Licensing and permitting requirements for solar storage installation are critical steps to ensure legal compliance and safety standards. Authorities typically mandate that developers obtain specific permits before commencing installation, which vary by jurisdiction and. . The Energy Commission, the State of California, its employees, contractors and subcontractors make no warranty, express or implied, and assume no legal liability for the information in this report; nor does any party represent that the uses of this information will not infringe upon privately owned. . A flywheel-storage power system uses a flywheel for grid energy storage, (see Flywheel energy storage) and can be a comparatively small storage facility with a peak power of up to 20 MW. It typically is used to stabilize to some degree power grids, to help them stay on the grid frequency, and to. . Flywheel energy storage technologies provide reliable backup power with many attractive features compared with conventional battery technologies. Flywheels have been around for thousands of years. The earliest application is likely the potter's wheel. Perhaps the most common application in more. . There is noticeable progress in FESS, especially in utility, large-scale deployment for the electrical grid, and renewable energy applications. This paper gives a review of the recent developments in FESS technologies. Understanding the regulatory framework governing these systems is crucial, as it encompasses licensing, property rights, safety standards, and data security.