Dear Baroness,
I'd like to know why the government doesn't ban companies from using regressive tariffs with standing charges, which mean that people who use least are paying proportionally more for their fuel than those who use most. These tariffs are subsidising the profligate users at the expense of the frugal.
I realise that suppliers want tariffs which reflect the economies of scale in running the business, but it seems to me that rewarding people for using more is the wrong priority. It's not environmentally friendly, and on the basis that the poor will tend to be the ones who use least fuel, it's exacerbating fuel poverty too. It has a similar effect on the poor to having no tax allowance, and a basic rate of income tax higher than the top rate.
My electricity tariff is £69 +13.74p/unit, so taking that as an example, an average user (3300kWh PA) would be paying £552, with £275 for low user on 1650kWh PA and £701 for a high user on 4600kWh PA. (Low/average/high categories as defined by OFGEM.)
Now imagine scrapping the standing charge and changing the unit charge to 15.83p: low, average and high users would now pay £261, £552, and £728 respectively. That amounts to a 5% discount for the environmentally friendly frugal user who may well be on a tight budget, and a 4% increase for the heavy user who contributes more to carbon emissions. The average user pays the same.
Better still, consider the following scenario: change the unit price to 19.0p and give consumers the first 400kWh PA free of charge. Now the same low average and high users will pay £238, £552, and £798. As before, the average user still pays the same, but compared with the original tariff with a standing charge, the frugal user now gets a 13% discount, and the high user pays 14% more.
The first suggestion is better that the status quo because it is neutral, so that every user pays proportionally the same for their fuel rather than penalising the frugal. However, the second example is better still because it is progressive, and proportionally increases the cost as you use more fuel, which not only creates the right incentives for the environment, but also goes some way to alleviating fuel poverty. The actual figures are just an example to illustrate the point of course, it's the principle of using progressive tariffs that I'm arguing for.
I think that this policy should be applied to gas and electricity, but even more to water, in which rateable value tariffs are the most regressive system of all.