Solar power is a renewable energy source that harnesses solar power to produce electricity.
One downside of solar power systems is their limited operation during times of sun light; this necessitates storage to support their functioning. Moreover, they may be expensive, but there are several financing options.
Photovoltaic cells
Scientists at NREL, among others, are working to improve photovoltaic cells to make them more efficient, less expensive and easier to manufacture.
Each PV cell is made of thin semiconductor materials that have been treated in order to create an electrical field. One side has a positive charge, and the other a negative one. When sunlight strikes the cell, it energizes its semiconductor material. This releases electrons that flow through it and connect via metal plates to form direct-current electricity.
PV cells generate electricity that can either power electronics directly, or sold to the electric grid through an inverter that converts DC current to AC electricity. A battery may also be used as storage medium, though for optimal functioning it needs an appropriate charge controller in place to prevent overcharging or discharging too quickly.
Concentrated solar power plants
Concentrated solar power technology uses mirrors to capture and reflect the sun’s rays, then converts that energy into heat via a receiver tube and uses it to turn a turbine and generator for electricity production, similar to how nuclear fission and fossil fuel plants operate.
Power tower and linear systems both utilize mirrors to direct sunlight onto a central receiver, while parabolic trough systems use similar principles but in a U-shaped configuration; smaller systems may also be built depending on local needs.
CSP is a good option because it can be used on cloudy days and its electricity can be stored. CSP offers an attractive alternative because its electricity can even be used on cloudy or rainy days. Some systems use steam to power an Organic Rankine Cycle system.
Solar panels
Solar panels convert sunlight into electricity and are often installed on rooftops or in open areas. Solar energy is a renewable resource; therefore it will never run out! Solar panels can be maintained by regular cleanings.
Solar power systems can last up to 30 years and are a great investment for homeowners. They are not only more affordable than traditional electric systems, but they also reduce energy bills and are more environmentally friendly.
Solar energy offers an environmental-friendly alternative to fossil fuels; however, its production does not come without drawbacks. Solar panels require raw materials that may not always be readily available, which mining them may have an environmental impact. Solar panels are also affected by weather conditions. They perform less efficiently on cloudy days or in winter. Their best performance is closer to the equator.
Storage
Solar technology enables us to tap the sun’s radiant energy for electricity or heat generation, creating energy efficiency within homes while providing electricity to grid after dark and even storing energy for use during cloudy days.
Solar energy is a sustainable resource with an endless supply, unlike fossil fuels. Solar energy can be produced at large scales to power cities and communities, or as a supplement to other renewable energies such as wind power.
Solar power is a vital part of the US electricity system, which helps to transition towards a greener economy. SEIA strives to support the expansion of solar power at all levels, including local, state, and federal. This allows consumers and businesses to benefit from this reliable and sustainable energy source.