State Estimator Plus (SE+) -

An Accurate Non-Divergent State Estimator

Introducing SE+: Revolutionizing Power System Reliability and Accuracy

Smart Electric Grid, LLC (SEG) is proud to present the groundbreaking Accurate Non-Divergent State Estimator (SE+). This recent development offers power utility companies a reliable and feasible voltage solution under any circumstances. With SE+, system monitoring crashes are avoided, addressing a long-standing challenge in the field. This state-of-the-art solution successfully resolves the historical issues of divergence and robustness that have persisted in state estimators for over 50 years. Experience the next level of power system reliability and accuracy with SE+ from SEG.

SE+: The Ideal Offline Backup State Estimator

SE+ serves as an ideal offline backup state estimator, specifically designed to enhance the robustness and data accuracy of power companies' daily operations. By integrating SE+ into their infrastructure, power companies can significantly improve the reliability of their systems and ensure accurate monitoring even in challenging circumstances. With SE+ as their backup solution, power companies can operate with confidence, knowing they have a dependable tool to maintain operational integrity and minimize potential disruptions.

Benefits of SE+

1. Cost savings:
   • Eliminate the need for engineers to manually address state estimator divergence issues, reducing operational expenses.
2. Compliance assurance:
   • Avoid the risk of reporting state estimator divergence to NERC and potential fines associated with severe divergence cases.
3. Enhanced EMS reliability:
   • Boost the overall reliability of your Energy Management System (EMS) by up to 45%.
4. Improved data quality:
   • Experience significant improvements in data quality, particularly in reactive power and voltage magnitudes, leading to more precise daily operations.
5. Bad data detection:
   • Identify and flag problematic data that may cause state estimator divergence, providing accurate true values for contaminated measurements.

Empowering Power Companies with SE+

SE+ delivers on its promises, empowering power companies with a robust and accurate state estimation solution. It mitigates operational challenges and ensures compliance with industry regulations. By adopting SE+, power companies can enhance their system monitoring capabilities, improve data quality, and maintain the integrity of their operations.

Experience the future of power system security and accuracy with SE+ from Smart Electric Grid, LLC.

Clients & Industry Adoption

Grid Science Solutions’ core product, SE+, has been rigorously evaluated, validated, and adopted by leading North American utilities and system operators. Oncor completed a four-month real-time operational evaluation under stressed conditions involving bad data and model errors, confirming SE+’s robustness and practical value; the results were presented at the NERC annual meeting hosted by SPP in October 2025 and documented in a paper accepted by IEEE Power & Energy Magazine (2026). Southwest Power Pool (SPP) has signed an installation agreement to deploy SE+ in its operational environment, while CAISO, ERCOT, and LCRA have engaged in detailed technical discussions and briefings. These collaborations demonstrate that SE+ is a production-ready, next-generation state estimation technology built for real utility operations, supporting modern grids facing growing demand, renewable integration, and extreme weather challenges.