Could Natural History Museum go solar?

Alfred Waterhouse's terracotta cathedral of nature in South Kensington carries long slate roof ranges over its galleries — around 21,000 sq m in all. A full-roof read puts roughly 2.5 MW and up to 6,200 panels on it, some 2.1–2.6 million kWh a year. It's Grade I listed, so the figures are a measure of scale, not a proposal.

Roof area read from above: ~21,072 m².Imagery dated 2020-05-17.

Full methodology, assumptions and cross-checks: how we measure. Includes solar data from Google.

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