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When you mention the words “renewable energy,” most people immediately think of wind and solar. Over the last decade, renewables in the United States (excluding hydropower) have more than tripled.
In 2009, renewables reached 53 gigawatts of installed capacity. Renewables have grown at a compound annual growth rate of 14 percent since 2000.
It’s no big secret that wind and solar are the fastest-growing renewable sectors. In 2009 alone, wind installations here grew by 39 percent and solar PW grew by nearly 52 percent.
Even with these heady growth figures, renewables represent a very small percentage of our overall installed electrical generation capacity: about 4.7 percent as of the end of 2009.
The renewable that’s garnered the least amount of attention in America’s three-year push to renewables is geothermal energy. In stark contrast to the growth figures for solar and wind, geothermal has grown a mere 1.2 percent annually from 2000 to 2009.
In spite of those dismal growth figures, the United States leads the world in geothermal installed capacity at about 15.2 GW as of the end of 2009. Most of that is installed in California.
Continue reading: Geothermal Power
The huge potential benefits of a new electricity grid under the Irish Sea connecting power sources on Scottish, Northern Ireland and Republic of Ireland electricity networks have been highlighted in an exhaustive study published today.The Irish-Scottish Links on Energy Study (ISLES) study, funded by the EU’s INTERREG IVA Programme, has found that development of an interconnected transmission network within the decade would help drive further growth in the renewables sector, create jobs, generate revenues and ensure future sustainable energy supplies by better connecting and exporting electricity.
Read more: Offshore Renewable Energy Grid
Everybody wants to do their bit for the environment and the tech savvy have been given some great opportunities to do so by an innovative range of apps and gadgets. From new ways to recharge to information rich apps, tech heads can now purchase or download the environmentally conscious and eco-friendly technical advancements that will help to save our planet. Here are some must-have examples.
Continue reading: Latest Tech
With the ever increasing environmental awareness, people nowadays are looking for different ways to cut down their ecological footprints. One great way to go green is by opting for eco friendly gadgets, and the market is filled with a range of options. There has been a continuous rise in the development of green gadgets powered by kinetic, solar and wind energy for the last few years. Let’s take a look at some of the innovative creations that exploit the power of the wind. Hit the jump to see the five gadgets that run on wind energy.
Read more: 5 Innovative Gadgets
The Johnson family‘s hybrid solar-wind generator, one of about 200 distributed energy systems installed on the Navajo Reservation where about 18,000 people don’t have electricity service.
(Credit: Martin LaMonica/CNET)
NAVAJO RESERVATION, N.M.–Power transmission lines run a few hundred yards behind the Johnson family home here, but it took an off-grid solar and wind generator to finally bring them electricity service.
The Johnsons, who live on a remote stretch of land on the Navajo Reservation west of Farmington, N.M., are among about 200 families on the Navajo Reservation who rent an off-grid renewable-energy system from the rural utility. They opened their home to visitors last week during a fellowship organized by Institutes for Journalism & Natural Resources.
The hybrid power generator, which was installed in February, combines an eight-panel solar array, small wind turbine, and battery, all contained in a single unit on a shipping skid. It outputs alternating current to the one-story house next door, allowing the family to enjoy modern conveniences many of us take for granted, including a refrigerator, microwave, TV, and electric lights.
Read more: Hybrid Solar-Wind Power