Heat Recovery Steam Generator Market Size & Share Analysis - Growth Trends and Forecast (2026 - 2031)

Global Heat Recovery Steam Generator Market Trends and Insights

Expansion of CCGT Capacity Pipeline

Global developers anticipate commissioning more than 18.7 GW of new combined-cycle capacity in the United States by 2028, with parallel multigigawatt programs also advancing in Saudi Arabia, Qatar, and China.^{[1]U.S. Energy Information Administration, “Annual Energy Outlook 2025,” eia.gov} Project sponsors are specifying HRSGs that tolerate wider exhaust-gas temperatures from hydrogen-capable turbines and integrate exhaust-gas recirculation to cut carbon-capture costs by 6%.^{[2]GE Vernova, “Enhancing CCGT Efficiency with Exhaust Gas Recirculation,” gevernova.com} As turbine backlogs extend to 2029, utilities are placing early equipment orders, shifting the competitive advantage toward vendors with captive module fabrication capabilities. The robust pipeline provides multi-year revenue visibility for the heat recovery steam generator market, although schedule risk remains tied to turbine availability and financing milestones. Design complexity is trending upward because owners demand rapid starts, part-load efficiency, and materials resilience under high-hydrogen combustion gases.

Industrial Emission-Reduction Mandates

The US Environmental Protection Agency now requires 90% CO₂ abatement for long-run coal and new baseload gas plants by 2032, prompting industrial campuses to retrofit or build cogeneration plants centered on HRSG technology.^{[3]United States Environmental Protection Agency, “New Source Performance Standards for Fossil-Fuel-Fired Power Plants,” epa.gov} European chemical producers, exemplified by BASF’s 160 MW heat-pump-steam complex in Germany, illustrate how mandates convert environmental compliance into energy-efficiency investments. Facilities pursuing net-zero pathways incorporate triple-pressure HRSGs that feed both process steam and solvent-based capture units. Chemical and fertilizer operators seek configurations compatible with amine regeneration loads, enabling them to comply without jeopardizing throughput. Early movers who master permitting and technology integration benefit from lower lifetime compliance costs and potential carbon credit upside.

Operational-Cost Pressure in O&G & Chemicals

Volatile LNG price expectations near USD 13 per million British thermal units for 2025 squeeze margins for refineries and petrochemical plants.^{[4]Institute for Energy Economics and Financial Analysis, “Gas Price Volatility and LNG Affordability,” ieefa.org} Installing turbine-HRSG cogeneration schemes yields fuel savings of USD 5 million per year for a 12 MWe module and achieves up to 100% energy efficiency improvements over fired boilers. Operators also monetize surplus electricity during market peaks, turning cost centers into revenue contributors. Flexibility remains critical; plant managers prefer once-through HRSGs that track variable steam loads without drum-level constraints. These economics underpin a sustained flow of retrofit awards, particularly in US Gulf Coast petrochemical corridors and Middle East refining hubs.

CO₂-Capture Integration Boosting Low-Pressure Steam Demand

Carbon-capture pilots that pair molten-carbonate fuel cells with HRSGs show 90% CO₂ removal while raising net plant output by 42% versus amine systems. Capture solvers demand stable low-pressure steam, a profile naturally provided by multi-pressure HRSGs, thereby displacing auxiliary boilers. Steam-methane reformer complexes utilizing sequential combustion and HRSG heat recovery can achieve a thermal efficiency of 38.9%, producing hydrogen and power within a shared capture scheme. Industrial clusters in Alberta and Rotterdam, which pool CO₂ pipelines, amplify economies of scale, reinforcing HRSG adoption curves through 2030. Vendors offering integrated capture-ready drums and space allowances command pricing premiums yet face minimal short-term competition due to engineering barriers.

High CAPEX & Long Pay-Back vs Alternatives

The typical CCGT equipped with a triple-pressure HRSG costs USD 0.25 million per MW more than an open-cycle plant, extending payback periods to 8-12 years in low-capacity-factor grids. Developers in Southeast Asia and Africa face higher financing spreads, tilting procurement toward less efficient but cheaper OCGT sets. Growth in the heat recovery steam generator market, therefore, tends to favor jurisdictions that offer capacity payments or energy-efficiency incentives. Multilateral lenders attempt to bridge the gap with green-bond frameworks, yet disbursement timelines can delay order intake.

