Electricity bill savings and the role of energy efficiency improvements: A case study of residential solar adopters in the USA

摘要

This study measures the actual value of electricity bill savings for residential solar adopters and examines how decisions related to the timing and type of energy-efficiency improvements affect a solar adopter's electricity bill savings. Among different types of efficiency upgrades, solar adopters with an efficient heating/cooling system and efficient lighting have higher savings than those without. Among solar adopters who made certain efficiency improvements, those who upgraded efficiency a few months before or after installing solar panels have higher savings than those who upgraded over three years before installing solar panels.