1. hybrid gasoline-electric vehicles- high effucuency rating and lowest emmissions in u.s
2. net energy yield-based on the total useful energy produced during the lifetime of an entire system minus the energy required to make useful energy availbable.
3.cogeneration-the simultaneous production of both electricy abd steam or hot water in the same plant.
4.passive solar absorption-using materials or absorptive structures with no moving parts to simply gather and hold heat.
5. active solar system- generally pump a heat-absorbing fulid through a relaitvely small collector rather than passively collecting heat in a stationary meduim like masonry.
6.photoviktaic cells- capture solar energy and convert it dirctly to electrical current by seoeratuing electrons from their parents atoms
7.fuel cell- devices that use ongoing electrochemical reactions to produce an electric current.
8.reformer- convert that strips hydrogen from fuels such as natural gas etc.
9.biofuel-a mixture of gasoline and ethanol.
10. low head hydropower- techonology can extract energy from small head water dams that cause much less damange than larger projects.
11. run of the river flow-high effiency turbines that can opperate in submerged directly into the stream and small enough not to impead navigation.
12. micro-hydro genertors- small enough to provide economical power in a single hour.
13. geothermal energy- energy source where baths built in hot springs.
14. tidal station- works like a hydropower dam which its turbines spinning as the tide flows through them.
15. OTEC- heat from sun warmed upper ocean layers is used to evaportae a working fuld which has a low bouling point
16. green pricing- allows utitlies to profit from cobservation programs and chrage preimum preices for energy.
