How do you calculate the annual output from a photovoltaic array?
As an example:
If you had 30m2 of photovoltaic panels, mounted at 0 degrees inclination in London, UK, what would the annual output be in kWh?
Specs for the PVs: 1 kWp, 8m2 per kWp.
You will never be able to calculate this precisely There are too many variables. For instance:
The efficiency of the panels, their rated output, whatever degree of fogginess hading there might be, the amount of shading, how often the panels are cleaned, the efficiency of the inverters, and whether you have batteries.
Perhaps you can find insolation (this is spelled correctly) tables on the Internet. Knock off 15 or 20 percent of that figure, and you will be as close as you can guess it.
Also look on the Internet and in the search box near the top of this page to learn more to help you make solar decisions.
“Solar living“, “green” houses, “smart” appliances, “going green” – these aren’t just “the day’s” catchwords; these are all phrases used to describe a way of life. In the past decade or so however, they’ve also come to describe a way of working.
If you’re new in the field and looking for a career, or if you have a career but you’d like to increase your knowledge and skills base, you’re in luck. Your position doesn’t have to be high technology, like a PV Project Engineer. Thanks to the new federal incentives for solar energy, more than 440,000 jobs for installation and manufacturing will be opening up within the solar industry.
Even without the federal incentives, the need for people with solar training grows each year. Environmental groups argue against carbon pollution; homeowners looking for lower energy costs pay roofers with solar training to replace their old asphalt tiles with solar panels and PV arrays; companies and individuals who use solar energy receive tax credits. As the demand for products from the solar industry rise, so does the need for those who can develop, manufacture and install those products.
This remains true even through the current economic crisis; having a green job ensures job security in a shaky economic climate. Billions of dollars are being spent on solar photovoltaic cell manufacturing, installation and maintenance, green building and any number of energy efficient and sustainable energy methods. According to Greenpeace and the Worldwatch Institute, green jobs may be one of the keys to economic stabilization.
People in the construction industry, such as general contractors, are some of those that could take advantage of solar courses and certification. Most solar training for general contractors isn’t so much learning about new things, as learning a new way to do old things. For instance, a trained general contractor will ensure that new buildings meet the high performance standards necessary to receive Green certification.
In addition, retrofitting old buildings to become energy efficient adds jobs for solar trained workers, engineers, electricians and others. Retrofitting may actually turn into a more lucrative position than building, as there are more non-compliant buildings than there are Green certified buildings.
The lack of workers with solar training isn’t confined to one area:
Connecticut just created a $9 million fund for investments in starting companies focused on clean technology jobs.
Hawaii plans to stop using fossil fuels within the next ten years, moving to renewable, sustainable energy. An agreement to allow customers with solar panels to sell power back to the Hawaiian Electric Company was signed in November of this year, though not brought into law.
In Oregon, over 1,700 solar jobs are either available or opening since Gov. Ted Kulongoski began luring renewable energy jobs to the state.
Everywhere across America and the globe, solar jobs are opening up and people with solar education are needed. If you don’t have a field yet, or would like to expand your field, look into solar training. The opportunities are endless!
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This HQRP cable specifically designed for connecting photovoltaic system components inside and outside of building and equipment with high mechanical requirements and extreme weather conditions .For permanent installations. Cable made of electron-beam cross-linked insulation and coating; high resistance against heat , cold, oil, abrasion, ozone, UV and weather; with improved reaction in case of fi...
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Kung Fu is at risk of being gone forever! In an original story, players are plunged into the video game at the climatic end-of-movie battle between Master Shen and Po. Players must help Po, the furious five with the councel of respected masters, Shifu, Croc, and Ox defeat looting wolves, powerful gorillas and clans of barbaric komodo dragons lead by Xaio Dan to save Gongman City, restore balance, ...
HQRP Pair 144 inches (3.66m) 1x4mm² Photovoltaic Solar Array Cables with MC4 Connectors
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This HQRP cable specifically designed for connecting photovoltaic system components inside and outside of building and equipment with high mechanical requirements and extreme weather conditions .For permanent installations. Cable made of electron-beam cross-linked insulation and coating; high resistance against heat , cold, oil, abrasion, ozone, UV and weather; with improved reaction in case of fi...
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The Sunforce 50033 15-Watt Solar Charging Kit gives you several more reasons to love the sun. It provides the power you need, while helping you save money and protect the environment. This kit is ideal for cabins, recreational vehicles, remote power, back-up power, and 12-Volt battery charging. It comes with everything you need to start producing up to 15 Watts/125mA of clean, free power in all we...
