Although solar energy requires soft costs such as permitting and installation, the consumer will receive a return on their investment due to low operating costs. In 2019, homeowners observed break-even points as low as three to four years. Some homeowners also generated huge savings, which ranged between USD 10,000 and USD 30,000 over 20 years. The unstoppable rise in technologies and scientific research has significantly pushed back solar costs and increased efficiency. For instance, in 1977, the price of a simple solar cell was $77 per watt and fell considerably to $0.74 per watt in 2013. The average price to install solar has also decreased by more than 70% between the years 2010 and 2017. Costs are continuing to decline as companies are increasingly taking economic advantage of using solar energy.