In 2023, clean energy resources provided about 41% of electricity in the United States, with more than 16% of total generation provided by wind and solar—called “variable” renewable energy sources because of their daily and seasonal fluctuations in availability. The bulk power system, which supplies and transmits electricity, maintained high reliability throughout the year, showing that grid reliability is achievable as deployment of wind and solar has increased.
This report “Maintaining Grid Reliability – Lessons from Renewable Integration Studies” by NREL discusses key findings from both the research body of knowledge and real-world practice related to grid reliability, and demonstrates how to plan for and achieve continued reliability in the future as wind and solar deployment increase.
Summary of Findings:
- Short-term variability and uncertainty in renewable generation can be managed cost-effectively by increasing grid flexibility.
- Demand for electricity during all hours of the year can be met through a portfolio approach.
- Increased utilisation of power electronics supports frequency stability
- Expanded transmission networks are central to increasing reliability
Access the complete report here
