Key:generator:output:* - OpenStreetMap Wiki
Power generators can output multiple forms of energy. For example, a boiler will only output hot water, but a combined heat and power plant will typically output hot water and electricity. Add as many values as are relevant.
If the rating of the output is known, add a numerical value followed by the unit. Otherwise simply add 'yes'.
generator:output:electricity=*
yes / x W / x kW / x MW / x GW
generator:output:heat=*
yes / x W / x kW / x MW / x GW
generator:output:hot_water=*
yes / x W / x kW / x MW / x GW
generator:output:hot_air=*
yes / x W / x kW / x MW / x GW
generator:output:cold_water=*
yes / x W / x kW / x MW / x GW
generator:output:cold_air=*
yes / x W / x kW / x MW / x GW
generator:output:compressed_air=*
yes / x W / x kW / x MW / x GW
generator:output:steam=*
yes / x W / x kW / x MW / x GW
generator:output:vacuum=*
yes / x W / x kW / x MW / x GW
generator:output:biogas=*
yes / x W / x kW / x MW / x GW
generator:output:hydrogen=*
yes / x W / x kW / x MW / x GW