Historically, the electric power industry has been dominated by large central generation stations that use energy transmission and energy distribution services to deliver power. In turn, customers have been charged an average price for power, paying for consumption volume while ignoring its timing. Since increased demand reflected economic growth, pricing tended to promote electric consumption as long as reliability and peak demand were satisfied. This enabled the electric power industry to increase capacity to meet demand growth and prospering economies. This "load chasing," saw-tooth strategy of building excess supply capacity and allowing demand to catch up over time has worked until now. Read more.