One axis tracking PV array with axis oriented south.

day. To get an estimate of the power output of the solar cell under actual site conditions, the following calculation is used to account for actual cell efficiency, available radiation, and PV configuration:


P = PV power output (in Watts per ft2 or m2) ^pv = Solar cell efficiency

Fig. 14-47b Single-Axis Tracking. Source: PV Watts, DoE/NREL

controlled environment and should only be used for comparison between solar cell models. In the actual site application, unlike laboratory conditions, the temperature, the angle of incidence between the sun's radiation and the surface of the solar cdl, and the amount of atmospheric Fig. 14-48 Output Load Shape of Fixed-Tilt and Tracking PV interference of one type or another changes throughout the Systems. Source: DoE/NREL

Renewable Energy 101

Renewable Energy 101

Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable. The usage of renewable energy sources is very important when considering the sustainability of the existing energy usage of the world. While there is currently an abundance of non-renewable energy sources, such as nuclear fuels, these energy sources are depleting. In addition to being a non-renewable supply, the non-renewable energy sources release emissions into the air, which has an adverse effect on the environment.

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