Insolation, incoming solar radiation, at the upper atmosphere of the earth is 174 petawatts, which is 174, 000, 000, 000, 000, 000 (17415) watts of raw power. Out of this, one third is reflected back and the balance is absorbed by the land masses...

Improvements in energy efficiency usually means a reduction in the energy used for a given service like cooling, heating, lighting, water supply, etc. This can be achieved through change of technology, change of fuels, better organisation of the process...

You can call something more energy efficient if it gives more services for the same input of energy, or gives the same services for input of less energy. A CFL bulb is considered more energy efficient than an incandescent...

Substantial technological development is necessary for new renewable energy sources to become competitive with existing generator technology. Costs of generation of electricity from wind, solar, and geothermal energy and the maintenance...

We all want a world with enough sustainable energy for all of mankind without the least harmful impact on the environment. Why not begin at home? When your home is sustainable and environment-friendly in every other way, why should you...

The basic principles of solar dwellings are applicable to buildings other than residential. The south-facing (north-facing in the southern hemisphere) windows that are properly oriented for collection of solar energy, he brick walls...

Power producing agencies need a lot of active solar energy at a cost that should be lower, at least in the long run, than conventional fossil fuel energy. Technical advances and scientific research in the field of active solar energy systems have made this possible now...

The Governments, in responsible democracies or otherwise, are duty bound to produce and distribute at affordable prices, enough energy for the basic needs of the people they govern. Just like roads and transportation, food and water and defence of the country...

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