Decarbonization Strategies in Power Sector Planning

Decarbonization of the power sector has become pivotal to global efforts to limit average temperature rise and achieve net-zero emissions. Strategies span expansion of renewable capacity, deployment of energy storage and demand-side management to balance variable supply, and reinforcement of transmission grids to connect resource-rich regions with demand centres. Carbon pricing and market-based mechanisms drive investment in low-carbon technologies, while integrated planning models quantify trade-offs between cost, reliability and emissions. Innovations in carbon capture, utilisation and storage (CCUS) target residual emissions from thermal plants, and digital optimisation tools improve unit commitment and dispatch. A coherent policy framework aligns targets, incentives and regulatory measures, enabling coordinated expansion of generation, transmission and flexibility resources. Together, these approaches facilitate a secure transition towards a resilient, low-carbon electricity system with practical applications ranging from islanded grids to multi-region networks and underpin the economic case for clean energy investments worldwide.

Research from Nature Portfolio

Recent studies have analysed the effectiveness of alternative energy and imported power in substituting fossil generation. In a longitudinal assessment of a large national grid, each unit of renewable energy displaces a limited fraction of coal-fired output until the renewable share surpasses approximately 10%, after which significant rebound in fossil consumption can occur. This work highlights the necessity of pairing renewables with carbon pricing, enhanced grid interconnections and energy-efficiency measures to secure deeper decarbonization gains and prevent unintended increases in emissions.

Decarbonization Strategies in Power Sector Planning publication trend

The graph below shows the total number of articles in decarbonization strategies in power sector planning across all publications each year (not limited to Nature Index journals).

Technical terms

Curtailment: The reduction of renewable energy output below available potential due to grid constraints or lack of demand.

Carbon capture, utilisation and storage (CCUS): A suite of technologies that capture CO₂ emissions from power plants or industrial processes for subsequent use or geological storage.

Levelized cost of energy (LCOE): The average lifetime cost of electricity production per unit of energy, encompassing capital, operation, maintenance and fuel expenses.

Unit commitment model: A mathematical tool for scheduling generation units to meet demand at minimum cost while satisfying technical, operational and reliability constraints.

References

1. Displacement efficiency of alternative energy and trans-provincial imported electricity in China. Nature Communications (2017).
2. Balancing the Water-Carbon Trade-Off: Development of a Bi-Level Source-Grid-Load Synergistic Optimization Model for Multi-Regional Electric Power System. Electronics (2024).
3. Optimization of Provincial Power Source Structure Planning in Northwestern China Based on Time-Series Production Simulation. Energies (2024).
4. Economics of planning electricity transmission considering environmental and health externalities. iScience (2022).