What it does over twenty years
Degradation, shading, heat, weather and warranties — what an underperforming system is usually telling you, and how to tell normal from broken.
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Solar Monitoring: Reading Production Graphs and Spotting Faults
Learn how to read solar production graphs, distinguish normal behavior from faults, and use monitoring to verify system performance.
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Solar Panel Angle and Direction: What Actually Changes Output
How tilt and azimuth affect solar panel output. Learn why the optimal angle is rarely best for real roofs, and what to expect from non-ideal orientations.
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Solar Panel Cleaning: When It Helps and When It Doesn't
Learn when solar panel cleaning is worth it, what rain already does, and what damages panels. Honest guide to production gains and safe methods.
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Solar Panel Degradation: Rates, Warranties, and Failures
Learn how solar panels degrade over time, what performance warranties cover, and how to distinguish normal degradation from failure.
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Solar Panel Shading: What It Costs and Why
How shade affects solar panels, why one shaded cell hurts the whole string, bypass diodes, and design fixes. Understand partial shading losses.
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Solar Panel Warranty: Product, Performance, Workmanship
Understand the three types of solar warranties: product, performance, and workmanship. Learn what each covers and what to check in your contract.
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Solar Panels in Snow, Hail and Storms: What to Expect
How snow, hail, and storms affect solar panel performance and durability. Learn what is normal, what is damage, and when to take action.
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Why Heat Reduces Solar Panel Output
Solar panels produce less as they get hotter. Learn the physics, temperature coefficient, and why cold, bright days are best.