Device for predicting amount of photovoltaic power generation, and method for predicting amount of photovoltaic power generation

摘要

An actual power generation amount receiver acquires an actual power generation amount of a photovoltaic power generation system of each time slot of each day. An extraterrestrial solar radiation calculator calculates an extraterrestrial solar radiation of each time slot of each day at a disposition position. A weather information receiver acquires an actual weather record of each time slot of each day and a weather forecast of a prediction target time slot. A similar date extractor classifies a time slot, which is the same as a prediction target time slot of each day in a search range in which an actual power generation amount is acquired, as a similar time slot for each actual weather record type. A prediction formula deriver derives a power generation amount prediction formula for calculating a predicted power generation amount based on an actual power generation amount.