7 Heat pumps.
9 Batteries and accumulators, electricity, gas and heat meters and safety devices.
11 Solar installations and solar cells.
37 Laying of gas pipes and power lines, and of long-distance heating conduits; gas, long-distance heating and electric installation; installation, maintenance and repair of gas pipes, power lines and long-distance heating conduits, gas, long-distance heating and electric installations and meters, heating, water heating and cooking installations running on gas, electricity and long-distance heating, as well as gas and electric filling stations; maintenance and repair of gas containers, gas tanks and gas heating boilers, maintenance, repair of batteries, electric charging apparatus and electric motors and engines; installation, maintenance and repair of solar installations, solar cells and heat pumps (including in connection with heating installations as well as drives for machines and apparatus).
39 Supply of electricity and long-distance heating; collection of batteries; operation of gas filling stations and electric recharging stations; transportation and supply of gas and electricity.
42 Research, development, inspection and testing in the field of gas and gas firing technology, gas analysis, gas drilling and the field of generating and piping long-distance heating and electricity and the apparatus and installations therefor; research, development, inspection and testing in the field of solar energy, in particular solar cells, solar installations and heat pumps and all installations running on solar energy; testing of gas containers, gas tanks, gas apparatus and gas installations; energy consultancy in connection with solar energy, gas, firing and electricity; engineering offices for gas pipes, power lines and long-distance heating conduits and installations and for solar energy; operation of gas filling stations and electric recharging stations.