What happens if your reading is estimated incorrectly?
From April 1, 2013 onwards, and in application of that set forth in Royal Decree 1718/2012, December 28th, billing for all contracted low voltage energy supplies of no more than 15kW, will be bi-monthly and with actual readings. In this way, estimates regarding consumption on your bill will be eliminated.
However, if for some reason we have been unable to bill you using real readings, and we have calculated your reading incorrectly, there's no need to worry. The difference between real readings and estimated readings is regularized in the subsequent bills, at no additional cost to the customer.