Residential Solar Costs

Users share personal experiences with costs of solar panels, batteries, inverters, and installations across locations, discussing DIY vs professional setups, ROI timelines, subsidies, and comparisons to grid electricity prices.

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PNW AFAIK NY US DC CO2 EUR PV FWIW AC panels solar installation electricity roof kwh batteries cost costs grid

Sample Comments

2Gkashmiri Jan 25, 2021 View on HN

sounds good but i paid less than USD 1200 for the panels, inverter, cabling, installation.Our monthly power consumption is around 300Kwh in summers (no need for air conditioning) and double in winter months (need heavy heating but no electricity due to low supply/heavy snow). that gets to around USD 200-250 for a year. that gives me 22000/250=88 years of no electricity bills to repay this system. Note, my Kwh is USD 0.05the country is india where due to USD exchange rate which is

justahuman74 Jul 4, 2024 View on HN

At $1k for 20kw/h, I'd be very tempted to massively over-panel the roof and front/back yard on pergolas, install 200kwh of battery and never deal with pg&e again

tda Apr 25, 2021 View on HN

I paid €3900 for 22 panels, 7.2kw system here in the Netherlands. I did install it myself (but the whole package was delivered and the electric connections done by the supplier), and the panels and inverter are cheap Chinese brands. As I didn't situate them ideally and they lose efficiency as the heat up quite drastically I expect to generate between 4500 and 5000kwh. That should save me about €800 a year so this is a pretty solid business case.So to me the US prices seem even more ridic

jvdvegt Nov 6, 2022 View on HN

I've just bought 4800kWh solar panels (12*400Wp) and a converter with installation on a flat roof for about EUR 7500.

Rebelgecko Nov 6, 2025 View on HN

Where I live, $1000 would get you about 3kWh of battery power, which would pay for itself in a couple years

cheald Dec 21, 2023 View on HN

New solar has the same T&D costs (plus batteries!), doesn't it?

marcyb5st Jan 22, 2026 View on HN

You really said 12 USD/KWh? Time to put solar panels/batteries over there. Even if you resell to the grid at 1/10th of that you recoup the investment in O(months) and not O(years)

myrmidon Mar 28, 2025 View on HN

You can order 1kW of panels with 1kWh of batteries as a plug-and-play system off of Amazon for about $1k.Thats gonna generate >1MWh of electricity per year easily (probably closer to 2MW even), and with spot pricing for electricity at ~$100/MWh (Europe), this pays off within a decade easily.Provide numbers if you disagree.

nomel Jun 17, 2022 View on HN

Lets say 50kWh/day average, giving 1,500kWh/month. If it's only saving $65 on your electricity, doesn't that mean your electricity is around 4c/kWh? My math must be wrong. Are there other fees, or did you also include the payment for the panels?

krallja Dec 19, 2022 View on HN

The cost of the panels is already such a small fraction of residential install cost. My panels were definitely under a buck a watt (maybe 15% of the total cost). The installation cost (i.e. paying for a team of a dozen guys to dangle in harnesses on my steep roof for three days) absolutely dominated the invoice (50-60%). The second most expensive was the batteries (about 20%). The remainder went into the hundreds of other parts (inverter, cut-off, conduit, circuit breakers, cables, MPPTs, bracke