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wexler88 | 4 years ago

Solar is an excellent replacement for home heating oil during the Michigan winters.

The vast majority of people in Michigan are already connected to an extremely efficient distribution network for electricity. The marginal cost of delivering additional energy through this network does not round to zero, it is zero. Meanwhile heating oil is delivered by trucks with a large cost in depreciation, labor, and fuel (further fossil fuels burnt in support of a system which was designed to make economic sense with <$10 oil). Whereas domestically produced oil can never drop below $40-50 a (marginal) barrel at the refinery, and imported oil never realistically below $30 + the cost of fighting forever wars for resources, there is a clear and feasible convergence of the marginal cost of solar energy generated in the Southwest US to $0. All this would make solar a viable replacement even without the role of heat pumps, which reduce the raw energy cost of heating with solar to around 20% of that of burning fuel.

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throwtheacctawy|4 years ago

I live in Michigan. I have a 5.9kwh solar array. Spring/fall, I can produce over 40kwh/day. Summer heat lowers my production to upper 30-40kwh.

January 2021, I produced 197kwh the entire month.

I know this discussion is focused on heating. But from an electric vehicle perspective; 197kwh is not that much. In the winter, I don't think it would be enough electricity for a homes electric needs + EV or electric heat.

I can make 1MWh over 1 month in the summer. Basically, Michigan has short days in the winter. Snow does sit on top of the solar array until it melts, which robs me of production during sunny winter days.

It wouldn't be impossible to use solar to replace heating oil in Michigan, and the over capacity installed to satisfy winter demand could serve as a "peaker plant" during the warm summer months.

While I know renewables have decreased in costs, I think the costs related to building overcapacity is a hindrance.

adrianN|4 years ago

It's not that hard to store solar power as Hydrogen and turn that back into electricity. The end-to-end efficiency is not as good as for batteries, but building something that can hold Hydrogen for a few months is cheaper than building the equivalent amount of batteries.

wexler88|4 years ago

Did you miss the part where Michigan is already connected by a transcontinental electricity distribution grid to places like Las Vegas (8 average hours of sunlight in January, average temp 9C in January)?

relaxing|4 years ago

Can you not get out there with a long handled broom and knock the snow off?

Serious question, I’m debating a similar setup for myself.