Narrower Terms (14)

• Biogas industry
• ▶ Biomass energy industries
• Clean energy industries
• ▶ Coal mines and mining
• ▶ Electric utilities
• Energy conservation equipment industry
• Energy storage equipment industry
• ▶ Fuel trade
• ▶ Gas industry
• Nuclear industry
• ▶ Petroleum industry and trade
• ▶ Solar energy industries
• Tidal power industry
• Wind power industry