"Excess electricity" refers to the extra or surplus electrical power that is generated beyond what is needed or used at a particular time. Full definition
These bricks could help store excess electricity stored by clean energy installations, making them more profitable. (treehugger.com)
This system offsets the usage on site while selling excess electricity back to the utility company. (energysage.com)
In other words, avoid using gas by missing traffic, avoid using excess electricity by turning your lights off remotely, avoid waste by buying used goods. (treehugger.com)