World’s biggest 100 MWh battery to brew zero-carbon beer in Portugal

Heineken’s brewery in Lisbon, Portugal, is set to become the first in the beverage industry to operate using a world-record 100 MWh renewable-powered heat battery. Developed by Rondo Energy and supported by energy producer EDP, this system stores electricity as heat in refractory bricks and releases it as steam continuously over 24 hours, enabling the brewery to produce steam without fossil fuels or changes to its brewing process. The heat battery will supply 7 MW of renewable steam generated from solar power and grid electricity, delivered under a Heat-as-a-Service model, significantly reducing carbon emissions. This initiative supports Heineken’s broader sustainability goals of achieving net zero emissions across its value chain by 2040 and decarbonizing all production sites by 2030. The Lisbon facility already uses solar power and electric heat pumps, and the addition of the heat battery addresses the challenge of electrifying high-temperature steam production, a critical component in brewing. The project aligns with Portugal’s national target to cut greenhouse