For rural telecom sites, the biggest TCO gains come from reducing diesel dependence and protecting battery life. Hybrid power systems can cut generator runtime by 50-80%, lower fuel-theft exposure, and extend lithium battery service life to 8-15 years versus 2-4 years for poorly managed VRLA. Increasing deployment of off-grid and hybrid telecom towers is accelerating demand for advanced power systems in Brazil. Renewable energy integration, particularly solar-diesel hybrid systems, is reshaping power strategies for telecom operators. The push to reduce operational expenditure (OPEX) is. A consortium formed by Huawei Digital Power and British company Aggreko is set to deploy the largest integrated battery energy storage system (BESS) in Brazil in the Amazon region, through a hybrid project combining solar plants and storage to supply electricity to isolated communities in Amazonas. There has been a surge in the introduction of wind and solar power, especially small-scale, distributed generation projects, mainly solar photovoltaic, which reached an installed capacity of 37GW in 2025. While a harbinger of good news from a sustainability perspective, the introduction of. The hybridization of photovoltaic (PV) and concentrated solar power (CSP) technologies offers a viable solution to enhance dispatchability and reduce energy costs in solar power systems. This study analyzes two CSP-PV hybrid configurations—parabolic trough and solar tower—in diverse Brazilian. This paper addresses the techno-economic viability of rooftop PV systems with batteries in Brazil for low voltage prosumers under net metering. Besides the traditional metrics NPV and LCOE, two additional indices adequate for battery systems are considered: the LCOS that measures cost, and the LVOS.