Integration of Variable Energy Resources

Order 764 required transmission providers to revise their tariffs to facilitate better integration of variable energy resources, particularly wind and solar generation. The order mandated the adoption of 15-minute scheduling intervals to replace the outdated hourly scheduling system, allowing operators to better balance supply and demand as renewable output fluctuates throughout the hour. It also required transmission providers to offer intra-hourly scheduling for generators and enhanced the ability of system operators to manage transmission constraints caused by variable generation. These changes were essential to reliably and efficiently operating a grid with rapidly increasing amounts of renewable energy.