Caiso Services

RIG and Meter Engineering

Ulteig is a RIG Third Party Engineering Firm and an Approved Meter Inspection Company that offers in-house CAISO Authorized Inspectors. We can design, execute and support any new and existing RIG and metering installation. Whether you’re performing a QF conversion or looking to participate in the market as a Distributed Energy Resource Provider (DERP), Ulteig has the skillset and qualifications to make it happen. Our services include:

  • Design review to maximize revenue, meet regulatory requirements and minimize risk through simple, purposeful solutions
  • RIG and meter programming, installation and replacement for standard and complex schemes; we can also perform RIG certification renewals
  • Use of standard equipment in the power industry: CAISO approved RIG: SEL Real Time Automation Controller (RTAC) and CAISO approved Meters: SEL, Ion, Landis & Gyr, Electro Industries and others
  • In-house or on-site testing of any RIG or meter application, including annual maintenance and testing programs
  • Full integration to meet your SCADA, data monitoring and revenue polling needs
  • Equipment specification and purchasing
  • Troubleshooting and repair of failed equipment
  • Qualifying Facility conversion
  • Site surveys
  • Load profile data retrieval
  • Remote access of CAISO-related equipment via our in-office ECN connection; this enables Ulteig, when appropriate, to remotely program, test, troubleshoot and monitor installed equipment

NRI Process Management

Ulteig is experienced in the CAISO New Resource Implementation (NRI) bucket process and requirements; our consulting services will make the process as seamless and transparent as possible. We will leverage our experience to stay ahead of issues and pitfalls, monitor the progress of your project’s schedule versus the deliverables and provide on-site and remote support as your project approaches its Commercial Operation Date (COD). NRI services include:

  • Design reviews
  • Milestone and deliverable tracking
  • Complete package from your first Project Details Form to Commercial Operation we can lead the process, manage document and information retrieval and submit documents to the ISO on your behalf

Ancillary Services

Ulteig can assist with, or fulfill additional requirements necessary at some CAISO facilities. Ancillary services can include:

  • Meteorological (Met) Station procurement, programming, installation and in-house and on-site testing for solar and wind generation facilities
  • Energy Communication Network (ECN) service access assistance; we can help with the paperwork and process to become a Connected Entity (CE) on the ECN


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.