The unprecedented heatwave in June 2026, with temperatures soaring above 37 degrees in some parts of the UK, had significant economic repercussions by making work activities more challenging.
Verdant, a think tank focusing on economic policy, has released its initial assessment of the economic impact stemming from this extreme heat. Their research identifies 30 degrees as a critical threshold where productivity losses become notably severe.
According to Verdant’s analysis of UK local authority regions, which experienced days above 30 degrees in June, the direct impact on productivity due to this heatwave resulted in a minimum of £2.4 billion in lost output.
Productivity
Dr. James Meadway, co-director of Verdant, commented: “These initial estimates highlight that the economic costs of extreme heat are already upon us and are likely to intensify.
“Immediate government action is essential to mitigate the damage, including setting a maximum working temperature to protect employees.”
With a third heatwave impacting the UK and much of Europe in July, further economic losses are anticipated this year.
Looking forward, if heatwaves continue to develop annually at the rate observed over the past decade, these losses could become substantial. Verdant projects that by the end of 2030, output losses from heatwaves could reach at least £25 billion without intervention to alleviate their effects.
These projections solely account for productivity losses due to extreme heat.
Extreme
They exclude potential losses from escalating energy costs or the long-term impacts on investment and the broader macroeconomy, suggesting these figures represent a minimum expected loss from extreme heat.
Extreme heat’s well-documented effects on productivity include physical challenges in performing tasks, cognitive impairments, and damage to infrastructure and equipment. Prolonged periods of intense heat, as experienced in June, exacerbate these economic losses.
The Committee on Climate Change has advocated for an average annual expenditure of £3.85 billion on adaptation measures to counter the effects of extreme heat over the coming decades.
Such expenditures will need to be undertaken by the government, businesses, and households, including the installation of air conditioning in public buildings.
Notably, these anticipated costs are significantly lower than the expected minimum losses from extreme heat, which are projected to escalate rapidly each year until the decade’s end and beyond. The economic rationale for investing in adaptation is compelling.
Greening
Verdant proposes four primary policy recommendations. These include instituting a national maximum working temperature, a measure also recommended by the Committee on Climate Change and already in place in Spain and Belgium;
Additionally, they suggest a novel national heat insurance mechanism to compensate those unable to work when temperatures exceed the set maximum, potentially funded through an Extreme Weather Levy on fossil fuel investments.
The government should also invest in active cooling, prioritizing healthcare settings but extending across indoor workplaces, ideally paired with renewable energy generation;
Finally, Verdant advocates for redesigning urban environments to mitigate heat retention, including greening urban spaces, mandating passive cooling in new constructions and renovations, and providing public cooling areas.
This Author
Brendan Montague is an editor of The Ecologist.
