CAISO Services

Meter and Remote Intelligence Gateway (RIG) Engineering

Ulteig is a Metering and RIG third-party engineering firm and a CAISO approved Meter Inspection Company that offers in-house CAISO Authorized Inspector services. We offer design, execution and support services for any new or existing RIG and metering installation. Whether you’re looking towards beginning a new CAISO interconnection, reconfiguring an existing resource, performing a Qualified Facility (QF) conversion or maintaining an existing resource, Ulteig has the skillset and qualifications to make it happen.


CAISO stands for California Independent System Operator, a non-profit organization that manages the flow of electricity across the high-voltage, long-distance power lines that make up 80 percent of California’s power grid. CAISO is responsible for balancing the supply and demand of electricity, ensuring reliability and security, and facilitating a competitive and transparent market for electricity. CAISO also supports the integration of renewable energy sources and the reduction of greenhouse gas emissions.

  • Design review to maximize revenue, meet CAISO Tariff requirements, and minimize risk through simple and purposeful solutions
  • RIG and meter programming, installation and replacement for standard and complex schemes
  • RIG recertification and meter maintenance
  • Highly knowledgeable of CAISO approved and industry standard equipment in the energy industry:
    • RIG/RTAC: SEL Real Time Automation Controller (RTAC), Orion
    • Meters: SEL, Ion, Landis & Gyr, Electro Industries and others
  • Full RIG data integration to meet your SCADA data monitoring needs
  • RIG aggregation/disaggregation/reconfiguration
  • Equipment specification and purchasing
  • Troubleshooting and repair of failed equipment
  • Qualifying Facility (QF) conversion
  • Site surveys
  • Hand Held File (HHF) meter data retrieval
  • Remote access of CAISO ECN-connected equipment via our in-office ECN connection. This enables Ulteig, when appropriate, to remotely program, test, troubleshoot and monitor installed equipment

Ulteig is highly experienced in the CAISO New Resource Implementation (NRI) bucket process and requirements. Due to our consultants’ extensive years of experience managing CAISO projects and working directly with CAISO related Business Units, our consulting services will make the process as seamless, transparent and simple as possible. We will leverage our project management expertise to stay ahead of issues and pitfalls, monitor the progress of your project’s schedule and deliverables and provide the highest quality of support as your project approaches its Initial Synchronization Date and Commercial Operation Date (COD). NRI services include:

  • Project Schedule creation and tracking
  • Manage deliverable deadlines
  • Deliverable review and submission
  • Meetings
  • Coordination amongst all stakeholders of the CAISO project scope

with Us

From global energy producers to locally funded cities and private developers to government agencies, the clients we serve encompass a broad range of relationships and projects. Find out why Ulteig is a leader in the engineering industry.

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