Customized SCADA systems to meet all solar PV project requirements

Nor-Cal’s turnkey SCADA systems include a Power Plant Controller (PPC) enabling site-wide substation and individual inverter and device level control, meeting all Utility IA, PPA and ISO requirements. 

Solar PV SCADA Solution Overview

Solar PV SCADA HMI Graphical Screens:

      • Web-based
      • Customizable
      • Allows for changes in settings and control modes
      • POI data: MW, MVar, Voltages, Currents
      • Breaker Control
      • Inverter Auto/Manual – Start/Stop control
      • Inverter data: MW, MVar, Voltages, Currents
      • Site Controller for real and reactive power commands in compliance with LGIA and PPA
      • Alarms and Events

Solar PV SCADA Power Plant Controller Functionalities:


  • Active Power Control (Control modes adjusted per market: CAISO, MISO, ERCOT).
  • AGC – Active Power Curtailment & Limit Control: irradiance ramp control, max POI limit regulation, ramp rate control
  • Setpoint Ramp Rate
  • Site Output Ramp Rate Control
  • Frequency Response
  • Automatic Voltage Regulation with various control modes:
  • Reactive Power Control Mode
  • Power Factor Control Mode
  • Voltage Control Mode (Droop)
  • Voltage Control Mode (setpoint)
  • Ramp Rate Control and Reactive Limits
  • Capacitor and Inductor Bank Control
  • Custom site/Utility/AHJ specific requirements


  • Emerson RX3i – PLC (Redundant as optional)
  • Full 19” SCADA rack with PPC – SCADA Server-Historian Server, Firewall, root Switches, Fiber and Cable management
  • Field communication enclosures (Field switches – Remote I/O, Fiber and cable management
  • MET Stations


  • Inductive Automation – Ignition HMI + Perspective
  • Canary Labs Historian
  • Emerson Machine Edition (PPC programing)
  • Kepware


On-site Integration & Testing:

  • Factory Acceptance Testing (FAT)
  • On-site commissioning support
  • Site Acceptance Testing (SAT)
  • Remote engineering and testing support through COD and Energization

Operator Training:

  • Remote, site specific SCADA system training (hardware and software)
  • Additional training options available upon request

On-going Maintenance and Support:

  • Remote, site specific SCADA system training (hardware and software)
  • Additional training options available upon request
  • Telephonic support
  • Monitored email support
  • Remote assistance using remote desktop and a virtual private network
  • Planned or emergency on-site support
  • Quarterly system health check

SCADA Support Services (“S3”)

Nor-Cal’s SCADA support services allows end users to utilize Nor-Cal’s dedicated team of experienced and knowledgeable engineers through a more proactive approach. Our team will have secure access to the operational system and will be readily available for any support or troubleshooting needs that arise through day-to-day operations. Utilizing this approach will ensure your systems will have the support they need to perform efficiently on a consistent basis.

Remote SCADA system network, alarm, and device troubleshooting support (software level) for any devices connected to the local SCADA system, including but not limited to:

  • Inverters
  • MV Transformers
  • Trackers
  • Substation IEDs
  • Weather Stations
  • Metering

Other related support services also available upon customer request and owner approval:

  • HMI and SCADA point list modifications
  • Project recovery/restore
  • Logic modifications and control tuning enhancements
  • Substation IEDs

Service offering also includes dispatchable on-site field technician support when needed, available upon customer request.

SCADA Support Services Brochure

Battery Manufacturer Experience
(Sample OEMS):