37 Repair, maintenance and troubleshooting of machines, systems and equipment for carbon capture, energy storage, energy generation and heat optimization, namely, carbon dioxide absorption scrubbers for filtering exhaust gases, batteries and flywheels for storing energy from renewable power generation sources, photovoltaic (PV) panels, inverters, wind turbines, and biomass powered turbines, other than for land vehicles, heat pumps and compressors for heat recovery, and electric power generators using waste heat; Construction services, namely, installation of carbon capture, energy storage, energy generation and heat optimization machines, systems and equipment, namely, carbon dioxide absorption scrubbers for filtering exhaust gases, batteries and flywheels for storing energy from renewable power generation sources, photovoltaic (PV) panels, inverters, wind turbines, and biomass powered turbines, other than for land vehicles, heat pumps and compressors for heat recovery, and electric power generators using waste heat; Maintaining of industrial machinery, namely, carbon dioxide absorption scrubbers for filtering exhaust gases, batteries and flywheels for storing energy from renewable power generation sources, photovoltaic (PV) panels, inverters, wind turbines, and biomass powered turbines, other than for land vehicles, heat pumps and compressors for heat recovery, and electric power generators using waste heat