The global flue gas desulfurization system market is projected to grow from USD 23.60 billion in 2026 to USD 31.70 billion by 2031, representing a 6.1% CAGR, according to MarketsandMarkets. Demand is being driven by stricter environmental regulations, efforts to reduce sulfur dioxide emissions and investment in power-generation and industrial emissions-control infrastructure. Asia Pacific held a 48.2% market share in 2025 and is expected to record the fastest growth through 2031, with China, India and Southeast Asia leading retrofit and new-build activity. Wet FGD systems are expected to retain the largest share by 2031 because of removal efficiencies exceeding 95% and established use in large coal-fired power plants, cement kilns and industrial boilers. Dry and semi-dry systems are forecast to grow at an 8.1% CAGR, while greenfield installations are expected to expand at 8.0%. Cement manufacturing is projected to be the fastest-growing end-use segment, with an 8.5% CAGR. India has identified 537 thermal power units representing approximately 204 GW for FGD installation. Key companies include Mitsubishi Heavy Industries, GE Vernova, Babcock & Wilcox Enterprises, ANDRITZ, Valmet, Bharat Heavy Electricals and others.