Power demand has been marginally higher so far this summer than it was a year ago.According to Belco figures, the peak load on July 19 was 112.6 megawatts, compared to 108.7 megawatts on the same date last year.However, while demand has been higher, a Belco spokeswoman said the cost of fuel on the world market had been lower.That translates into lower fuel charges this month when compared to the same period last year. The cost per kilowatt hour in July was 18 cents compared to 20.5 cents in July 2012.The spokeswoman encouraged customers to use energy efficiently, particularly during the hot summer season.“In years past, we have had peaks in July, August and in September,” she said.“It really depends on Mother Nature and how high temperatures go. If temperatures cool down or it gets rainy, then we may already have had our peak for this summer.”Apart from that she said it’s impossible to predict.The company has also published ‘Understanding Your Bill’ advertisements this month following changes to the information that appears on Belco bills.The facilities charge is now listed as a separate item on monthly bills. It was previously embedded in other costs on the bill.“When we listed the facilities charge, some customers called with questions, so we decided to do some advertising to inform all customers of the change,” said the spokeswoman.“We are now adapting the print ad to become a flyer and bill stuffer. Our aim is to communicate clearly with customers about all of the elements of their bill, so they understand what they are paying for.”