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Why Your Solar Panels Never Hit Their Rated Wattage
By: David Coleman · Published: 2026-09-25 04:14:32 · Updated: 2026-10-06 12:29:17
A panel's wattage is a lab rating at 1000 W/m² and 25°C. Here's why UK roofs rarely match it, and why annual kilowatt-hours are the honest measure.