Electricity generated from peat peaked at 19.5% in 1990, apparently.

And that's far outstripped by the current figure for renewables (42% in 2025) - so renewables have enabled locally-sourced production to reach more than double the share that was ever managed in the peat-burning days.

(And the comparison is actually even better than it seems at first glance, given that the 2025 figures are all-island and the peat figures would be 3 or 4 points lower if you included NI. A good chunk of the 23.2% imports can probably also be classed as renewable, given that GB had a 47% renewable mix)