The Type segmentation of the Boilers for Power Generation market distinguishes four primary boiler architectures: fire‑tube, water‑tube, fluidized‑bed, and once‑through designs. Fire‑tube boilers, characterized by hot gases passing through tubes surrounded by water, dominate small‑ to medium‑scale facilities due to lower capital costs and simpler maintenance, contributing roughly 25% of total market revenue. Water‑tube boilers, where water circulates within tubes exposed to combustion gases, support higher pressure and temperature outputs, making them the preferred choice for large‑scale, high‑efficiency plants and accounting for approximately 45% of market size. Fluidized‑bed boilers, leveraging a sand‑like bed to enhance fuel flexibility and emission control, capture about 20% of the market, driven by increasing adoption in biomass and waste‑to‑energy projects. Once‑through boilers, which eliminate the steam drum and enable rapid start‑up, represent the remaining 10%, primarily in advanced combined‑cycle configurations. Collectively, these type categories define the technical foundation of the Boilers for Power Generation segmentation, shaping investment patterns and capacity planning across the sector.