OwlTesla solar production monitoring: why we're investigating it
Tesla has an official energy API. OwlWatt does not support Tesla systems yet. Here is what it could deliver and what blocks it, plus what works today.
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Independent analysis on solar production, warranty claims, and what your inverter data is actually telling you.
SolarEdge Monitoring Is Now Available on OwlWatt
OwlWatt now monitors SolarEdge systems: backfilled daily history, expected production, guarantee shortfall math, hourly per-inverter power and optimizer status.
Read →A Landfill Solar Farm Missed Its Own Projection. Nobody Was Checking.
A 57-acre landfill solar farm produced 22.9 GWh in 2025 against a published 23.8-27.4 GWh estimate. The arithmetic on the gap, and why no one is positioned to say if it's weather or the plant.
Read →Is a solar production guarantee worth it? Four objections
Weather, ownership, the discount, the warranty: four fair objections to solar production guarantees, how the clauses are written, and where each is right.
Read →The year I found out my solar system was 25% short
My installer guaranteed 91% of quoted output. Year one came in 1,857 kWh under the floor. Here is how I found out, and what the contract said.
Read →Solar Company Not Responding? How to Document the Problem
When your solar installer stops returning calls, documentation is the lever, not persistence. Here is what to collect, in what order, and where to escalate it.
Read →Why Your Electric Bill Is Still High After Going Solar
Your electric bill is still high after going solar. Three things cause it, and the arithmetic that tells you which one is yours takes fifteen minutes.
Read →How to Tell If Your Solar Panels Are Underperforming
Your monitoring app shows green and you still suspect low output. Here is the test that settles whether your panels underperform, and the proof a claim needs.
Read →Enphase Envoy Production Readout Stuck at 0 Wh
An Enphase Envoy's local production readout froze at 0 Wh for ten hours while the meter kept counting. What I measured, ruled out, and still don't know.
Read →Why Your Solar 'Savings' Calculator Was Wrong
The savings calculator your installer ran assumed clear skies, no degradation, and a tariff that no longer exists. What to do with your actual numbers.
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