Renewables Integration and New Technologies

There has been rise in the SERC renewable energy resource portfolio, wind energy in the west and solar in south and south east.  Integration of variable energy resources (VERs) raise the risk of voltage regulation, dynamic response and sudden change in dispatch patterns. The changing characteristic of the grid with the growth of VERs will effect how the grid is operated in future. Since VERs are weather dependent, planning for backup resources in the absence of generation becomes essential to maintain the reliability of the system.


The SERC Variable Energy Resources Working Group (VERWG) provides an important platform for the stakeholders to come together and evaluate the effects of variable energy resource integration on the reliability of the Bulk Power System in the SERC Region. The SERC VERWG took a very important step forward in recent years by documenting the participating SERC stakeholder practices for Inverter Based Resource (IBR) integration and interconnection into their transmission grid. The participating SERC member utilities first conducted a survey to learn about their internal practices within their organization regarding the IBR points of interconnections, design and technical requirements, voltage, generator performance, metering and telecommunications, as well as testing and implementation requirements. The working group hosted numerous discussions on the technical materials and decided to prepare a living document which will be refreshed annually. The “Guidance for Inverter Based Resource (IBR) Interconnection” document will serve SERC stakeholders participating in this effort to learn from each other as they work with the owners of IBRs and add more generating resources to the SERC transmission grid. The members continue to prepare more guidance materials for commissioning new generating resources enabling up front coordination with vendors with relevant data and system readiness evaluation. The Region will continue to perform analysis and ensure that operational plans are in place to maintain a reliable system. Entities should develop real-time operating procedures; build contingency plans to address gas and electric interdependencies; ensure ramping capability, stability, and voltage support; and have a robust load forecasting methodology.


SERC’s mission is to promote reliability as an essential societal objective when advising those charged with making new policies that impact the BPS. The Region will continue to analyze and monitor policy changes and communicate results from analysis to inform industry discussions regarding the reliability impacts to reactive stability, generation and transmission adequacy. For more information on SERC’s data collections and reliability assessments, please see the Reliability Assessment and Performance Analysis webpages.