In engineering, it pretty common to calculate things over a 1 year period in order to relate cost calculations to company finances. Most companies calculate their finances annually, so calculating for yearly average energy production makes any comparison easier than other arbitrary periods of time.
In engineering, it pretty common to calculate things over a 1 year period in order to relate cost calculations to company finances. Most companies calculate their finances annually, so calculating for yearly average energy production makes any comparison easier than other arbitrary periods of time.