The Steam Boiler Addon is used to convert generators from direct electricity production to steam generation.
Steam Generation
When attached to a generator (such as the Fuel Generator), it modifies the machine to consume fuel and water to produce high-pressure steam instead of RF.
Water must be pumped into the boiler addon, and the generated steam can then be extracted and used to power Steam Engines or other steam-driven systems. This is often more efficient for large-scale energy networks.