Let's start with solar cells, to DC. E 'is used to turn electric motors cost of a converter used to convert DC to 60 cycle AC voltage 220/127. If the sun is not for the day, a series of faces, and not short-term storage of batteries, if necessary. The surface is necessarioper produce large amounts of kilowatts. Dede Metropole High density of buildings no land for the installation of solar panels. Then there is the energy return on energy invested (see www.eroei.com.
Hydrogen, as currently required considerable investment in infrastructure (production, storage, transport and services in the near future) you can in the line too far in the future. Lawrence Livermore Laboratory million spent over the years to develop a cell dernièress hydrogen instead of zinc. This cell is already at the Planungrams of research and by a small company. With a strong and secure framework can be a viable approach for small hybrid cars a reality. There was no bomb.
Ethanol from sugercane / beet or maize Montre already has a lot of problems. Refined products, will be eligible to travailpar from the refinery through pipelines to end users. Trucks qualified pilots (but hazardous materials), or the tank must be used. This offer and Demand has already sientanción the price of E75 fuel, a few cents for regular gasoline, according to the discussion of Bill C-Span recently
Biomass is not enough to dent. Technology ala his childhood.
Wind Power: Requires large turbines àcomme. Success in some areas, with an average high winds. Too expensive for the type of household (a house on a few hectares terren
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