4
Electrical energy; Electrical energy from renewable sources; Industrial oil; Fuel oil
7
Power installations [generators]; Current generators; Turbines for power generation; Power transmission parts [other than for land vehicles]
35
Energy price comparison services; Procurement of contracts concerning energy supply; Assistance and consultancy services in the field of business management of companies in the energy sector
36
Financial consultancy in the energy sector; Consultancy concerning financing of energy projects; Brokerage of financial investments in energy companies; Financial services provided to businesses in the oil industry; Financial evaluation of development costs relating to the oil and gas industries; Derivatives trading services
37
Extraction of oil; Oil and gas drilling; Oil pipeline laying; Oil-field exploitation for the extraction of oil; Oil pipeline construction; Construction of oil and gas storage installations; Construction of structures for the transportation crude oil; Installation of oil refineries; Installation of oil pipelines; Installation of oil production apparatus; Installation of oil exploration instruments; Rental of oil well drilling tools; Repair of energy supply installations; Installation of wind power systems; Construction of wind power plants; Installation, repair and maintenance of wind turbines, solar power systems, Water power plants and other power plants for renewable energy; Installation of solar powered systems; Installation and maintenance of carbon dioxide capture systems
39
Distribution of energy; Storage of energy and fuels; Information and advisory services in relation to the distribution of energy; Oil distribution services; Storage of fuel oil; Transportation of crude oil; Transportation of heavy fuel-oil; Oil bunkering services [storage]; Transmission of oil or gas through pipelines
40
Energy production; Generation of energy; Refining of oil; Processing of gas and oil; Refining of petroleum products; Fuel refining; Refining of gas; Processing of hydrocarbon derivatives; Rental of equipment for the treatment and transformation of materials, for energy production and for custom manufacturing; Generation of electrical power using carbon sequestration; Production of electrical power from renewable sources
42
Research in the field of energy; Engineering services in the field of energy technology; Advisory services relating to the use of energy; Design and development of regenerative energy generation systems; Exploration and searching of oil and gas; Oil prospecting; Oil-field surveys; Oil-field surveys; Analysis of oil reservoirs; Analysis and testing for oil workings; Geophysical exploration for the oil and gas industries; Assaying oils; Oil well logging and testing; Technical consultancy for the hydrocarbon-oil refinery industry; Development of energy and power management systems; technological consulting services in the field of alternative energy and renewable energy generation