Renewables’ share of U.S. energy consumption has now doubled since 2008, as coal’s share crashed in the same period from 48% to 30%. And while the Trump administration has signaled a desire to cut funding for renewable energy and efficiency programs, the trends seem set to continue thanks to market forces.
Back in January, the Edison Electric Institute — the (typically stodgy and backward-looking) trade group of U.S. investor-owned utilities — released a report [PDF] that, as far as I can tell, went almost entirely without notice in the press. That’s a shame. It is one of the most prescient and brutally frank things I’ve ever read about the power sector. It is a rare thing to hear an industry tell the tale of its own incipient obsolescence.
Net Metering Net Metering refers to the practice of allowing utility customers to interconnect PV (solar PV systems allow utility customers to run their electric meters backwards, offsetting their normal utility bill. Net Metering laws vary by country and by state.
Although not permitted under the US National Electric Code, it is technically possible to have a “plug and play” PV microinverter. A recent review article found that careful system design would enable such systems to meet all technical, though not all safety requirements. There are several companies selling plug and play solar systems available on the web, but there is a concern that if people install their own it will reduce the enormous employment advantage solar has over fossil fuels.
Ultra lightweight and portable, weather-resistant solar panel enables you to charge handheld USB/12V gear directly from the sun. Use a Goal Zero portable power pack and store power for your gear day or night.
Renewable energy has the potential to reduce pollution, slow global warming, create new industries and jobs, and move America toward a cleaner, healthier energy future. But renewable energy is not without its challenges and impacts.
In Britain, 14 more cities and towns had signed up to the UK100 local government network’s target of 100% clean energy by 2050, bringing the total to 84. Among the recent local authority recruits were Liverpool City Region, Barking and Dagenham, Bristol, Bury, Peterborough, Redcar and Cleveland.
Because no one can be sure when clouds might block sunshine during the day, fossil fuel electricity is needed to fill the gaps. Utility officials note that solar production is often cut back first because starting and stopping natural gas plants is costlier and more difficult than shutting down solar panels.
Every hour, more energy from sunlight strikes the earth than the entire human population uses in a whole year. The sun’s heat and light provide an abundant source of energy that can be harnessed in many ways. There are a variety of technologies that have been developed to take advantage of solar energy. These include concentrating solar power systems, passive solar heating and daylighting, photovoltaic systems to generate electricity, solar hot water, and solar process heat and space heating and cooling. The Division of Energy supports solar energy projects that promote the broader use and application of solar technologies in the Commonwealth.
We have proved the commercial profit of sun power in the tropics and have more particularly proved that after our stores of oil and coal are exhausted the human race can receive unlimited power from the rays of the sun.
The state’s three big shareholder-owned utilities now count themselves among the biggest solar power producers. Southern California Edison produces or buys more than renewable energy of its electricity from solar generators, Pacific Gas & Electric 13% and San Diego Gas & Electric 22%.
For either photovoltaic or thermal systems, one option is to loft them into space, particularly Geosynchronous orbit. To be competitive with Earth-based solar power systems, the specific mass (kg/kW) times the cost to loft mass plus the cost of the parts needs to be $2400 or less. I.e., for a parts cost plus rectenna of $1100/kW, the product of the $/kg and kg/kW must be $1300/kW or less. Thus for 6.5 kg/kW, the transport cost cannot exceed $200/kg. While that will require a 100 to one reduction, SpaceX is targeting a ten to one reduction, Reaction Engines may make a 100 to one reduction possible.
We design and sell solar panel systems for projects large and small, for homeowners and do-it-yourselfers, contractors, installers, electricians, and developers. Call one of our experienced solar design techs to talk about your project at 1-800-472-1142. If you have your most recent electric bill handy, we’ll be able to get started with the design process right away.
In 2010, the United States led the world in geothermal electricity production with 3,086 MW of installed capacity from 77 power plants; the largest group of geothermal power plants in the world is located at The Geysers, a geothermal field in California. The Philippines follows the US as the second highest producer of geothermal power in the world, with 1,904 MW of capacity online; geothermal power makes up approximately 18% of the country’s electricity generation.