Gas-Price Volatility Dampening CCGT FIDs

Commodity swings triggered by geopolitical tensions push gas-forward curves into steep contango, unsettling revenue models for merchant CCGT assets. Lenders raise debt-service coverage ratios, and independent power producers defer final investment decisions, directly reducing near-term HRSG bookings. Integrated utilities with regulated cost recovery remain less exposed; however, even they are reevaluating project timings to align with contracted LNG supplies. Price volatility also clouds the competitiveness of gas-to-power in renewables-heavy grids, periodically shifting preference toward battery storage or demand-side management.

*Our forecasts treat driver/restraint impacts as directional, not additive. The impact forecasts reflect baseline growth, mix effects, and variable interactions.

Segment Analysis

By Design: Once-Through Flexibility Gains Ground

Once-through HRSGs, although still a minority, are projected to grow at a 6.46% CAGR through 2031, while drum-type systems accounted for 58.12% of the 2025 revenue. Horizontal drum units retain dominance in base-load CCGT blocks because they provide consistent steam purity and proven durability. Vertical drums serve space-constrained retrofit sites, particularly inside refineries. The heat recovery steam generator market size for once-through units is projected to rise from USD 0.49 billion in 2026 to USD 0.67 billion by 2031, reinforcing supplier focus on quick-start architectures. Startup curves of under 30 minutes enable plant operators to chase peak pricing windows, whereas drum systems still average 60 to 90 minutes. Hydrogen-blend pilots indicate lower chloride-induced stress corrosion on once-through tube circuitry, positioning the design as a hedge against future fuel shifts. That said, water-quality demands remain stringent; owners are investing in condensate polishing skids to safeguard turbine blades.

Horizontal drum HRSGs will continue to dominate the larger slice of the heat recovery steam generator market, as mega-scale CCGT projects exceeding 800 MW tend to opt for familiar layouts and economies of scale. OEMs package triple-pressure with reheat trains to maximize combined-cycle output beyond 64% net efficiency, as validated by Thailand’s 5,300 MW M701JAC cluster. Enhancements, such as 3D-printed low-pressure economizer fins and advanced T91 steel headers, mitigate fatigue from cycling, thereby extending service intervals. Over the forecast horizon, incremental upgrades ask smart soot-blowing and infrared tube monitoring will prolong the competitive life of drum configurations, even as once-through units proliferate in mid-merit plants.

By End User: Chemicals Propel Incremental Demand

Power plants represented 60.72% of 2025 shipments, translating into a heat recovery steam generator market size of USD 0.92 billion. In contrast, chemicals and fertilizers posted the highest 6.12% CAGR, rising from USD 0.23 billion in 2026 to USD 0.31 billion in 2031. Chemical complexes pursue cogeneration revamps to offset gas cost spikes and comply with tightening carbon budgets. Ammonia producers retrofit single-pressure HRSGs on synthesis-gas turbines, shaving steam-reformer fuel by 12%. Refineries continue to anchor a stable demand base by replacing aging package boilers with turbine-HRSG trains that co-produce power and 55 bar steam. Data-center operators explore 5-10 MWe micro-cogeneration skids to cut scope-2 emissions while harvesting low-grade heat for absorption chillers.

Other industrial users, including those in the metals, pulp, and paper sectors, leverage HRSGs within biomass-hybrid systems to monetize process off-gases. Steelmakers in India integrate HRSGs with coke-oven gas turbines, achieving 25% internal power self-sufficiency. Food-grade CO₂ producers adopt HRSGs to supply reboiler duty for purification columns, capturing additional margin streams. Although power generation retains scale dominance, diversified industrial adoption underwrites a broader revenue plateau that protects suppliers from utility investment cyclicality.

Geography Analysis

Asia-Pacific continues to headline both market share and growth velocity. The region generated 42.55% of global 2025 revenue, and its 5.73% CAGR promises an incremental USD 0.22 billion by 2031, supported by multi-gigawatt CCGT expansions in China, India, Vietnam, and Thailand. China’s Huizhou hydrogen-ready CHP block exemplifies how developers future-proof assets for 50% H₂ firing, embedding once-through HRSGs with advanced fin-tube alloys. India’s national hydrogen mission is spurring the commissioning of cogeneration retrofits with dual-fuel turbines in Gujarat and Odisha. Japan’s fleet-renewal projects favor compact vertical-drum HRSGs for brownfield grid-balancing plants, aided by local content incentives.

