4
Electrical energy; electrical energy from renewable sources
7
Machines for generating electricity; recycling machines; electric power generators using geothermal power; uninterruptible power supplies [machines] for the generation of electrical energy; generators of electricity; turbines for power generation
9
Apparatus and instruments for controlling electricity; apparatus for improving power efficiency; energy control devices; energy regulators; electric power controllers; thermal energy measuring apparatus; electric power units; electric power supply units; apparatus and instruments for controlling the distribution of electricity; apparatus for diagnosing electrical power installations
11
Heat pumps for energy processing; heat pumps; industrial heaters; industrial heating apparatus; burners, boilers and heaters; heat pumps for energy processing
37
Installation of energy-saving apparatus; repair of energy supply installations; maintenance and repair of energy generating installations; installation of power generating apparatus; repair of energy production plants and machines; repair of power generating apparatus and installations; maintenance of power generating apparatus and installations; servicing of power generating apparatus and installations; construction of power plants
40
Energy production; recycling of heat; generation of power; consultancy services relating to the generation of electrical power; generation of electricity from geothermal energy; production of electrical power from renewable sources; generation of electrical power; electricity generating; energy production
42
Monitoring of network systems; monitoring of telecommunication signals; technical supervision and inspection; design and development of software for control, regulation and monitoring of solar energy systems; collection of information relating to the environment