Legacy Architecture Compatibility:
Legacy systems often struggle with compatibility issues when integrated with modern technologies, impacting performance, reliability, and security. The rapid evolution of emerging technologies, including grid monitoring tools, AI, and advanced cybersecurity solutions, demands ongoing investment in infrastructure upgrades to ensure these legacy systems can continue to support future operational demands. Collaborating with industry experts and strategically prioritizing upgrades can help address these challenges effectively.
Why It Matters
Aging grid infrastructure poses challenges to compatibility with newer technologies, cybersecurity protections, and modern control systems. Legacy systems can limit automation, slow response capabilities and create vulnerabilities that affect the reliability and security of the Bulk Power System (BPS).
As digital tools become more essential to grid operations, these legacy constraints present growing operational risks.
What SERC Is Doing
SERC works with registered entities to identify legacy systems and assess associated risks. It supports transition planning for infrastructure upgrades and highlights industry best practices to improve compatibility. SERC also includes legacy technology considerations in its event analysis, reliability assessments and technical outreach.
What You Can Do
Identify critical systems nearing end of life and assess compatibility issues.
Engage with SERC to share infrastructure challenges and learn from peers.
Include legacy systems in vulnerability assessments and planning processes.
Resource Downloads
Resource Library
SERC’s Resource Library offers centralized, on-demand access to technical content that supports reliability and security across the Bulk Power System.
Q&A and Lessons Learned
SERC 2025 Summer Assessment
The 2025 SERC Reliability Corporation (SERC) Summer Reliability Assessment Report evaluates the resource and transmission adequacy to meet projected peak demand under various scenarios for the upcoming summer season across the SERC region.
2024-2034 Long Term Reliability Assessment
SERC Reliability Corporation’s (SERC) mission is to ensure
the effective and efficient reduction of risks to the reliability and security of the bulk power system (BPS).
2024-25 SERC Winter Reliability Assessment
The 2024-25 SERC Reliability Corporation (SERC)1 Winter Reliability Assessment Report evaluates the resource and transmission adequacy to meet projected peak demand for the upcoming winter season across the SERC region, which includes all or portions of 16 southeastern and central states.
What You Can Do
Improve renewable generation forecasts and incorporate them into planning
Collaborate with balancing authorities and system operators on coordination strategies.
Stay involved in SERC’s working groups on variable generation integration.
Resource Downloads
Renewables Integration and New Technologies
Renewables Integration and New Technologies
Based on the 2023-2033 SERC Annual Long-Term Reliability Assessment Report, the existing total internal generation capacity for the SERC Region is 309.6 GW (323.1 GW winter capacity).
2024-2034 Long Term Relilibity Assessment
RM10-11-001 Integration of Variable Energy Resources
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