01
Hydrogen; liquified gases, other than for medical use; gases
for industrial purposes; rare gases other than for medical
use; gases for industrial purposes; gas in liquid form for
industrial use; gases for industrial purposes; gases for
industrial purposes; gases for use in agriculture; gases for
use in forestry; gases for use in horticulture; gases for
use as blowing agents; solidified gases for industrial
purposes; inert gases, other than for medical use
04
Solidified gases [fuel]; synthetic gas [fuel]; gas for
lighting; fuel gas; liquefied petroleum gases to be used for
domestic purposes; liquefied gases for driving motor
vehicles; liquefied petroleum gases to be used in motor
vehicles; liquefied petroleum gases to be used for
industrial purposes; liquefied gas; electrical energy from
wind power; electrical energy from solar power; electrical
energy from non-renewable sources; electrical energy from
renewable sources; electrical energy; butane gas for use as
a fuel; solidified gases [fuel]; fuel gas
09
Electrolysers [electrolytic cells]; electrolysers; fuel
cells; apparatus and instruments for the storage, conducting
and conversion of energy, in particular electrical current
37
Maintenance and repair of oil and gas storage installations;
pipe laying; pipeline laying; installation of gas and water
pipelines; repair of gas supply systems; maintenance and
repair of gas and electricity installations; plumbing and
installation of gas and water pipelines; servicing of
pipelines; pipeline maintenance; installation of pipe
systems for conducting of gases; installation of gas supply
and distribution apparatus; pipeline installation and
repair; pipeline construction and maintenance; construction
of structures for the transportation of natural gas;
construction of structures for the storage of natural gas;
power infrastructure construction; construction of
structures for the production of natural gas; gas drilling;
fueling of hydrogen gas for vehicles; natural gas refuelling
service for motor vehicles; installation of gas pipelines;
building, installation, construction, servicing, maintenance
and repair of gas supply systems, gas pipeline networks and
installations for the electrolysis of water in hydrogen by
means of electricity and conversion of hydrogen using carbon
dioxide in synthetic methane; construction, installation,
assembly, maintenance and repair of energy installations;
building, installation, assembly and repair of gas
technology and environmental installations and of apparatus
for the production, cleaning, liquefying and revaporisation
of technical gases, in particular hydrogen and gas hydrogen
mixtures
39
Distribution of gas; transmission of oil or gas through
pipelines; transport of natural gas; transport of fuels by
pipeline; transport and distribution of natural gas and
liquefied gas; transport by pipeline; storage of energy and
fuels; public utility services in the nature of natural gas
distribution; gas storage services; storage of gaseous
fuels; gas storage services; distribution of gas; pipeline
transport of gases; pipeline transport of gases; gas
supplying [distribution]
40
Electricity generating; generation of electricity from wind
energy; generation of electricity from solar energy;
production of electrical power from renewable sources;
electricity generating; gas production services; generation
of gas and electricity; gas production services; electricity
generating; electricity generating; treatment of materials,
in particular conversion of electricity into gas and
conversion of gas into electricity; hydrogen, biogas and bio
natural gas production
42
Pipeline inspection services; energy auditing; technological
consultancy in the fields of energy production and use;
technological consulting services in the field of
alternative energy generation; technical design and planning
of pipelines for gas, water and waste water; technical
advice in connection with energy-saving measures;
technological analysis relating to energy and power needs of
others; engineering services in the field of electrical
power and natural gas production; engineering services
relating to energy supply systems; engineering services in
the field of energy technology; engineering services
relating to gas transport and supply systems; engineering
services for the gas industry; research in the field of
energy; providing technical advice relating to energy-saving
measures; professional consultancy relating to energy
efficiency in buildings; professional consultancy relating
to the conservation of energy; design of pipelines; design
and development of regenerative energy generation systems;
design and development of energy management software;
development of energy and power management systems;
conducting research and technical project studies relating
to the use of natural energy; provision of information
concerning research and technical project studies relating
to the use of natural energy; consultancy relating to
technological services in the field of power and energy
supply; advisory services relating to energy efficiency;
advisory services relating to the use of energy; consultancy
in the field of energy-saving
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