Comment by sbierwagen

>Micro combined heat and power is an extension of the idea of cogeneration to the single/multi family home or small office building in the range of up to 50 kW.[1] Usual technologies for the production of heat and power in one common process are e.g. internal combustion engines, micro gas turbines, stirling engines or fuel cells.

https://en.wikipedia.org/wiki/Micro_combined_heat_and_power

Unfortunately, looks like the smallest CHP unit Dalkia Aegis will sell you in the United States is the Yanmar CP35, which does 204,040 BTU/h. https://aegischp.com/products/product-comparison/