London, United Kingdom
Steam power reaches the brewery
London porter breweries install steam engines for milling, pumping and hoisting, removing the ceiling that muscle power had placed on brewery scale.
1784–1800 · also called steam brewing, Boulton and Watt brewery, brewery steam engine
Grinding malt, lifting liquor and moving wort had depended on human and horse power, which imposes a hard limit on how large a brewery can be. London’s porter houses were already straining against it.
Boulton & Watt supplied engines to several of the large London brewers from the 1780s. Nothing about a steam-driven mill improves the beer; what it changes is how much of it one company can make, and therefore who is in the market at all.
Why it matters
The point at which brewing became capital-intensive, which set the direction of the industry for the next two centuries.
How well this is established
| Certainty | Documented. Supported by contemporary records that survive and are agreed on. |
|---|---|
| When | 1784–1800. Recorded as a period rather than a date because it happened over time. |
| Where | London, United Kingdom |
Styles this shaped
Either side of this
← 1784: Richardson publishes on the saccharometer · 1800: Indirect-fired kilning makes pale malt practical →
See the whole sequence on the beer history timeline.
Last reviewed 2026-08-16.