Energy units – muddle in the making?

It was decided early in the 1990s that the unit for pricing of domestic gas should change from the therm to the kilowatt hour, which is a metric unit but not SI. We ask if this made ‘metric sense’.
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A lesson from Sweden

We do not suggest that the UK should switch from driving on the left to driving on the right, but we ask if there are lessons from Sweden’s switch in 1967 that might be applied to the oft-postponed changeover of UK’s road traffic signs to metric.

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