Construction, installation, repair and maintenance services for electricity, gas and all types of energy distribution networks; assembly, installation, repair maintenance services for equipment of electricity, gas, gas pipelines, boilers, gas and electricity accessories and installations, heating, air-conditioning, ventilation and refrigeration apparatus; installation of solar heating systems; installation of solar energy systems; installation and maintenance of thermo-solar installations; underground construction services relating to pipes; management and supervision of works and building projects; underground civil engineering services; installation services for solar energy systems; 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; maintenance, repair and reconditioning services for photovoltaic installations and apparatus; maintenance and repair of thermo-solar installations; recharging service for batteries and accumulators; charging of vehicle batteries; recharging of electric vehicle batteries; vehicle service stations for refueling and maintenance; service stations for the maintenance of vehicles; installation services of photovoltaic cells and modules.;
Storage, transport and distribution services; distribution of energy; renewable energy distribution; information and advisory services relating to energy distribution; electricity transport, storage and distribution services; distribution, storage, supply and transportation services for all types of components for electrical installations; storage of water in tanks; water distribution and supply; water supply as public utility services; collection of waste water by public sewerage; waste water transport; water transport by pipeline; disposal [transport] of waste water.;
Scientific and technological services as well as research, appraisal, evaluation, reporting and design services relating thereto; technical projects; industrial analysis and research services; engineering services; professional consultancy services (not related to business management); water analysis; water quality control; technical design and planning of pipelines for gas, water and waste water; technical design and planning of water treatment plants; audits concerning energy; consultancy regarding energy-saving; consultancy concerning technological services in the field of power supply and electricity; development of energy and electricity management systems; scientific research in the field of energy; scientific research in the field of renewable energy; conducting research and technical project studies relating to the use of natural energy; technological consultancy services in the field of alternative energy generation.;