As the energy price cap rises, Telegraph Money tells you all you need to know Household energy bills will jump by £221 a year from July, as Ofgem announces the summer rates for the energy price cap. From July 1, the price cap will rise to £1,862 a year, up from the £1,641 cap set in April, as oil and gas price rises caused by the Iran war filter through to suppliers. Energy prices tend to be cheaper over the summer months, causing concern among experts over the prices households will face come October. Those on fixed energy tariffs will be unaffected by price cap changes for the duration of their term – but is now a good time to get a new fixed deal? Should you fix your energy bill? The quick verdict In short, if you can fix your energy price around today’s price cap equivalent, it is likely to represent good value for you.…