IPC: Is the real accumulated value, from the period from November to November prior to the application of the variation, of the general Consumer Price Index, published by the National Institute of Statistics. One month before the renewal of the contract for these promotions, the new price conditions will be reported for the next billing.All promotions are exclusive for online contracting with Compañía Lumisa Energías S.L.To benefit from these promotions it is essential to enter the promotional code in the online contracting form. The rest of the conditions, as well as in relation to data protection, must be considered in their entirety those developed on our website.