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a free guide to solar pv design and installation

I thought sharing the guide to solar photovoltaic design and installation manual published by the California Energy Commission (CEC) would be helpful to you to understand the details behind solar electric systems. The guide does a good job starting from the basics and even includes example single line diagrams of how a solar electric system would interface with a home. Towards the end of the PDF file there is a nice table that helps you determine the optimal wire size needed to minimize voltage drop. I figured since many people call us that want to learn all the details about solar power, this would be a good starting point. What do you think about the free guide to photovoltaic design and installation by the...

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SolarWorld makes an offer to buy Opel

SolarWorld, is a leading German solar panel manufacturer made an unsolicited bid to by Opel from General Motors (GM) today, although GM refused the offer and said Opel is not up for sale. GM owns Opel, which is a German automobile brand. According to SolarWorld, they want to take the Opel brand and turn the product line exclusively into full electric and hybrid vehicles. There is room for a great partnership between solar pv panels and electric based cars. Imagine a world in which every home and business has solar panels on top of their roofs and people can charge their cars right from the power of the sun. I think GM should sell the division to SolarWorld, because at this point they are very low on options, plus I think this is the reason GM is in the problem they are in because they are so spread thin from their core business. The management can’t even make the GM brand profitable, I don’t understand why they would want to hold on to brands that they just can’t afford to hold onto right now. As the electric car and hybrids vehicle industry continue to move forward, we are seeing a close relationship developing with the photovoltaic industry. Should GM sell Opel to SolarWorld? What types of opportunities will this create for the...

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Oncor Electric Delivery to offer Rebates for Solar

Oncor is a regulated electric distribution and transmission business that provides electricity delivery to consumers. Oncor operates the largest distribution and transmission system in Texas, providing power to 3 million electric delivery points over more than 102,000 miles of distribution and 14,000 miles of transmission lines. Today the company revealed details of a plan to promote solar power to its customers by offering incentives to install solar panels that produce electricity. Oncor will pay up to $2.46 per watt for residential customers to install a solar electric system up to 10 kilowatts (kW)….that’s a significant rebate! Consumers will be able to Oncor will be opening up applications to their rebate program on December 1st and they expect 200 homes and 10 businesses to be part of the solar power installation rebate program moving forward in 2009. So if your an Oncor customer and want to install solar panels and get money back for going green, make sure to mark your calender to apply on December...

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Simple Grid Tie Solar Power System Drawing

The Guide to Photovoltaic System Design and Installation by the California Energy Commission has an interesting drawing of how a solar electric system wires up to the grid. Grid interactive systems do not have a battery bank, therefore if there is a blackout your power will also go down. A grid tied / interactive system is easier to install and takes 40% less time then a system with batteries because a grid tie system have less wiring and components to deal with. The diagram above shows how a standard solar power system is connected to the grid. Most homes and businesses that have solar electric systems in the USA are typically grid tie systems. The grid tie solar system diagram shows a great view of the difference between the DC and AC side of the system. As you can see the inverter is the hub of the system and an important part of the overall efficiency of the system. The PV Array is a group of solar panels wired together. The size of the array depends on your individual clean energy generation goals and electric needs. If you don’t know how to calculate the size of your system, see Calculating the Economics of Solar PV...

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