Summer 2026 was the UK’s hottest on record
The Met Office confirmed a UK summer mean temperature of 16.5°C, beating the previous record of 16.1°C set only last year. 54 weather stations set all-time records, and the hottest day of the season was 38.2°C at Hartpury College on 13 August. The Met Office estimated a summer like this was around 130 times more likely because of human-induced climate change.
Hot summers increase cooling loads in offices, data centres, cold stores and retail. Without sub-metering on chillers and air handling plant, that extra cost is invisible until the bill arrives.
El Niño: 75% chance of a historic event
The US Climate Prediction Center’s 10 September update gave a 75% chance of a historic El Niño, stronger than any since 1950, during October to December. The key Pacific temperature index was 1.8°C above normal in August.
HMRC confirms the temporary VAT cut on electricity
HMRC published the details of the zero rate of VAT for domestic electricity in Great Britain, running from 1 October 2026 to 31 March 2027. Standard-rated business electricity is unaffected and stays at 20%. Charities and low-use supplies that already pay the reduced rate also benefit.
ESOS Phase 4: thresholds unchanged
Legal commentary on the new Phase 4 guidance confirmed that the qualifying thresholds are unchanged: 250 or more employees, or turnover above £44m and a balance sheet above £38m. Organisations meeting these on 31 December 2026 will need to comply by 5 December 2027.
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