As reported by Canal Solar and other media outlets in recent days, the ANEEL (National Electric Energy Agency) confirmed that the tariff flag for the month of June will be red – level 1. The decision represents an increase in the cost of the electricity bill for Brazilian consumers, with an extra charge that goes from R$ 1,885 (in May, under the yellow flag) to R$ 4,463 for every 100 kWh consumed – the highest value recorded in 2025 so far.
According to ANEEL, the decision was motivated by unfavorable hydrological conditions, with reduced rainfall and the end of the wet season, which puts pressure on the national electrical system and increases costs for consumers. Given this scenario, solutions that promote greater energy autonomy gain even more relevance — especially photovoltaic systems with batteries. This view is reinforced by Breno Machado, commercial director of the Channels and Corporate Division at UCB Power.
According to him, this type of system allows consumers to generate their own energy and store the surplus produced during the day, using it at night or during peak hours — precisely when the cost of electricity from the grid is highest. “This reduces exposure to variations in tariff flags, brings cost predictability and also reduces dependence on the electricity grid, bringing greater energy security to the .”, he explains.
According to him, the investment in solar energy with batteries has gone from being a trend to becoming a smart strategy in the face of an increasingly unstable scenario in the electricity sector. “While the cost of energy rises, those who have already invested in storage protect their pockets and their consumption. The system is increasingly unstable, and consumers need to anticipate this,” reinforces the professional.
Another important point is the impact on the payback of storage systems. According to Machado, with the increase in tariffs and the red flag in effect, the return on investment can be reduced by up to one to two years, depending on the consumption profile and the efficient use of batteries.
About UCB
A UCB Power is one of the largest brands of energy storage solutions in Latin America. In Brazil, the company has an istrative headquarters in São Paulo (SP), two industrial plants in Manaus (AM) and Extrema (MG), as well as an office in Porto Velho (RO). The company is also one of the signatories of the UN Global Compact (United Nations), and is known not only for developing products for the solar energy market, but also for electric mobility.
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