The Heat recovery steam generators market is experiencing an unprecedented surge, driven by the explosive growth of AI data centers and the remarkable comeback of combined cycle power plants. According to Market Research Future, the market is positioned at the intersection of two transformative trends: the digital infrastructure buildout that is reshaping global electricity demand and the strategic pivot toward high-efficiency gas-fired generation that complements renewable energy expansion. The convergence of massive AI data center investments, stringent decarbonization mandates, and the need for reliable dispatchable power is creating extraordinary demand for HRSG systems. As hyperscale operators and utilities scramble to secure power for energy-intensive AI workloads, heat recovery steam generators are emerging as critical enablers of efficient, flexible, and sustainable power generation .

Key Market Statistics

Insights from Market Research Future and industry analyses indicate that the Heat Recovery Steam Generator market is on an exceptional growth trajectory. The global HRSG market was valued at approximately USD 1.60 billion in 2025 and is projected to reach USD 2.68 billion by 2035, exhibiting a compound annual growth rate (CAGR) of 5.28% during the forecast period . Other analyses place the market at USD 2,183 million in 2025, forecast to reach USD 2,529 million by 2032 . The once-through HRSG segment is the fastest-growing design category at a 6.91% CAGR, driven by demand for quick-start architectures that support grid flexibility . Asia-Pacific dominates the market with approximately 42.55% of global revenue in 2025, supported by multi-gigawatt CCGT expansions in China, India, Vietnam, and Thailand . The chemical and fertilizer plants segment is the fastest-growing end-user category at a 6.55% CAGR . Key players include Siemens Energy, GE Vernova, Mitsubishi Power, Babcock & Wilcox, and Nooter/Eriksen.

Industry Trends and Technological Evolution

The Heat Recovery Steam Generator market is being shaped by several transformative trends. The AI data center boom is a primary driver, with more than USD 100 billion per month in new AI data center projects announced worldwide over the past year, bringing the total in play to over USD 3.2 trillion . Approximately 4,300 of 7,250 data center projects worth around USD 1.6 trillion will begin construction in the next 18 months, many energised by combined cycle power plants equipped with advanced HRSG systems . This structural, multi-year theme of digital infrastructure buildout is set to continue for the foreseeable future.

Regional differentiation in HRSG design requirements is another major trend. In the United States, there is a trend toward power stations for data centers with extremely high availability requirements . In Europe, there is greater need for high-cycling power stations with daily start/stop capabilities and faster start-up and shutdown times . In Asia, the focus is on baseload operation with even higher efficiency, including higher steam temperatures and pressures and greater power output . Siemens Energy offers a range of HRSG configurations to meet these diverse requirements, from basic horizontal models to vertical designs with single to three-pressure stages and reheat capability .

Carbon capture readiness is emerging as a critical trend, with the U.S. Department of Energy expanding 45Q tax credit eligibility to include CCGT-CCS facilities, offering USD 85 per tonne for geologically stored CO₂ . CCS-ready HRSGs require 15–20% additional heat-exchange surface to offset exhaust back-pressure from amine scrubbers, raising unit cost by approximately 10–15% but qualifying projects for substantial tax credits . The European Commission has published final delegated acts under the EU Taxonomy classifying gas-fired generation as transitionally sustainable, provided plants integrate CCS-ready HRSG designs by 2030 .

Modular and factory-assembled designs are gaining traction, with companies like Rentech Boiler Systems offering custom-engineered HRSG systems for gas turbines from 1 MW to 50 MW . These modularised units are built and assembled off-site, shipped to location, and commissioned rapidly, reducing construction timelines and improving quality control . Digital twin technology and AI-enabled predictive maintenance are transforming HRSG operations, with companies like GE Power investing heavily in digital twin technology for HRSGs to enable predictive maintenance and operational optimisation . Hydrogen-ready HRSG designs are emerging, with projects like the H2Oregon partnership targeting 600 MW capacity and demonstrating how HRSG technology can contribute to the hydrogen economy by recovering waste heat for chemical processes .

Challenges Facing the Market

The Heat Recovery Steam Generator market faces challenges that could moderate its growth. Raw material price volatility for specialty steels and alloys, including Grade 91 (9Cr-1Mo-V) steel for superheater and reheater tubes and Inconel 617 for the most demanding once-through applications, poses risks to profitability . Supply chain constraints for high-pressure drum forgings, which represent the critical-path item for HRSG delivery, can extend lead times significantly . Geopolitical uncertainties and trade restrictions further complicate planning and procurement for global HRSG suppliers .

Cycling frequency impacts on HRSG unit lifespan present technical challenges. Daily hot-cycling can reduce drum and header fatigue life by 30–40% compared to baseload operation, requiring buyers to specify fatigue-life analyses per EN 12952-4 and negotiate cycling-duty warranties . Permitting and regulatory complexity varies significantly across jurisdictions, adding time and cost to project development. Skilled workforce shortages for specialised HRSG engineering, installation, and maintenance are a growing concern. Intense competition among established players and new entrants can create pricing pressure and affect margins .

Future Outlook

Analysis presented by Market Research Future suggests a highly promising future for the Heat Recovery Steam Generator market, with significant opportunities emerging from technology and market trends. The continued AI data center buildout will drive substantial demand for HRSG-equipped combined cycle plants, with hyperscale operators prioritising high availability and reliability . Expansion of CCS-ready HRSG configurations will accelerate as carbon pricing mechanisms strengthen and 45Q tax credits incentivise deployment .

Growth in industrial co-generation projects will drive demand for HRSGs in chemical, fertilizer, refining, and manufacturing facilities, with the chemical segment projected to grow at a 6.55% CAGR . Modular HRSG designs will enable faster deployment and reduce construction costs, particularly for smaller capacity installations . Hydrogen-ready HRSG technology will open new applications in the emerging hydrogen economy . Aftermarket services and digital monitoring add-ons will become increasingly important revenue streams, with long-term service agreements covering 12–16 years standard among top-tier OEMs and digital monitoring contributing 8–12% of lifetime contract value . By 2035, the market is expected to be robust, driven by the AI data center boom and the combined cycle renaissance.

Conclusion

According to Market Research Future, the Heat Recovery Steam Generator market is positioned for exceptional growth, underpinned by its critical role in enabling efficient, flexible, and sustainable power generation. The market's evolution is defined by a shift towards modular designs, digital integration, and carbon capture readiness. While challenges related to raw material costs, supply chains, and technical complexity persist, the long-term outlook remains highly positive. The continued development of advanced HRSG designs, CCS-ready configurations, and hydrogen-ready technology will create significant opportunities for stakeholders. The HRSG Systems Market will play a pivotal role in shaping a reliable, efficient, and decarbonized energy future.

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