OnSun: Solar PV Forecaster & Planner
Plan Your Solar. Maximize Savings.
What it does
OnSun helps solar homeowners maximize their energy savings. Get accurate 7-day solar forecasts, schedule appliances during peak production hours, and track your savings—all in one beautiful app. Take control of your solar investment today!
Does the same job
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My solar died for 6 months, so I built a watchdog27d ago · sunranker.com · ▲15Hi HN, Shawn here. My rooftop system lost about half a year of production and nobody told me. Not the installer, not the monitoring app, not the utility. I found out from an electric bill that made no sense, then spent weeks digging through the monitoring portal by hand. SunRanker is what I wished existed that day. Connect a system once (Enphase OAuth, or a SolarEdge site ID plus API key) and it reads production daily, shows it in plain language, and emails you when something actually changes. Three alerts only. The connection broke, the monitoring went quiet, or output has been well below…
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Open-source GTM skills for technical founders
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Switch from ChatGPT to Claude with import memory feature
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