Services
- Energy brokers, gas
- District heating and hot water supply operators
- Steam supply services, industrial use
- Natural gas supply services for domestic use
- Natural gas supply services for industrial use
- Town gas supply services
- Methane supply services, vehicle traction
- Liquefied gas supply services
- Refilling and re-testing services for gas bottles
- Distributors of liquefied petroleum gases (LPG)
- Bottling, storage and transport services for liquefied gases
- Producers of biogas
- Compressed air supply services, industrial use