Solar energy relies on energy from the sun and is therefore both free and in unlimited supply. Solar energy can be used through passive solar technologies or active solar technologies.
Passive solar technologies do not rely on mechanical or electrical components and are heavily reliant on design features to capture and re-direct energy flows. This means that energy from the sun can be paired with building design and landscaping to make use of solar rays to heat rooms or buildings during winter months while keeping them cool during summer months.
Active solar heating, on the other hand, converts the sun’s energy into other forms of energy such as electric, mechanical or thermal energy. Solar photovoltaic (PV) cells convert sunlight into photons and in turn create an electric current, while solar hot water collectors capture and store heat in a water or antifreeze solution, then use a pumping network to redirect the heat throughout a structure or home.
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