Construction services, namely, construction, installation, repair and maintenance of distribution networks and pipelines for gas and all types of energy; installation, repair and maintenance of gas installations, gas pipelines, boilers, gas and electricity accessories and installations, heating apparatus, air conditioning, ventilating and cooling systems, installation of solar heating systems; installation of solar energy systems; installation and maintenance of thermal solar installations; construction of underground pipe networks; management and supervision of works and building projects; underground civil engineering services; solar energy installation services; underwater repair and installation services; construction of structures for the storage of natural gas and crude oil; construction of structures for the production and transport of natural gas and crude oil; drilling services for the extraction of oil and gas; repair services for gas supply systems; mining and oil and gas extraction services; underground construction services relating to gas networks and supply lines

Transport, storage and distribution services for gas, electricity, water and all types of energy, as well as distribution, storage, supply and transport services for all types of components for gas and electric installations

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