Vietnam Electricity (EVN) has called for a detailed clarification regarding the effectiveness of solar power projects integrated with Battery Energy Storage Systems (BESS). The utility provider expressed concerns that this specific model leads to an increase in electricity prices. Despite the higher costs, EVN asserts that the actual benefits to the overall power system remain unclear. The request emphasizes the need for a transparent evaluation of how these storage systems impact grid stability and pricing. By questioning the current model, EVN seeks to ensure that technological upgrades do not unfairly burden consumers. The company aims to balance the integration of renewable energy with economic viability. Consequently, further evidence is required to justify the implementation of BESS in solar projects.