r/solar↗
Solar
Discussion of solar photovoltaic systems, modules, the solar energy business, solar power production, utility-scale, commercial rooftop, residential, off-grid systems and more. Solar photovoltaic technology is one of the great developments of the modern age. Improvements to design and cost reductions continue to take place. How efficient will it become? When will it become so affordable that it's accessible to everyone? How are other energy industries having an effect on solar pv?
204k subscribers489 posts / mo in Sep 2026 (incl. <1% by known bots)402 authors / mosince 2008
r/solar has 204k members (+13% over the last 12 months). It gets about 489 posts a month from 402 people. Top topics: Solar Panels, Solar Panels Discussion and Solar Panels & Powerwalls.
When to post on r/solar
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How r/solar has grown
Subscriber growth
Subscribers over time
Monthly activity
Posts, comments and authors per month
Topics and brands on r/solar
Top topics
Share of the subreddit's posts
- Solar Panels2.5%
- Solar Panels Discussion2.4%
- Solar Panels & Powerwalls1.6%
- Renewable Energy Transition1.2%
- Solar Energy Trends0.9%
Brands people mention
Most-mentioned brands and sites, last 12 months
- Enphase Energy
- PG&E
- SolarEdge
- EnergySage
- Tesla
Everything else about r/solar
Posting rules and account requirements, how often posts get removed, who writes here (age, gender, countries), what people ask for, how they talk, and related subreddits — all in the full report.
Posts and activity for Sep 2026. Members from Reddit's subscriber counts. Read from the same data the app runs on. Our research