Households could be paying considerably less for their energy come April, according to the latest predictions by consultancy Cornwall Insight. Prices for gas and electricity could drop by as much as 16% for domestic customers suggest the latest forecasts. For an average-sized household using a typical amount of energy this change would take a yearly bill from £1,928 to around £1,620 – a saving of more than £300. Costs, controlled by the energy price cap, are reassessed every three months to ensure customers are paying prices reflective of wholesale prices. And in a second bout of good news – C…