I mention that by way of suggesting that we should be looking at narrow energy—to use an analogy from banking—as well as universal energy.The new Langage power station, near Plymouth, is a modern, state-of-the-art, gas-fired power station, but it appears to have no system of combined heat and power—at least, no such system has been mentioned in descriptions of the plant that I have read. On the continent, it is almost de...