How it WorksThe Basics
Solar modules create electricity when the sun's energy releases electrons from their bonds in the silicon semiconductors. These electrons travel through wires to an inverter that converts the power to the type used in your building or is fed back to utility grid. A grid-tied solar electric system requires solar modules, mounting hardware, cabling, one large, or multiple smaller inverters, safety disconnects and a meter for tracking energy sent back into the grid. PV Array The solar modules produce DC electricity. These modules can be installed on the roof of a building, create the shading cover for carports, or be mounted on the ground or poles. The maximum size of the system is often determined by the available area where sunlight is unobstructed by other structures, trees or equipment. Inverter The DC power from the solar modules is carried to an inverter that converts it to AC power. The inverter can be placed in a utility room or outside, usually not far from the solar modules. The power produced by the inverter is the same type of power as fed from your power utility, but is often "cleaner". Revenue Grade Meter Most power companies that purchase or credit your excess energy will require a bi-directional meter to track your contribution to the grid. This excess power cancels out your usage when the modules are not producing electricity, such as at night. Utility Grid In a traditional grid-tie application, your building will always remain connected to your existing utility company. Check out the college’s Solar Energy Generator Dashboard
A lot of people have been talking about the Dashboard that was created when the solar panels went live on the Scot Centre roof. Just in case you haven’t come across it yet, here at last is the link. It’s a pretty cool interface. It tracks power generated by the panels and can be customized to display by the hour, the day, the week, etc.:
It also features a nice explanation of how solar power works for these particular panels:
Go ahead, procrastinate a little! Watch them produce clean energy in real time! Start obsessing over your Kw hours!
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Why Solar?Solar for your business, school, or government facility can mean free energy and a new revenue stream while protecting you against rising and unstable energy costs.
» reduced utility costs
Electricity costs are expected to rise over the next 5 to 10 years. Solar is a secure investment that reduces your exposure to rising energy prices. » protect against energy volatility Solar energy allows you to predict your energy costs, insulating you from dramatic swings in electricity rates. A solar power system gives you an absolute value in your financial planning. » tax incentives and rebates Goverment and local rebates can reduce your initial costs by 50% or more. » point of difference Much of the power we currently use comes from coal-fired and natural gas power plants. Solar energy not only reduces your operating costs but can be a powerful marketing tool and strong public relations statement. » reliability With very few moving parts, a solar installation operates reliably for long periods of time with virtually no maintenance. Most solar panels have a guarantee of 25 years and a life expectancy of over 30 years. |
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