E

Utility-connected and off-utility grid power systems, namely, backup power generators; emergency power generators; renewable energy power generator systems, namely, wind turbines, photovoltaic panels, fuel cells, electrochemical cells, and combined heat and power systems, namely, electrical generators, internal combustion engines, external combustion engines, Sterling cycle engines, heat exchangers, and power converters; regenerative fuel cell systems and hydrogen generators

Installation of utility-connected and off-utility grid power systems, backup power generators, emergency power generators, renewable energy power generation systems, namely, wind turbines, photovoltaic panels, fuel cells,regenerative fuel cell systems and hydrogen generators

Design of utility-connected and off-utility grid power systems, backup power generators, emergency power generators, renewable energy power generation systems, namely, wind turbines, photovoltaic panels, fuel cells, regenerative fuel cell systems and hydrogen generators