Can Do—Even in a Condo: How to Go Solar
(Page 2 of 2)
January/February 2009
By Sarah Lozanova
We reduced the size (and cost) of our solar system by first reducing the amount of electricity we consume. We purchased energy-efficient appliances and installed efficient light bulbs. We frequently line-dry clothes in our laundry room, which also naturally adds humidity to dry indoor air. We use the air conditioner modestly.
We also conducted a home energy audit using a home monitoring device. We found that our television, VCR, DVD player and stereo all constantly drained electricity, even when they were turned off. Now we use power strips to turn them off completely when not in use.
To determine what size solar system we would need, we calculated our annual energy use. The National Renewable Energy Laboratory has a free online program called PV Watts that considers system efficiency, local climate and available daylight to estimate any given solar system’s output. We then matched the system’s estimated output with our electricity consumption over the past year.
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Financial analysis and energy output
We received the Illinois state rebate, which paid 30 percent of the solar system’s cost, as well as a $2,000 federal tax credit. The paperwork was simple, and we got our checks quickly. The two incentives reduced the solar system cost by nearly 50 percent.
Illinois recently passed net-metering legislation, making it one of 42 states that purchase surplus electricity generated from solar systems. We generate surplus by day and take electricity from the grid at night. My neighbors like knowing that a portion of their daytime electricity may have been generated on their own roof.
We expect the solar system to increase the resale value of our condominium. Along with several other eco-friendly improvements, the solar system will help us market our home as a “green condo” when the time comes to sell.
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