability & Costs: Solar, Wind, Nuclear




"Due to the larger magnitude of solar PV power output fluctuations relative to those of wind at time scales shorter than approximately 31⁄2 hours, the costs of large scale solar PV integration are likely to be larger than those of wind." Carnegie Mellon Study: Large Scale Solar vs. Large Scale Wind Power



"Solar Electric Energy demand has grown consistently by 20-25% per annum over the past 20 years. This has been against a backdrop of rapidly declining costs and prices.

"This decline has been driven by a) increasing efficiency of solar cells b) manufacturing technology improvements, and c) economies of scale. The photovoltaic solar industry now globally generates around $10bn revenues. This includes the sale of solar modules, its associated equipment and the installation of those systems. In 2001, just under 350 Megawatts of solar equipment were sold to add to the solar equipment already generating clean energy." Solar Energy Industry Statistics: Growth



"For nuclear power, the modernization is intended to produce dramatic differences: plants that will run more than 90 percent of the hours in a year and last for 60 years or longer. The ones in service today ran only about 60 percent of the time when they were new and were assumed to have only a 40-year life. But utilities are already signing long-term contracts for large solar generators, and wind turbines are being erected at an unprecedented rate. Those alternatives operate fewer hours of the year, but with no burden of fuel cost or fuel-disposal problems the price of power they produce could be low enough to squeeze nuclear power out of the mix." Can Nuclear Compete? - Scientific American

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Saturday, February 28, 2009

Solar Photovoltaics - Installations Growing Rapidly




From MIT's Department of Electrical Engineering and Computer Science:

"Solar photovoltaic power generators, also known as solar cells, convert sunlight directly into electricity. The installation of solar cells is growing rapidly (30% per year) and solar cells are projected to become an increasingly significant source of energy for our society. Because of the vast quantity of energy available from the sun, solar energy has the potential to scale to meet our entire energy demands." Solar photovoltaics

The graph above enlarged here charts:

-- Installed Solar
-- World Electricity Capacity
-- Primary Energy Consumption

The above link found while Googling "microenergy" - 22,700,000 results - haven't navigated all those links o.c. - wondering if this level of Google results might be any cause for optimism on the energy front.

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