REI: RENEW Energy Initiative

Energy Source and Energy Saving Options

-- the REI Team  (Published: 2010-11-17.Edited: 2011-01-5, 2011-02-27, 2013-02-7)


  • Sources (alternative ways of providing/generating energy)
    • Advanced Batteries
    • Air Source Heat Pumps
      • Space heating
      • Domestic hot water heating
    • Anaerobic Digestion
    • Biofuels (fuels produced from recently living matter, including biological wastes)
      • Biogas (gaseous biofuels, usually methane, often from anaerobic digestion)
      • Biofuel (this term is also used to refer to liquid biofuels such as biodiesel or ethanol)
      • Biomass (solid biofuels such as firewood and wood pellets)
    • Concentrating Solar Power (CSP)
    • Flywheel (electricity) Storage
    • Fuel Cells
    • Geothermal Power (also called Geothermal Energy)

    Nesjavellir PowerPlant
    (picture: Nesjavellir Geothermal PowerPlant. Courtesy of Gretar Ívarsson)

    • Geothermal Exchange Heating & Cooling
    • Hydrokinetic Power
      • Micro and Mini Hydroelectric Power
      • Ocean Kinetic Energy
        • Tidal Energy
        • Wave Energy
    • Hydrogen Fuel
    • Nuclear Energy
      • Cold Fusion (great concept; never validated)
      • Small Fission Reactors
    • Ocean Kinetic Energy - See Hydrokinetic Power, above
    • Ocean Thermal Energy Conversion (OTEC)
    • Solar Electromagnetic (this is a “new” way of converting solar energy into electricity, and is in development)
    • Solar Photovoltaic (PV) Power
    • Solar Thermal Electric Power – See Concentrating Solar Power
    • Solar Thermal Heating
      • Space
      • Domestic Hot Water
      • Swimming pools
    • Solar Hybrid
      • Solar PV + Solar Thermal Heating
      • Solar PV + Concentrating Solar Power
      • Combined organic and inorganic Solar PV generation
    • Thermoelectricity
    • Waste, Fuel Extraction from (see Anaerobic Digestion)
    • Wind Power Generation
  • Savings (improving energy use efficiency)
    • Area Radiant Heating (under floor heating)
    • Combined Heat and Power (CHP)
      • Natural gas co-generator
      • Natural gas fuel cells
    • Cogeneration - see Combined Heat and Power, above
    • Compact Fluorescent Lights
    • Cool Roofs / Green Roofs (reduces solar heat generation on a roof)
    • Electricity Phase Loss Reduction
    • Energy Audit (doesn’t directly save, but an important step to optimizing energy savings and alternative energy benefits)
    • Friction Reduction
    • Heat Flow Reduction (unwanted hot weather heating or cold weather cooling of a building interior)
      • Energy / Heat Recovery Ventilation (ERV / HRV)
      • Insulation
      • Air Sealing - preventing/reducing airflow between a building and the outdoors
    • High Efficiency Furnaces
    • Hybrid / Electric Vehicles
    • Integrative design - designing a building to optimize its energy efficiency
    • LED (Light Emitting Diode) Lighting
    • Managed/Optimized Electricity Usage
    • Oil-to-Gas Conversion (principally to reduce foreign dependencies)
    • Passive Heating and Cooling - designing a building to naturally provide much or all internal heating and cooling
    • Plug-in Electric Vehicles - see Hybrid / Electric Vehicles, above
    • Smart Grid, The