The Conservative party’s “Right Way” policy document contains a significant numerical error regarding the estimated cost of transitioning to net-zero emissions in the United Kingdom. The document asserts that the Climate Change Committee estimated the cost at £957bn, but this figure represents a doubling of the actual amount through what appears to be a spreadsheet error.
The original source of the error traces back to an article published in January 2026 by David Turver, a retired engineer who described himself as an “accidental energy analyst.” Turver’s analysis mistakenly calculated the net-zero cost at £957bn by adding all figures in a Climate Change Committee spreadsheet twice over, failing to account for rows that already contained combined totals. The Climate Change Committee’s actual 2020 estimate for the net cost of net-zero was £478bn—exactly half the erroneous figure.
The Climate Change Committee has since revised its estimates downward. In 2025, it recalculated the net cost at £108bn over the period from 2025 to 2050, representing less than 0.2 percent of gross domestic product. This revision reflects significantly declining costs for key technologies, particularly electric vehicles. The committee has indicated that implementing net-zero policies would cost less than a single fossil-fuel price shock and would deliver annual benefits worth approximately £110bn.
Turver’s miscalculation was subsequently cited by the Institute of Economic Affairs in a report released in January 2026, and the erroneous figure was later repeated by the Great British Think Tank in March 2026. The Conservative party appears to have drawn upon these secondary sources when compiling its policy document, perpetuating the mathematical error. The Conservative document references the Climate Change Committee’s 2020 carbon budget advice, which does not actually contain the £957bn figure.
Article Attribution | Read More at Article Source
Article summary produced by Claude AI