A few weeks ago, we talked about some real-world numbers shared by Redditors who added a rooftop solar system to their homes. Not to be outdone, Electrek readers took to the comments to share their own real-world solar numbers. Here are some of the best!
That original post, which you can read here, was inspired by a Reddit user going by DontBuyBitcoin who shared a screenshot on r/Solar indicating that their newly-installed ~11.5 kW system produced over 1,700 kWh of electricity in October. “Pretty surprised by the production of the system I got,” writes DontBuyBitcoin. “11.48KW. I cant wait to see what JUNE-AUGUST [2026] going to look like 😍 I wish SolarEdge will make their app better looking with more functionality.”
Other Redditors were quick to share in the enthusiasm, but our Electrek readers weren’t going to be outdone, and shared their own results in the comments section.
I’ve got a 49 panel, 16.5 kW system just outside Austin, TX, and while it’s expensive ($320/mo), I produce much more power than I use each month. But with 2 EVs, a hot tub, and air conditioning in a Texas summer, I’m not mad I have all this. On a current sunny day, I’m producing about 65 kWh. I top out around 107 kWh on a long but somehow not hot day.l in late spring or early fall (whatever that means in Texas).
Another reader, Craig Morrow, had a much smaller system at “just” 6.5 kW compared to David’s 16.5 kW deal, but still put up some highly respectable numbers.
My 6.5 kw PV generates from 16 kwh/day (winter) to 38 kwh/day (late spring). Between the efficiency of my house and my consumption habits, my usage averages 5-6 kwh per day. Went all-in on passive and active solar when I built the house ten years ago, an investment which has long since paid for itself with no heating or utility bills, plus having battery storage means no worries about power outages when the grid goes down. A great feeling to be energy independent!
Craig had the top comment with twenty upvotes, but he wasn’t the only reader to see some big efficiency gains with home solar. Several of you posted about the cost of your system, and when you’d begin to see an ROI with the savings you were seeing.
My ROI on a $42k system ($30k with the IRA tax credit) was calculated to be 15 years assuming a 4% yearly rate increase. Without the tax credit it would likely be 20+ years. It makes no sense financially. Interestingly, Europeans pay a lot less for similar size systems. Why is that?
Another commenter, Leonard Bates, was also seeing great returns – but took things a step further by doing some extra math to compare the cost of fueling up his car with gas vs. topping it off with electrons generated by his home solar system.
It is hard for the average Joe to understand electricity production numbers, so I have reduced our experience into dollars. We have a 8.8 kWh rooftop system and two EVs that (other than a few vacation trips a year) are charged at home. We are retired, so we can charge during the day. Bottom line, we saved over $4,000 by not buying gasoline last year (drove ~41,000 miles). Electric bills, with the load of the EVs, is basically a breakeven. The system cost us about $22,000, so a breakeven on the system of about six years and then free electricity for another 20, until the panels need to be replace. Plus we are “energy independent” for our cars. If there is turmoil in the Middle East, it doesn’t affect our pocket books.
Leonard’s math reminds me of landscaper Colin Ash, who has been operating Ash Landscaping for over 30 years and recently traded his diesel excavator in for an electric JCB mini excavator he powers exclusively with solar panels mounted on his carport. “I’m a long-time electric vehicle driver and run my cars on solar energy generated from solar panels on the roof of the car port at my home,” explains Ash. “Adding the new JCB 8008E CTS was a perfect next step and I can plug it in next to the car and charge both overnight.”
So, Ash is happy. It seems like you guys are pretty happy, too – even without the home solar tax credit that a lot of you didn’t even know existed in the first place. Here’s hoping a lot more people decide to share their results with home solar, too.
Or, as one of our commenters put it:
If more homeowners share data like this, it’ll help others make informed decisions rather than relying just on sales projections.
Original content from Electrek.
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