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ThatOtherGuy_CA t1_iy0vnjn wrote

Reply to comment by musicantz in News Release: NREL Creates Highest Efficiency 1-Sun Solar Cell - 39.5% efficiency by TimeSpentWasting

Right now it’s about 10 years without subsidies and 5 years with in most places.

Obviously the exact economics depends on your location and your local price of energy. But my companies been installing systems for commercial and industrial, and the saving off of their power bills straight up pays for the system, and once it is paid of, it’s free energy for the life of the panels.

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HORSELOCKSPACEPIRATE t1_iy1j71r wrote

Residential payoff takes a lot longer unless your roof, weather, and/or local electric regulations are really good, especially now that interest rates went up. Most are paying 4 cents per watt financed at at 3%+.

I got in at .99% and it still wouldn't be obviously worth it in terms of ROI if not for the tax refund. A big cash infusion when the market is low like this could tangibly impract retirement age. But without it, especially with interest rates as they are now I could see people taking longer than the 20-25 year life of their loan to net positive.

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