According to consulting firm ICF, the U.S. power sector faces an aggressive capacity expansion, with approximately 445 gigawatts of new generation projected to come online by 2030. Solar energy and battery storage systems will constitute the bulk of these additions, reflecting the shift toward renewable and flexible generation resources. This buildout underscores the structural transformation underway in how the nation generates and stores electricity.
The capacity additions become critical given projections that U.S. electricity demand will surge by 39 percent through 2035. However, ICF's analysis reveals a troubling bottleneck in certain markets: both PJM Interconnection and ERCOT, the two largest U.S. grid operators covering significant portions of the Eastern and Texas markets respectively, face zero spare capacity to accommodate demand growth beyond 2027. This gap poses a near-term reliability challenge for parts of the country.
To bridge this capacity shortfall, ICF suggests that demand response programs and grid-enhancing technologies offer partial solutions. By reducing peak demand and optimizing transmission efficiency, these measures can help manage the transition period until new generation resources enter service. Policymakers and grid operators will need to coordinate closely to ensure the infrastructure expansion proceeds at the pace required to support the anticipated surge in electricity consumption.