You might wonder about solar energy, here is 5 things you should know about:
1. The concept of harnessing energy from the sun is not new
The first to predict that we may one day use the energy of the sun to power human endevours was Leonardo da Vinci, in the 15th century. The first solar cell was developed in the 19th century.
2. Solar energy is completely free and renewable
Once the initial solar panel costs are covered, you will not need to spend a cent on the electricity they produce. Moreover, you will reduce your carbon footprint by using solar energy, since it is totally green and renewable. Solar energy users save, annually, as much as 75 million barrels of oil and 35 million tons of carbon dioxide. A huge amount of power can be harnessed from the sun: in just one hour, the Earth receives more energy than it would consume in an entire year (approximately 120 terawatts).
3. A solar energy system is very low maintenance
Once the solar panels are installed, almost no maintenance is required. You will only have to make sure they’re clean and not shaded by anything. A tilted roof will require less cleaning, since rain helps remove dirt. Additionally, solar panels have a very long lifespan. They carry a standard 25-years warranty, but can last up to 30-40 years.
4. Solar panels do not need direct sunlight to work
Even though maximum efficiency is reached when the sun is shining, electricity is still produced on cloudy days. On the other hand, no electricity can be produced at night, but a storage system can solve this problem. The solar battery storage system cost can be paid off by selling excess energy to national grid and by the benefit of making you 100% energy independent. Solar panels produce free electricity during the day, which is when it is more expensive in many cities and hence more valuable.
5. Solar panels do not function better in hotter climates
Surprisingly, solar panels do not work better in hotter climates. That is because solar cells harness sunlight and not heat, and their efficiency is decreased by high temperatures. The function and efficiency of solar panels is determined by the length, angle and lack of obstruction of sun exposure.