Abstract: CO₂ generated from the combustion of fossil fuels is the primary cause of global warming. Carbon capture and storage （CCS） is considered a key approach for reducing greenhouse gas emissions. Amine scrubbing, a mature technology currently being demonstrated at a commercial scale, is a suitable retrofit option for coal-fired power plants. However, the energy demand for solvent regeneration in chemical absorption-based CO₂ capture significantly reduces power plant efficiency and power output. Therefore, new technologies with lower efficiency losses need to be developed. The promising Calcium Looping （CaL） technology has garnered significant attention for its potential to reduce efficiency losses and associated electricity costs. This technology is based on the reversible carbonation/calcination reaction of calcium-based sorbents under high-temperature conditions. This review summarizes the integration of CaL technology into coal-fired power plants and cement plants, evaluating ways to improve the performance of integrated systems. For the integration of CaL technology into coal-fired power plants, the review primarily focuses on three aspects: the heat source for the calciner in the CaL system, methods to reduce calciner energy consumption, and strategies for obtaining high-purity CO₂. For the integration of CaL technology into cement plants, the emphasis is on summarizing the CO₂ avoided costs in cement plants of varying scales, with and without CO₂ capture systems. The findings indicate that when CaL technology is integrated into coal-fired power plants, the system efficiency penalty ranges from 2.6% to 7.9%, with CO₂ avoided costs between €16~€53.1/t. For integration into cement plants, the CO₂ avoided costs range from €17.1~€83.2/t.