North America leverages replacement cycles and emissions standards to sustain demand. The Environmental Protection Agency’s 90% CO₂ rule accelerates repowering of coal sites with CCGT-HRSG blocks that include spare pads for solvent regeneration exchangers. US Gulf Coast refineries embrace once-through HRSGs on aeroderivative turbines to hedge against LNG price volatility and carbon pricing proposals. Canada’s Alberta industrial carbon-capture hub contracts HRSG suppliers for waste-to-energy plants integrating post-combustion capture, expanding non-utility use cases.

Europe pursues decarbonization through high-efficiency, hydrogen-blend-capable HRSGs. Germany’s phase-out of unabated coal drives utilities to order triple-pressure, reheat systems with exhaust-gas recirculation for capture readiness. The Netherlands incentivizes combined heat-and-power upgrades in greenhouse horticulture, opening a niche segment for compact two-pressure HRSGs paired with small frame turbines. Supply-chain reliance on Asian pressure-part fabricators, however, exposes European projects to logistics delays, propelling interest in localized module assembly.

The Middle East records accelerating orders linked to Vision 2030 and industrial diversification. Saudi Arabia’s 7.2 GW CCGT pipeline specifies carbon-capture-ready HRSGs rated for 46 bar low-pressure steam to accommodate solvent regeneration, signaling design upgrades beyond conventional evaporator banks. Qatar’s North Field LNG expansion opts for compact HRSGs on aeroderivative turbines to maximize modular integration. United Arab Emirates utilities emphasize service contracts that guarantee 98% availability, funneling after-sales revenues to OEMs.

South America and Africa remain nascent but promising. Brazil tenders gas-fired thermal capacity to back solar and wind, including Bahia plants fitted with locally fabricated vertical-drum HRSGs to satisfy content rules. Nigeria and Mozambique evaluate small CCGT packages for industrial parks, but financing hurdles persist. Nonetheless, regional gas discoveries position both continents as long-term growth candidates once infrastructure matures.

Regulatory Landscape

Heat recovery steam generators (HRSGs) sit at the intersection of boiler safety rules and air-emissions compliance, so permitting and certification remain a key purchase prerequisite for both utility and industrial cogeneration projects. In the United States, HRSG installations that function as boilers or process heaters are governed by US EPA air rules such as NESHAP for major sources (40 CFR Part 63 Subpart DDDDD) and related New Source Performance Standards under 40 CFR Part 60 for fossil fuel-fired generating units, driving requirements for monitoring, burner management, and NOx/CO control around duct firing and supplementary combustion systems.

On the technical and performance side, buyers commonly specify recognized codes and standards to reduce lifecycle and acceptance-testing risk. API STD 534 (3rd edition, May 2024) is an industry benchmark for water-tube, drum-type HRSG design, materials, fabrication, and testing for combustion turbine exhaust applications, while ASME PTC 4.4 is used for performance test protocols for gas-turbine HRSGs. In Europe, Directive (EU) 2024/1785 amending the Industrial Emissions Directive tightens the compliance framework for industrial installations, creating a defined update cycle for emission limit values and associated best-available-technique alignment as Member States move toward national implementation by July 2026.

Market Opportunities and Future Outlook

Coal-to-gas conversions and high-efficiency combined-cycle builds create clearer scope for HRSG suppliers that can deliver fast-start, flexible steam systems while localizing pressure-part fabrication where lead times are tight. A 2026 proof point is the wave of new combined-cycle projects in Europe and Eurasia: GE Vernova and ENKA brought the 852 MW Kirklareli plant in Turkiye into commercial operation using a triple-pressure HRSG, and ORLEN synchronized the Grudziadz CCGT in Poland to the national grid in July 2026, extending the near-term pipeline for HRSGs and related service contracts.

Hydrogen readiness and carbon-capture integration are also reshaping specifications, pushing demand toward once-through or advanced multi-pressure configurations with controls and materials suited to wider exhaust conditions. Hydrogen combustion trials in CHP settings point to engineering needs around emissions control and heat-recovery stability at higher blends, which supports demand for integrated SCR/FGR interfaces and tighter thermal management. On the supplier side, project awards such as John Cockerill signing a June 2026 contract with Ansaldo Energia to design and supply an HRSG for a 460 MW combined-cycle plant in Ptolemais, Greece (a lignite-to-gas conversion) reflect momentum in retrofit-driven markets where execution speed and packaged engineering support influence vendor selection.