CAISO 50-Point Evaluation Support Services

The CAISO 50-Point Evaluation is a critical step in the interconnection application process, designed to confirm that proposed projects are technically feasible and serious candidates for further study. Successfully passing this evaluation is essential for projects seeking to enter CAISO’s interconnection study cluster, reducing speculative applications and improving the efficiency of the study process.

At Green Matrix Partners (GMP), we provide expert support to help clients meet CAISO’s technical requirements by delivering comprehensive documentation and technical validation. Our services include preparing detailed affidavits or preliminary studies to confirm the project's technical feasibility, all of which are signed and stamped by a California-licensed Professional Engineer (PE) in compliance with CAISO standards.

Our CAISO 50-Point Evaluation Package includes:

  • Signed and Stamped Affidavits – Certifying the accuracy and feasibility of project details with a California EE PE’s endorsement.

  • Constraint Maps – Identifying development risks, environmental limitations, and optimal site conditions.

  • Site Layouts – Optimized designs to improve feasibility and system performance.

  • MV Collection Circuit Design – Detailed cable schedules and quantity take-off assessments.

  • Substation General Equipment Layout – Ensuring efficient equipment placement for grid connection.

  • Main Power Transformer (MPT) Sizing and Specifications – Accurate sizing to meet system requirements.

  • Technical Studies & Reports:

    • Short Circuit Study – Evaluating system stability and fault response.

    • Reactive Power Study – Ensuring compliance with grid support and voltage control requirements.

  • HV Gen-Tie Preliminary Design, Plan, and Profile – Outlining the high-voltage transmission connection to the grid.

With GMP’s comprehensive support and expertise in CAISO interconnection standards, our clients gain the technical rigor and documentation required to pass the evaluation successfully — ensuring their projects advance efficiently in the interconnection process.