This is a Guardian "Brief letters" page, in which readers respond to recent articles. The lead letter takes issue with a visual analysis of Britain's green energy transition (4 July), noting that it overlooked water power; the writer argues that wave power, tidal power and hydroelectricity all deserve a place in the conversation alongside wind and solar if the country is serious about building a resilient, low-carbon energy system.

The remaining letters cover unrelated topics from other recent articles. One responds to a report that UK mobile internet coverage lags all EU and G7 countries, observing that a phone near the Dorset cliffs picked up service from a French provider, Bouygues Telecom, with Cherbourg 58 nautical miles away. Three further letters riff on football and politics, prompted by Donald Trump asking Fifa president Gianni Infantino to review Folarin Balogun's red card — variously suggesting that regimes flouting international law be excluded from international events, joking about a "recount" for the USA's 4-1 defeat to Belgium, and quipping that Trump motivated the wrong team.