Tidal power is a means of electricity generation achieved by capturing the energy contained in moving water mass due to tides. Two types of tidal energy can be extracted: kinetic energy of currents between ebbing and surging tides and potential energy from the difference in height (or head) between high and low tides. The former method - generating energy from tidal currents - is considered much more feasible today than building ocean-based dams or barrages. For more information please click here.

Water power harnesses the energy of moving or falling water. This is usually in the form of hydroelectricity from a dam, but it can be used directly as a mechanical force. The term refers to a number of systems in which flowing water drives a hydraulic turbine or waterwheel. For more information click here

Biomass is sometimes burned as fuel for cooking and to produce electricity and heat. This is called Biofuel. Biomass used as fuel often consists of underutilized types, like chaff and animal waste. This is considered a type of alternative energy.

Biogas, also called digester gas, typically refers to methane produced by the fermentation of organic matter including manure, wastewater sludge, municipal solid waste, or any other biodegradable feedstock, under anaerobic conditions.The use of biogas is encouraged in waste management because it does not increase the amount of carbon dioxide in the atmosphere, which is responsible for much of the greenhouse effect, if the biomass it is fueled on is regrown. For more information click here.

The term solar power is used to describe a number of methods of harnessing energy from the light of the Sun. It has been present in many traditional building methods for centuries, but has become of increasing interest in developed countries as the environmental costs and limited supply of other power sources such as fossil fuels are realized. For more information click here

Wind power refers to the extraction of useful energy from the wind. In 2005, worldwide capacity of wind-powered generators was 58,982 MW, their production making up less than 1% of world-wide electricity use. Wind energy is abundant, inexhaustible, widely distributed, clean, and mitigates the greenhouse effect. For more information click here

There are some common elements of new urbanist design. New urbanist neighborhoods are walkable, and are designed to contain a diverse range of housing and jobs. New urbanists support regional planning for open space, appropriate architecture and planning, and the balanced development of jobs and housing. They believe these strategies are the best way to reduce the time people spend in traffic, to increase the supply of affordable housing, and to rein in urban sprawl. For more information on New Sub Urbanism click here.

Energy storage is the storing of some form of energy that can be drawn upon at a later time to perform some useful operation. As a purposeful activity, energy storage has certainly existed since pre-history, though it was often not recognized as such. Energy storage only became a major concern, however, with the introduction of electricity. Unlike the other common power sources at the time, such as natural gas, electricity had to be used as it was generated. This meant that changes in demand were difficult to cater for without either cutting supplies at times, or having expensive excess capacity. For more on Energy storage click here