Disadvantages Of Solar Energy
There are several problems with the more popular choices for harnessing energy [non-renewable energy]. This section will discuss the concerns that need to be taken into consideration when deciding whether or not to use solar energy as an alternative solution to fossil fuels such as coal, petroleum, natural gas and nuclear energy for our energy consumption.
2.1 Impact on resources
Many non-renewable resources are being extracted to the point of exhaustion without any consideration to the fact that these fossil fuels may not restore themselves in this century or at all. Coal, which is thought to be the most widely available resource, is estimated to last no longer than 50 years (Morse, 2013). This could have …show more content…
Some power plants use radioactive materials that have horrible side effects if there is any exposure to the materials. Exposure can cause birth defects as well cause other bodily organs to function irregularly. All the aforementioned concerns also tie in with many health concerns. For example, individuals that work in the mining industry to extract these minerals often suffer from lung disease or worse, cancer (Rlombardo, 2015).
3 Solar energy as an alternative
Solar energy is a renewable energy source which can be used instead of non-renewable energy sources to prevent the problems which come from using non-renewable energy. The following sections will go over how solar energy can be used to address the problem, the process of using solar energy, and the workings of photovoltaic cells.
3.1 Solar energy is a renewable energy source
Solar panels are able to create electricity from the sun’s rays which is why it is a renewable energy source. Using solar energy instead of typical non-renewable energy such as fossil fuels prevents the burning of fossil fuels which pollutes the environment bringing harm to the Earth and people. There are no harmful by-products that are produced from using solar …show more content…
Solar systems use photovoltaic (PV) cells to convert sunlight into electricity. The top layer of the cell is glass which is used to prevent damage from weather. Beneath the glass is an anti-reflective coating, this coating is used to maximise light absorption. Under the coating are a positive charged (p-type) and a negative charged (n-type) semiconductor layer (Mogan, 2016). When the n-type layer absorbs enough photons from the sun it causes electrons to come loose from the n-type layer and shift to the p-type layer (Mogan, 2016). The electron shifting in between the layers produces a current. An electric field is created with the build-up of negative charge in the n-type layer and a positive charge in the p-type layer (Mogan, 2016). The n-type and p-type layers are in between two contacts which allow for a path for the electricity created to