Brazil's Origem Energia SA is investing up to $150 million in underground natural gas storage caverns in Alagoas state to strengthen the nation's renewable-heavy power grid. The project will store gas in depleted reservoirs, allowing the company to supply power plants during peak demand and balance intermittent renewable energy sources. CEO Luiz Felipe Coutinho described the storage sites as "the cheapest battery that exists" for Brazil's electricity system.

Brazil relies on renewable energy for nearly 90% of its power generation, making grid stability a critical challenge. The storage project aims to attract data centers by ensuring reliable power supply when wind and solar generation declines. Coutinho emphasized that Brazil's thermal power plants can be activated in under an hour to provide backup when renewable generation dips, addressing the intermittency issues that have historically limited the country's energy security.

The first phase of the project will provide 60 million cubic meters of storage capacity and could be operational within three to four months. This initiative also helps Origem overcome Brazil's underdeveloped gas pipeline network, which lags behind major economies like the US and Europe. The storage solution will support both existing and planned power plants while reducing dependence on imported gas during drought periods that affect hydroelectric generation.