Sensitivity analysis shows that the BL system could have a net present value of $710,364, a 38% internal rate of return, and a 2-year simple payback period over a 25-year life if the excess energy is sold to the grid. But based on real projects, most payback periods fall into a few clear ranges: Off-grid sites relying primarily on diesel generation: The fastest payback period is 0. 8 to 2 years; some projects in Nigeria have recouped their costs in less than 11 months. Sites with unstable grids and frequent power. Airtel Nigeria revealed that it deployed 200 solar-powered telecom towers between April 2025 and March 2026 across rural and urban areas. It's an attempt to reduce reliance on high-cost diesel and increase coverage. A load range of 4 kW to 8 kW was considered using: (i) an optimised generator schedule;. This paper explores the best energy options by which optimized energy solution for a given GSM base station site locatied in Nembe can be made. Also, LCOE increases with fuel price or discount rate increase, while CO 2 falls. Lack of reliable power stifles economic activity; in Nigeria, annual economic losses from lack of reliable power are estimated at 5 to 7 percent of GDP—at a cost of US$25 billion.
