Biomass & Biofuel (',Renewable)	Carbon Capture & Storage (',CCS) Technologies	Carbon Emission Trading Companies	Clean Energy Venture Capitalists
District Heating Providers	Energy Auditing & Assessment Services	Energy Commodities Trading	Energy Efficiency Consultants
Energy Efficiency Technologies	Energy Futures & Derivatives	Energy Storage Solutions (',e.g., Battery Storage)	Firewood
Geothermal Energy (',Renewable)	Hydrogen Energy (',Renewable)	Hydropower (',Water Energy - Renewable)	Misc. Energy & Alternative Resources
Natural Gas Distribution	Oil & Gas Exploration	Oil Distribution	Oilfield Services
Outdoor Furnaces (',for livestock barns)	Petroleum Refining & Distribution	Propane Distribution	Renewable Energy Investment Firms
Solar Energy (',Renewable)	Tidal & Wave Energy (',Renewable)	Wind Energy (',Renewable)