PROJECT FOR A TRUE AMERICAN CENTURY
 
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MANIFESTO
FOR A
TRUE AMERICAN CENTURY

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Pax Americana?
 
ENERGY: A BACKGROUND BRIEFING
Almost all energy comes from fusion either directly or indirectly:
RENEWABLE
Sunlight Directly from fusion
Photovoltaic Directly from sunlight
Solar heating Directly from sunlight
Wind From solar heating
OTEC* From solar heating
Hydro From rain cycle driven by solar heating
Photosynthesis Directly from sunlight
Biomass From photosynthesis
*OTEC = Ocean Thermal Energy Conversion
NONRENEWABLE
Petrochemical From biomass
Coal From biomass
Nuclear Fission From end products of fusion
 
Exceptions:
  • Geothermal and Tidal

    Renewable resources do the least harm to the environment, but are not always available when and where we need them. We need ways to to store the energy we can get from renewable sources.

    For some applications we need storage as potential chemical energy. This can come in many forms, including:

  • batteries
  • gasoline or other combustible fuel
  • hydrogen for either fuel cells or combustion

    For other applications, we can use potential kinetic energy (e.g., water pumped up a hill to be released and come back down to run a turbine when needed).

    NOTE: Electricity is not a source of energy, it is a use of energy. Most of the electricity used in the U.S. comes from non-renewable fossil fuels (coal, natural gas and fuel oil).

    Also note that hydrogen is not a source of energy, but a way to store energy. Hydrogen can either be produced from hydrocarbons (mostly fossil fuels), or by using electricity to split it from water. In either case, it is not necessarily a clean alternative.

  • Almost all energy comes from fusion either directly or indirectly.

    2005 trueamericancentury.org