40 Production of energy, in particular gas and electricity; generation of electricity from solar energy, gas processing services, purifying and refining services for gases, oils, diesel, steam, hot water and solar, wind and biomass energy; waste and waste gas recycling services; processing and treatment of waste by mechanical and chemical processes and waste classification; water treatment; contract manufacturing services in the field of photovoltaic apparatus and installations for generating solar electricity, photovoltaic apparatus for converting solar radiation to electrical energy, rechargeable batteries, solar batteries, solar panels for electricity generation, inverters, electricity limiters, transformers, photovoltaic inverters, solar cells for electricity generation, solar panel sets, photovoltaic solar panels, electronic sensors for measuring solar radiation, electricity metering devices, instruments for measuring electricity, solar energy accumulators for heating, solar powered lighting, solar heating apparatus, solar energy based cooling apparatus, solar water heaters, thermal solar collectors, solar furnaces, solar lamps, solar panels for heating, thermal solar panels, solar wafers, solar energy receivers, photovoltaic installation apparatus, namely, solar modules for production of electricity, solar thermal and electric receivers, tracking mechanisms and concentrating optics, and control algorithms; custom manufacturing of photovoltaic apparatus and installations for generating solar electricity, photovoltaic apparatus for converting solar radiation to electrical energy, rechargeable batteries, solar batteries, solar panels for electricity generation, inverters, electricity limiters, transformers, photovoltaic inverters, solar cells for electricity generation, solar panel sets, photovoltaic solar panels, electronic sensors for measuring solar radiation, electricity metering devices, instruments for measuring electricity, solar energy accumulators for heating, solar powered lighting, solar heating apparatus, solar energy based cooling apparatus, solar water heaters, thermal solar collectors, solar furnaces, solar lamps, solar panels for heating, thermal solar panels, solar wafers, solar energy receivers, photovoltaic installation apparatus, namely, solar modules for production of electricity, solar thermal and electric receivers, tracking mechanisms and concentrating optics, and control algorithms