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Isaias ends historic Atlantic hurricane lull after sunny southern summer

Dr. Hugh Cutcher

Solar Analysis

Isaias ends historic Atlantic hurricane lull after sunny southern summer

An unusually quiet Atlantic hurricane season brought sunnier-than-average conditions across the southern US and Mexico, while prolonged dry weather contributed to elevated soiling losses before Isaias signalled a change in the pattern.

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Solar Analysis

England and Wales lead western Europe’s record summer irradiance

Dr. Hugh Cutcher

Solar Analysis

England and Wales lead western Europe’s record summer irradiance

Western Europe’s summer irradiance reached 6.9% above average in 2026, with England and Wales recording the region’s largest increase.

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Solar Analysis

Weaker monsoon lifts irradiance in Western India as August storms dim the East

Dr. Hugh Cutcher

Solar Analysis

Weaker monsoon lifts irradiance in Western India as August storms dim the East

India’s 2026 summer monsoon produced sharply contrasting solar conditions. Irradiance increased across major PV-producing regions, while tropical depressions brought cloud, rain and significant deficits farther east.

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Solar Analysis

Operating a solar forecast under a penalty regime: what we've learned across multiple markets

Harry Cheselwoods

Insights

Operating a solar forecast under a penalty regime: what we've learned across multiple markets

What running solar forecasts into penalty markets across many countries has taught us about site adaptation, P90–P10 bidding and curtailment in practice.

Insights

Dry August pushes Dallas soiling losses towards 2% as North American GHI diverges

Dr. Hugh Cutcher

Solar Analysis

Dry August pushes Dallas soiling losses towards 2% as North American GHI diverges

August brought contrasting solar conditions across North America, with above-average irradiance in the south-central United States and modelled soiling losses near Dallas approaching 2%.

Solar Analysis

Sunny north and cloudy south as Super El Niño defines South American winter

Dr. Hugh Cutcher

Solar Analysis

Sunny north and cloudy south as Super El Niño defines South American winter

The first full El Niño winter since 2015 brought larger irradiance swings across South America and two rare snowfall events in Chile's Atacama Desert that likely affected solar generation.

Solar Analysis

El Niño transition and a subtropical shift reshape Asia’s summer solar resource

Dr. Hugh Cutcher

Solar Analysis

El Niño transition and a subtropical shift reshape Asia’s summer solar resource

Summer 2026 produced sharply contrasting solar conditions across China. A northward shift in the Western Pacific Subtropical High increased cloud and rainfall in Northeast China, while supporting sunnier conditions and irradiance gains of 20% to 25% across Sichuan, Chongqing and Guizhou.

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Solar Analysis

Europe’s solar resource surplus continues before late-August cloud shift

Dr. Hugh Cutcher

Solar Analysis

Europe’s solar resource surplus continues before late-August cloud shift

Europe's solar resource remained above average through August, before a weakening weather pattern brought shifting irradiance conditions later in the month.

Solar Analysis

Despite record U.S. heat in July, North American irradiance remains near average

Dr. Hugh Cutcher

Solar Analysis

Despite record U.S. heat in July, North American irradiance remains near average

July 2026 was the hottest month ever recorded in the United States, yet North American irradiance remained close to long-term averages. Wildfire smoke and localized storms offset what could have been a stronger solar resource month.

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Solar Analysis

Partial U.S. eclipse produced similar daily solar energy losses to higher-obscuration European locations

Dr. Hugh Cutcher

Solar Analysis

Partial U.S. eclipse produced similar daily solar energy losses to higher-obscuration European locations

Eclipse timing played an important role in shaping daily solar losses during the 12 August event, while cloud conditions further influenced observed impacts. The study also examined electricity-market responses across Spain, France and New York.

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Solar Analysis