- 13.75MW/50.16MWh battery energy storage system connected to grid in Italy alongside 35MWp solar plant.
- Project demonstrates retrofit integration of storage into an operating renewable energy asset in a mature market.
- Hybrid configuration expected to improve grid stability, reduce curtailment and unlock new revenue streams.
LONGi has announced the successful grid connection and commencement of commercial operations of its 13.75MW/50.16MWh Montalto Battery Energy Storage System in Italy. The facility is co located with an existing 35MWp photovoltaic plant and represents the company’s first fully integrated storage deployment in Europe.
The project highlights a growing trend in Europe where existing renewable energy assets are being upgraded with storage capacity to improve flexibility and commercial performance. In this case, the integration of the battery system into an already operating solar installation required careful technical design and coordination, given the constraints of working within established infrastructure.
The system uses an AC coupled hybrid configuration that allows it to operate in parallel with the existing solar plant without the need for major structural modifications. This approach supports grid stability, helps reduce renewable energy curtailment and enables more flexible participation in Italy’s evolving electricity market.
According to the company, the project is designed to combine multiple revenue mechanisms, including participation in capacity market arrangements which are expected to provide a relatively stable income stream while also enhancing grid security.
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To support long term operational performance, the asset is backed by a Long Term Service Agreement together with dedicated operations and maintenance services aimed at ensuring high availability and consistent output over time.
LONGi stated that the successful connection of the Montalto project demonstrates its capability to deliver energy storage solutions in complex and mature markets, particularly where integration with existing renewable infrastructure is required. The company continues to expand its presence in Europe with a focus on improving the flexibility, reliability and commercial viability of renewable energy systems.
Author: Bryan Groenendaal
