"Electricity usage" refers to the amount of electricity that is used or consumed by people or devices. It is a measure of how much electricity is being used in a given period of time, such as in a home, office, or an entire country. Full definition
That translates into 340 pounds of CO2 emissions per person per month from electricity usage. (treehugger.com)
So cooling off the roof with a green roof, supplementing electricity usage with solar panels or wind power or using natural light in favor of running lights 24/7 can add up over time. (treehugger.com)
The article referred to a brief moment when renewables accounted for 87 % of the total electricity usage. (ddears.com)