Links in this category of editors choices cover some of these topics:
energy, renewable, solar, thermal, wind, biomass, photovoltaic, cogeneration, sustainable, use, coal, electricity, petroleum, natural gas

• Sustainable Energy Development Authority (SEDA) [nsw]
  • reduce greenhouse emissions, sustainable energy technology, renewable, cogeneration, rating, accreditation, efficiency
• Commonwealth Scientific and Industrial Research Organisation (CSIRO) [aus]
• Permaculture Research Institute [aus]
• CSIRO Energy Technology [aus]
• Institute for Sustainable Futures (ISF) [aus]
• Australian Greenhouse Office (AGO) [aus]
  • abate greenhouse gas emissions, Greenhouse Challenge, cooperative agreements with industry
• Greenpeace Australia [aus]
• Greenpeace New Zealand [nz]
• Australian Nuclear Science and Technology Organisation (ANSTO) [aus]
  • rehabilitate uranium mines, assess environmental impact, modelling geochemical processes, describe ground water movement, waste treatment
• Agriculture, Fisheries, and Forestry - Australia (AFFA) [aus]
• Energy Efficiency and Conservation Authority (EECA) [nz]
• Michael Mobbs' Sustainable House [aus]
  • grey water recycling, surplus solar energy fed back to grid, no waste water, Sydney's sustainable house at Chippendale
• Australian Renewable Energy Website [aus]
• Wool Store Insulation [aus]
  • woolbatts, Australian wool insulation, sheep wool

Region codes [aus, nz, ant, ...] indicate the state or country that each site is relevant to.