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David Boyce has solar electric panels on his house. He spent $20,000 for them in 1998. But he says people who are interested in solar thermal heat can install a system for much less money. |
(MPR Photo/Lorna Benson)
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David Boyce has solar electric panels on his house. He spent $20,000 for them in 1998. But he says people who are interested in solar thermal heat can install a system for much less money. |
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