PVsell accurately calculates every part of your annual savings. Consumption changes with the hour, month, and season; tariffs often vary with the time of day and day of week…. Then there’s peak demand. Most salespeople use simplifying assumptions that overstate financial benefit (exposing their company to litigation) – assumptions that assume that solar never exports and always attracts peak tariff. Then there’s peak demand, which is where most get it wrong. All of these are accurately calculated within PVsell, with little effort required from you. PVsell provides you with a library of typical consumption profiles and Time-of-use tariff types (and allowing you to upload your own), which ensures your annual savings figure is far more accurate than a guesstimate.