$> 94.5\%$ Reduction in Grid-Buy Electricity and Elimination of AM & PM Energy Peaks/Spikes by Optimizing Energy Usage and Integration of Customer Self-Supply Rooftop Solar PV with Electrical & Thermal (Hot & Cold) Storage Batteries: A Case Study for Residential Hawaii

We investigated the integration of customer self-supply rooftop solar PV system with electrical battery storage and hot & cold thermal storage for residential Hawaii. Optimizing time of use for key appliances and improvements to hardware and software control system, we reduced the average daily Grid-Buy from 48.7kWh/day in April 2016 to 2.7kWh/day in April 2017 and eliminated all AM and PM energy peaks. For 12 days in April we achieved 0.0kWh/day Grid-Buy.