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The Sunforce 60022 30 Amp Solar Charge Controller prevents overcharging of 12 Volt batteries. It is intended for use with 12 Volt solar panels, and can handle up to 30 amps of array current and up to 450 Watts of solar power. The 60022 will provide maintenance free protection of your solar panel and batteries. The controller will automatically indicate the charged condition of your battery on the ...
HQRP 20W Mono-crystalline Solar Panel 20 Watt 12 Volt in Anodized Aluminum Frame Square shape plus HQRP Coaster.
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Products trademarked HQRP® are marketed and sold exclusively by Osprey-Talon. HQRP 20 Watt (20W) Solar Electric Power Panel. The solar cells are encapsulated beneath high transmission tempered glass. The rear surface of the module is completely sealed from moisture and mechanical damage. Construction of the module minimizes weight while providing a durable, protective environment for the solar ce...
Power electronic interfaces for stand-alone photovoltaic systems.
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The increasing of the world energy consumption may not be fulfilled by the availability of fossil fuel in the next 100 years. An alternative solution to mitigate this problem is utilizations of renewable energy. In accordance to this issue, this thesis addresses a stand-alone photovoltaic system for residential application in the rural areas of Banda Aceh, Indonesia. The system consists of a PV ar...
Boston-based Satcon, which provides power conversion and system design solutions for utility-scale renewable energy projects, announced recently that it had installed four 250 kilowatt Satcon inverters at the Orange County, Florida, Convention Center, which is the largest solar rooftop installation in the Southeast.
The convention center, located in Orlando, has 200,000 square feet of monocrystalline photovoltaic (PV) panels that will deliver 1.1 megawatts of clean solar power, or enough to power more than 100 homes for a year.
Designed and built by Johnson Controls Inc., a leading provider of products and services that optimize energy use and improve comfort and security, the solar array will also reduce carbon dioxide emissions by an estimated 1 million pounds per year, which is the equivalent of removing 100 cars from U.S. roads.
The inverters, Satcon’s patented PowerGate® Plus, convert the direct current (DC) energy from the solar array to alternating current (AC) for use in the convention center. Inverters are an essential aspect of alternative energy production, enabling conversion of DC to AC, which is how the utility companies deliver power in the United States. Thus, American businesses and homes are electrically configured to accept only AC power, with DC conversion modules built into such items as PCs and telephone answering machines.
The solar array, with its Satcon inverters, is expected to significantly reduce the amount of electricity the convention center currently gets from local utility Progress Energy. Progress, which gets more than one-third of its energy from nuclear power (a resource it is lobbying for inclusion under Waxman-Markey’s renewable energy standard, or RES), has only about 25 kilowatt-hours of solar energy in its mix.
A Climate-Change Education Center inside the Orange County Convention Center will show visitors and students how much solar energy is being produced at any given time, as well as information on carbon emissions reductions and system efficiency – a rating certain to be improved by Satcon’s world-class inverters, which have demonstrated their reliability across thousands of hours of commercial use. This education center also details the effects of global warming due to fossil-fuel burning.
The solar array, a cooperative venture between Johnson Controls, Satcom and the Orlando Utilities Commission (OUC), was put in service on May 14 with various Florida political figures in attendance, as well as representatives from the OUC, the U.S. Department of Energy, the Florida Department of Energy, and the Orange County Environmental Protection Agency.
The Orange County Convention Center is the second largest convention facility in the nation, bringing about 1.4 million visitors to Orlando to attend more than 250 scheduled events, so the addition of a solar array and Climate Change kiosk can only benefit solar energy by introducing its tremendous rewards in terms of clean, renewable (and, soon, competitively affordable) energy.
About the Author:
Cooler Planet is a leading solar resource for connecting consumers and commercial entities with local solar Installers. Cooler Planet’s solar energy resource page contains articles and tools about solar panels to help with your solar project.
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This ultra-efficient Sundanzer solar-powered freezer provides exceptionally low energy consumption, requiring less expensive power systems and providing lower operating costs. Can run on a solar panel, battery and 15 Amp charge controller (not included) in most areas. U.S.A. Style: Freezer, Storage Volume (cu. ft.): 5.8, Works With: Requires 175 Watt solar panel, 250 Ah battery and 15 Amp charge c...
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