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On a further note: Photovoltaics have an expected fifty year lifespan, with only 35 years at 80% or greater efficiency. Beyond fifty years, it's likely not worth the trouble to maintain a system around the panels, you'll be getting so little electricity.
I talked to one of the engineers who'd worked on the local wind plant up north about private wind installations. He stated that we'd have to install weather sensors and data collection equipment and gather over a year's worth of data and send it back to France for analysis before we could even consider it. That was a bummer.
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