PG&E Excess Supply Pilot

What is the XSP?

The Pacific Gas and Electric Company (PG&E) Excess Supply Demand Response program (XSP) demonstrates capabilities of demand-side resources to consume or decrease load as a service to the grid to address intermittency due to oversupply of renewables generation as distributed generation accelerates. Designed to capture the full value of flexible resources to the grid it has been incorporated into initiatives across various consumer types including the California Energy Commission EPIC Total Charge Management project, PG&E’s Electric Vehicle Charge Network Load Management Plan, and the Pittsburg USD School Bus Renewables Integration Project.

PG&E and Olivine are recipients of a 2019 PLMA Pacesetter award! See our post for more information.


Who Can Participate?
Subject to an enrollment cap, the XSP is open to aggregators within the PG&E service territory who can meet Pilot requirements.

What are the Pilot Participation Requirements?

As part of the requirements of the XSP, participants must:

  • Be capable of achieving a minimum increase of 30 kW across 2 hours
  • Be composed of one or more customer locations all within the same Sub Location Aggregation Point (Sub-LAP)
  • All customers must be inactive on any other demand response program (including PDP and SmartRate) for the duration of the pilot).
  • Make monthly capacity nominations at the resource level
  • Execute the appropriate participation agreements with Olivine
  • Be subject to ongoing eligibility checks by PG&E
Incentive Payments
• The basis for capacity and payments in the XSP is the CAISO “10-in-10” baseline with the increase in demand compared against that baseline.
• Offsets to demand charge increases are available with certain limitations
• All payments will be made to the Participant by Olivine


How Do I Get Involved?

Fill out the declaration of interest form and send it to


  1. XSP Presentation
  2. EVCN Presentation
  3. Pilot Declaration of Interest
  4. XSP FAQ


The latest report on the XSP is here: 2019 XSP Summary Report-Redacted

Previous reports are also available: 2018 XSP Summary Report_Redacted_R1, and 2017 XSP Summary Report-Redacted (covering 2015 through 2017).