Swedish Stirling AB (publ) develops and commercializes Stirling engine technology to convert thermal energy into electricity, focusing on clean-tech solutions for waste heat and residual gas recovery. The company offers PWR BLOK, a containerized 400 kW unit that generates carbon-neutral power from industrial flare gases, residual gases, and waste heat; PWR BLOK 400-F, a variant optimized for flare gas combustion; and hybridized Stirling engines combining solar energy with fuel for demand-driven power generation. It operates primarily in the renewable energy equipment sector, targeting industrial clients in mining, smelting, and manufacturing, with key projects in South Africa including installations at Glencore's Lydenburg smelter and potential deals with Samancor and Richards Bay Alloys. Founded in 2008 and headquartered in Gothenburg, Sweden, with production facilities in Sibbhult and operations in South Africa, the company was formerly Ripasso Energy AB until its name change in May 2019 and trades on Nasdaq First North Premier. In 2024, TEXEL Technologies AB acquired the company's technology assets, marking a significant strategic shift as Swedish Stirling transitions following the divestiture.