Group 27!(:

The way naturalight works

Fossil fuels  Fossil fuels are fuels formed by natural processes such as anaerobic decomposition of buried dead organisms  Fossil fuels contain carbon, coal, petroleum, natural gas  Fossil fuels are non-renewable resources because they take millions of years to form

 Solar Thermal  Passive Solar  Wind Energy  Photovoltaic

Pro: Sustainable Low cost Well suited to providing power in home or single building applications Available all over the world Well proven technology Non- polluting Tax incentives Low maintenance Con: Less energy on cloudy days, higher latitudes No energy at night Negative aesthetics Large power plants are land intensive Negative aesthetics

Pro: Sustainable Non-polluting Energy source is perpetual Low maintenance cost Well proven technology Con: Unreliable and its strength depends on local weather patterns, temperature, time of year and location. Equipment is very expensive compared to other energy sources. Initial expense is high Can have a negative impact on aesthetics Lack of highly specialized maintenance personal

Photovoltaic Panals Pro: Sustainable Well suited to providing power in home or single building applications Available all over the world Well proven technology Non-polluting Tax incentives Low maintenance Con: Can take a large area to produce the energy needed More expensive at the current time Less energy on cloudy days, higher latitudes No energy at night An energy storage device is required Negative aesthetics

 Pro:  Sustainable  Non-polluting  Save on energy use  Zero/ low maintenance cost depending on design  Natural lighting  More consistent heating and cooling  Con:  Can have an increase on building costs  Dependent on site suitability, in most cases some degree of passive design can be applied