Value of Long-Duration Energy Storage and Oxy-Combustion in Renewables Driven Grids

Decarbonizing the power sector is key for mitigating climate change. However, as the grids integrate higher capacities of variable renewable energy, supply-demand mismatches and increased curtailment are challenging their further adoption. In this paper, two technological tools are studied to reduce these challenges: long-duration energy storage (LDES) and oxy-combustion. For modelling high renewable penetration grids, such as California, a capacity expansion model is used. For the modelled years 2030, 2035, 2040 and 2045, the impact of the availability of 100-h LDES and oxy-combustion is studied.