2136 水力: water power, hydraulic power: This island relies on hydraulic power to generate electricity. 2404 電力: electric power, electricity: This air conditioner doesn't use much electricity. 3362 動力: power, engine: This car is powered by electricity. 3432 発電: generation of electricity: We generate electricity with solar energy here. 4064 節約: saving, thrift: Let's save electricity and water. 4256 供給: supply, provision: His company supplies electricity.