These already exist, combined heat and power (CHP). You can buy packaged units that come pre-assembled on a skid. These typically generate steam which either he

These already exist, combined heat and power (CHP). You can buy packaged units that come pre-assembled on a skid. These typically generate steam which either heats directly using radiators/heat exchangers or spins a steam turbine chiller for cooling. https://www.epa.gov/chp/what-chp https://www.epa.gov/chp/what-chp That being said, I’d much rather leave electricity generation to a utility, maintaining generators is expensive and you’re screwed if your primary generator goes down without utility backup power or a secondary backup generator.