Solar panels require minimal maintenance once installed, except for cleaning. Large solar panel manufacturers tend to offer twenty to twenty-five year warranties on their products (Maehlum). This means that companies know that their product will last a long time and investors will not have to deal with units malfunctioning or breaking. Solar energy is also sustainable in the fact that the use of solar energy will not abandon generations to come. It is impossible to consume too much solar energy, as is the case with fossil fuels (Maehlum). This is a concern with fossil fuels, as they are not renewable. It is important to have as little dependence on fossil fuels as possible so that future generations do not find themselves with dwindling energy sources. An energy source that can be relied on for generations means stability. Stability is essential when considering the future. A stable source of energy is the key to a stable society. Without a stable source of power, there can be no stability in society. There would be no way to stay warm and no source of energy. By implementing renewable energy on a larger scale and becoming less dependent on fossil fuels, humanity is securing part of its future. Solar energy helps protect future generations from the worry of an energy crisis by being an energy source that can be relied on for many years.