Although union membership is not necessarily a requirement for employment, many workers in power plants are members of either the International Brotherhood of Electrical Workers or the Utility Workers Union of America. Union members traditionally have been paid better than nonunion members.
- Biofuels Processing Technicians
- Biofuels Production Managers
- Biofuels/Biodiesel Technology and Product Development Managers
- Biomass Plant Technicians
- Biomass Power Plant Managers
- Boilermakers and Mechanics
- Chemical Engineers
- Chemical Technicians
- Chemists
- Civil Engineers
- Coal Miners
- Divers and Diving Technicians
- Electricians
- Energy Brokers
- Energy Conservation Technicians
- Energy Consultants
- Energy Efficiency Engineers
- Energy Transmission and Distribution Workers
- Engineering Technicians
- Engineers
- Fuel Cell Engineers
- Fuel Cell Technicians
- Futurists
- Geodetic Surveyors
- Geological Technicians
- Geologists
- Geophysicists
- Geotechnical Engineers
- Geothermal Energy Industry Workers
- Geothermal Production Managers
- Geothermal Technicians
- Groundwater Professionals
- Hazardous Waste Management Specialists
- Hazardous Waste Management Technicians
- Hydroelectric Plant Technicians
- Hydroelectric Production Managers
- Hydropower and Marine Energy Industry Workers
- Industrial Engineering Technicians
- Industrial Radiographers
- Landmen
- Line Installers and Cable Splicers
- Materials Engineers
- Meter Readers, Utilities
- Methane/Landfill Gas Collection System Operators
- Methane/Landfill Gas Generation System Technicians
- Mining Engineers
- Non-Destructive Testing Specialists
- Nuclear Engineers
- Nuclear Reactor Operators and Technicians
- Petroleum Engineers
- Petroleum Technicians
- Physicists
- Plumbers and Pipefitters
- Radiation Protection Technicians
- Renewable Energy Careers
- Renewable Energy Engineers
- Roustabouts
- Solar Energy Sales Representatives
- Solar Thermal Installers and Technicians
- Surveying and Mapping Technicians
- Surveyors
- Telephone and PBX Installers and Repairers
- Traffic Engineers
- Wastewater Treatment Plant Operators and Technicians
- Water/Wastewater Engineers
- Wind Energy Engineers
- Wind Energy Operations Managers
- Wind Energy Project Managers