Study finds heatwaves cause up to 90% hourly losses at Iberian solar plants

Research from Portugal quantifies how extreme heat reduces photovoltaic output during peak afternoon temperatures through module degradation and inverter throttling, a finding relevant to solar deployment in heat-prone regions.

First covered Jul 11, 2026 · 1:30 AM PT · 1 article · no longer in the live window

Study finds heatwaves cause up to 90% hourly losses at Iberian solar plants — Image via pv-magazine.com

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77d PV Magazine Study finds heatwaves cause hourly losses of up to 90% in PV plants in Iberian peninsula — Researchers in Portugal found that Iberian heatwaves can cause sharp but short-lived PV yield losses, mainly during peak temperature hours due to module…

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doi.org Heat Waves and Photovoltaic Performance: Modelling, Sensitivity, and Economic Impacts in Portugal

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Appeared in: 2026-07-11 (#3) · 2026-07-12 (#4) · 2026-07-13 (#8)

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