SunRanker

SunRanker is a monitoring service for residential solar systems that runs daily checks on your production and alerts you by email when something goes wrong. It connects directly to Enphase and SolarEdge monitoring accounts through their APIs, pulls your historical data immediately on setup, and starts watching for anomalies without any hardware to install or configure on your end. The founder built it after his own solar system went offline for months without any notification, leaving him with unexpected electric bills and a frustrating conversation with his installer about why nobody caught the problem sooner.

The issue SunRanker addresses is one that most solar homeowners don't think about until it hits them. Your panels can fail silently for an extended period. Inverters go offline, monitoring hubs lose their internet connection, panels degrade faster than expected, and the production numbers quietly drop without triggering any alert from your installer or monitoring portal. You only find out when the electric bill arrives higher than it should be or when you happen to log into your monitoring app months later and notice the flatlined graph. By then you've lost production you'll never recover, and you're left wondering how long the problem actually lasted.

SunRanker fills that gap with automated daily checks that compare your current output against what your system should be producing. It calculates a normalized performance metric based on kilowatt hours produced over the last twelve months divided by your installed capacity in kilowatts. That ratio stays relatively stable year to year regardless of seasonal fluctuations or system size, typically falling between 1,100 and 1,700 depending on your climate and location. When your actual production drops well below that baseline for several days, the service sends an email explaining what's happening in plain language rather than cryptic error codes.

Setup takes about a minute. For Enphase systems, you sign in and grant permission directly. For SolarEdge, you provide your site ID and API key, which takes roughly three minutes to locate in your monitoring account settings. Once connected, SunRanker pulls your historical data so it has a baseline to compare against, and the first automated check runs that same evening. From there it monitors daily but only emails you when there's an actual problem. Three conditions trigger alerts: your connection to the monitoring service was lost, your monitoring system went silent even though your panels might still be running, or your production dropped significantly below normal for several consecutive days. You won't get daily digest emails that train you to ignore them. Alerts arrive only when something needs attention.

Monthly summaries provide a snapshot of your system's health over time without requiring you to log into a dashboard. If your panels have been underperforming relative to weather conditions and available sunlight, you'll know before it becomes a surprise on your utility bill. That historical data also helps if you ever need to file a warranty claim or have a conversation with your installer about why your production numbers aren't matching the estimates they gave you at installation. You can disable any of the alerts from your account if you find them unnecessary.

The target audience is residential solar owners who want monitoring that works in the background without requiring constant attention. Commercial operators typically have more elaborate systems with dedicated staff watching dashboards. This is for the homeowner who installed panels, connected the monitoring hub, got busy with life, and would rather receive an email when something breaks than remember to check an app every week. The design philosophy prioritizes reliability and clarity over feature sprawl, giving you the alerts you actually need rather than a complicated dashboard you'll never look at.

SunRanker is completely free for homeowners with no premium tier or hidden costs. The service sustains itself through partnerships with solar installers who want to offer monitoring to their customers without building the infrastructure themselves. That business model means you get production alerts, connection failure warnings, and monthly performance reviews at no charge, and you're not the product being sold to advertisers or data brokers. Your dashboard stays private unless you explicitly choose to share it, connections are encrypted and revocable through your monitoring platform at any time, and deleting your system removes all associated data from their servers.