Profshare estimates that power generation accounts for 25% of the industrial thermal insulation market in 2025, a share that reflects the scale and continuity of insulation demand from boilers, turbines and steam systems that run at sustained high temperatures. For insulation suppliers and specifiers, this means power generation functions less as a one-off construction market and more as a standing source of demand tied to the operating life of the asset rather than to a single build event.
What the share implies for buyers
Plant operators and the EPC contractors who build for them specify insulation against efficiency, safety and fire-protection requirements that apply for as long as the unit runs, not only at commissioning. Suppliers serving this segment are selling into maintenance and turnaround cycles as much as into new capacity, which gives the segment a different purchasing rhythm than markets where insulation is installed once and rarely revisited.
What is driving the share
The installed base of fossil, nuclear and waste-to-energy generation assets is large and long-lived, and insulation on boilers, flue ducts and steam lines degrades under continuous thermal cycling, which forces periodic replacement independent of new plant orders. Efficiency targets and surface-temperature safety rules add a second layer of demand, pushing operators to upgrade insulation on existing equipment rather than defer it.
What would change the share
A slowdown in retrofit and turnaround spending at existing power plants would narrow this share, as would a shift in new generation capacity toward technologies with lower insulation intensity per unit of output. Conversely, extended operating life for existing thermal plants, or tighter efficiency and emissions rules applied retroactively to installed assets, would tend to hold the share up or widen it.
What this figure does not tell you
This is a point-in-time estimate for 2025, not a trend line, and it does not indicate whether the share is moving up or down. It does not distinguish revenue from unit share, it does not identify which insulation material types are used within the segment, and it carries no regional breakdown.
Profshare sizes the broader industrial thermal insulation market at USD 3,188.30 million in 2025, expected to reach USD 4,503.63 million by 2032 at a projected CAGR of 5.1%, as detailed in the Industrial Thermal Insulation Market report.