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EDF Renewable Energy Asset Management Group recognizes the management of physical assets is key to long-term operational performance and delivers the expertise that owners need to make value-driven decisions to optimize the lifecycle performance and profitability of a project.

Feb. 1, 2016 — An expert argues that investment in renewable electricity now outstrips that in fossil fuels, and that increasing numbers of policies to improve the efficiency of energy use and to make energy … read more

The array of a photovoltaic power system, or PV system, produces direct current (DC) power which fluctuates with the sunlight’s intensity. For practical use this usually requires conversion to certain desired voltages or alternating current (AC), through the use of inverters.[3] Multiple solar cells are connected inside modules. Modules are wired together to form arrays, then tied to an inverter, which produces power at the desired voltage, and for AC, the desired frequency/phase.[3]

Rugged and Modular Detachable kickstand provides optimum angle placement, natural shade for charging devices and a vented pocket for temperature regulation. Weatherproof layering easily sloughs rain and snow.

Because of its parabolic shape, a trough can focus the sunlight from 30 times to 100 times its normal intensity (concentration ratio) on the receiver pipe, located along the focal line of the trough, achieving operating temperatures higher than 750°F.

The United States has some of the largest solar farms in the world. Solar Star is a 579 megawatt (MWAC) farm near Rosamond, California. Completed in June 2015, it uses 1.7 million solar panels, spread over 13 square kilometres (5.0 sq mi).[42][43][44] The Desert Sunlight Solar Farm is a 550 MW solar power plant in Riverside County, California, that uses thin-film solar photovoltaic modules made by First Solar.[8] The Topaz Solar Farm is a 550 MW photovoltaic power plant, in San Luis Obispo County, California.[9] The Blythe Solar Power Project is a 485 MW photovoltaic station planned for Riverside County, California.

Module electrical connections are made in series to achieve a desired output voltage or in parallel to provide a desired current capability. The conducting wires that take the current off the modules may contain silver, copper or other non-magnetic conductive transition metals. Bypass diodes may be incorporated used externally, in case of partial module shading, to maximize the output of module sections still illuminated.

Solar power plants convert sunlight into electricity, either directly using photovoltaics (PV), or indirectly using concentrated solar power (CSP). Concentrated solar power systems use lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam. Photovoltaics converts light into electric current using the photoelectric effect.[3]

In a way, this step should actually come first, but having a good understanding of how solar works will help you better figure out your bill. There are currently three ways homeowners can add solar arrays to their property. The first is by simply purchasing an array and having it installed. The second is by leasing a solar array from a company that installs and maintains it, and the third is through a Power Purchase Agreement. Each method has its own variables and there are many companies operating in the space, so it’s impossible to generalize about which solution is the best one for you.

Most cars on the road today in the United States can run on blends of up to 10% ethanol, and motor vehicle manufacturers already produce vehicles designed to run on much higher ethanol blends. Ford, DaimlerChrysler, and GM are among the automobile companies that sell “flexible-fuel” cars, trucks, and minivans that can use gasoline and ethanol blends ranging from pure gasoline up to 85% ethanol (E85). By mid-2006, there were approximately 6 million E85-compatible vehicles on the road.[60]

A 2010 survey conducted by Applied Materials shows that two-thirds of Americans believe solar technology should play a greater role in meeting the country’s energy needs. In addition, “three-quarters of Americans feel that increasing renewable energy and decreasing U.S. dependence on foreign oil are the country’s top energy priorities”. According to the survey, “67 percent of Americans would be willing to pay more for their monthly utility bill if their utility company increased its use of renewable energy”.[86]

Most customers I met had little interest in the fact that their power came from the sun, or that it was environmentally friendly. Since these communities weren’t using power previously, their solar panels fight climate change only in the sense that they decrease pressure to build power plants that consume fossil fuel. But some observers hope that the experience in Africa—which today has more off-the-grid solar homes than the U.S.—could help drive transformation elsewhere. Already, a few dozen American cities have pledged to become one-hundred-per-cent renewable. (Pittsburgh did so the day after Trump held up its theoretically beleaguered citizens as a reason for leaving the climate accord.) The U.S. has already sunk a fortune into building its electric grid, and it may seem far-fetched to think that users will disconnect from it entirely. But, as Helgesen told me, “As batteries get better, it’s going to be a lot more realistic for people to stop depending on their utility.” He thinks that, in an ideal world, technological change could lead to cultural change. “The average American has no concept of electrical constraint,” he said. “If we accept some modest restrictions on our power availability, we can go off-grid very quickly.”

Geothermal energy is produced by tapping into the thermal energy created and stored within the earth. It arises from the radioactive decay of an isotope of potassium and other elements found in the Earth’s crust.[132] Geothermal energy can be obtained by drilling into the ground, very similar to oil exploration, and then it is carried by a heat-transfer fluid (e.g. water, brine or steam).[132] Geothermal systems that are mainly dominated by water have the potential to provide greater benefits to the system and will generate more power.[133] Within these liquid-dominated systems, there are possible concerns of subsidence and contamination of ground-water resources. Therefore, protection of ground-water resources is necessary in these systems. This means that careful reservoir production and engineering is necessary in liquid-dominated geothermal reservoir systems.[133] Geothermal energy is considered sustainable because that thermal energy is constantly replenished.[134] However, the science of geothermal energy generation is still young and developing economic viability. Several entities, such as the National Renewable Energy Laboratory[135] and Sandia National Laboratories[136] are conducting research toward the goal of establishing a proven science around geothermal energy. The International Centre for Geothermal Research (IGC), a German geosciences research organization, is largely focused on geothermal energy development research.[137]

Comments

  1. Molly Moran

    Solar power plants convert sunlight into electricity, either directly using photovoltaics (PV), or indirectly using concentrated solar power (CSP). Concentrated solar power systems use lenses or mirrors and tracking systems to focus a large area of sunlight into a small beam. Photovoltaics converts light into electric current using the photoelectric effect.[3]
    The California Solar Power Expo is an interactive event designed for solar, smart energy, and storage professionals who are working in and with the California solar market to make powerful business connections. The event will feature exhibitor-led interactive training for installers as well as networking opportunities.

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