Solar panel is also one of the most favorable sources in the world, and it is especially promising for sunny areas. The natural climate of Azerbaijan also provides extensive opportunities to increase the production of electricity and thermal energy by utilizing solar energy. Thus, the amount of sunny hours is 2400–3200 hours in Azerbaijan during the year, this means that the amount of solar rays falling on the territory of Azerbaijan is superior compared other countries that can be estimated as one of the efficiency criteria for attracting investments in the use of solar energy. The development of utilization of solar energy can partly solve energy problems in several regions of Azerbaijan.
