For years, I'd debated whether residential solar would make sense for my home. The math never quite clicked, and I refused to go into debt by signing a $30,000 contract or leasing agreement with a door-to-door solar sales company. It wasn't until the end of 2025 that the market finally forced my hand.

The combination of a steady, upcoming increase in electricity rates, the impending January 1, 2026, expiration of federal tax rebate incentives, and battery tech actually improving in recent years made a far-off "maybe one day" dream into an achievable DIY project. The announcement that a new hyper-scale data center was going in a few towns over made the decision to finally jump in a no-brainer.

Many of my tinkering projects are driven by curiosity. I like to see if I can accomplish a goal without paying as much as expected, and I'm admittedly motivated by the feeling of getting away with an unexpected hack. Channeling a little ingenuity and effort feels like an arrogant middle finger at being told what I have to buy, and nowhere was that feeling more satisfying than in this solar project. If you've been thinking similarly about making the leap to solar power, I know how intimidating it can be. But in my experience, the squeeze was well worth the juice I got in return.

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[–] 5 points 1 month ago (2 children)

Regarding 1, perhaps you are the one trying to generalize your local market to everywhere else?

See:

Arizona, USA:
Soak up the sun: Impact of solar energy systems on residential home values in Arizona

In particular, properties with electricity-generating solar panels enjoy an average premium of approximately $45,000 (15% of medium home value) and transaction price premium of $28,000 (17% of medium home sales price).

California, Connecticut, Massachusetts, and Oregon - USA:
Solar at High Noon: Solar Home Premiums in a Rapidly Maturing Market:

We find clear evidence that solar systems are correlated with higher selling prices if those systems are owned by the homeowner (HO). Alternatively, we find no value or slightly lower values associated with non-owned panels

Southport, Australia:
House price premium associated with residential solar photovoltaics and the effect from feed-in tariffs: A case study of Southport in Queensland, Australia

Using the hedonic approach, the study found that the gross premium was 4.3% of the average house price; the average net premium (exclusive of the PV installation cost) was 21,403 AUD when the FiT was at 44 cents/kWh; when the FiT dropped to 8 cents/kWh, the gross premium fell to 2.4%, and the average net premium dropped to 5600 AUD. The study shows that a solar PV house does enjoy a premium in terms of property value and indicates that a higher solar rebate and subsidy leads to a higher premium

Germany:
Estimating the impact of energy efficiency on housing prices in Germany: Does regional disparity matter?

If energy efficiency increases by 100 kWh/m2a, prices increase by 6.9% on average [...] there is evidence that about 98% of future energy cost savings are already reflected in a higher housing value under myopic expectations regarding future energy prices.

Italy:
The Market Price Premium for Residential PV Plants

Our results show that individuals are willing to pay an additional price for a solar home, and the average market price premium is equal to 2.69% for monocrystalline PV plants and equal to 3.08% for polycrystalline PV plants respectively.

UK:
Returns to solar panels in the housing market: A meta learner approach

Our results point to a selling price premium above 6% (range between 6.1% to 7.1% depending on the meta-learner) associated with solar panels. Considering that the average selling price is £230,536 in our sample, this corresponds to an additional £14,062 to £16,368 selling price premium for houses with solar panels.

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  • [–] 1 point 1 month ago* (1 child)

    So to do an accurate property value assesment (what you're doing) you'd need to provide at least 5 examples from each of those regions, only including comparable properties. In other words you need to isolate that it was the solar panels and not a litany of other potential factors.

    I'm not saying solar doesn't improve property value.

    I'm saying you cannot take one example and apply it to an entire market. Which you just did x6.

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  • [–] 3 points 1 month ago

    So to do an accurate property value assesment (what you’re doing) you’d need to provide at least 5 examples from each of those regions, only including comparable properties. In other words you need to isolate that it was the solar panels and not a litany of other potential factors.

    Exactly, and all studies take that into account and use the same hedonic price models which most appraisals rely on.

    Apologies for not providing links to some of those locked papers, as Anna's Archive is down right now, otherwise you could also dive further into their methodologies

    I’m saying you cannot take one example and apply it to an entire market. Which you just did x6.

    Which is not the case with these studies, as explained above, so once again, perhaps you are the one trying to generalize your local market to everywhere else?

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