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Energy Prices

May I add that it is not only the most vulnerable people in society who do not understand the tariffs? In fact, very few people understand them. A fundamental problem is the idea of a unit. I do not know what a unit is. I do not know whether my hon. Friend knows what a unit is. We must start using language such as ““an hour's use of a bulb””, or some other form of consumer language. Companies need to be much less old fashioned, and much better at consumer communication. They need to communicate the value of the units and what we are paying for them.