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Solar Panels


               
2022 Mar 27, 7:08pm   38,794 views  247 comments

by Eman   follow (7)  

Who here installed solar panels on their home? How has it been working out for you?

I did the math of Tesla solar panels. Cost is $17.4K after tax incentives. It would cover my monthly electricity bill of $230/mo on average. Add in a powerwall will increase the cost by $8k. Without the powerwall, it’s about 15% ROI. What am I missing?

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245   FortWayneHatesRealtors   2025 Dec 24, 12:30pm  

AD says

FreeAmericanDOP says


Concentrated Solar Failure


another R&D failure subsidized by the federal guvmint

so anything good came out of this like lessons learned to apply to a future similar or next generation renewable energy project ? could they salvage a lot of the hardware and software from this ?

or is this a total waste and failure ?


Lessons? It was all fraud, they’ll do it again. Success isn’t the goal, theft is the goal. And that goal was accomplished.
246   Patrick   2025 Dec 24, 2:46pm  

There are good use cases for solar, but I doubt that solar cells are one of those cases.

Using a parabolic mirror to concentrate sunlight on the cold water input to a hot water tank sounds cost-effective.

Arranging houses to take advantage of sunlight via solar mass is an old method that works. Iranians had that worked out millenia ago. They also did clever cooling with solar-heated chimneys.

I've long thought that algae and yeast based solar cells to create and then ferment sugars into burnable alcohol might also be worthwhile.
247   HeadSet   2025 Dec 24, 5:55pm  

Patrick says

Using a parabolic mirror to concentrate sunlight on the cold water input to a hot water tank sounds cost-effective.

That is a common technique out here. Virgina law requires that a rooftop solar water heater must feed into a conventional hot water tank. The purpose is to cool down the water since the rooftop system will heat the water above the 160 degrees considered safe for a hot water supply. I had an Australian friend tell me that back home there is no water heaters, as the issue there is cooling the water down (Australia is partly in the tropics).

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