CAISO Website
The California Independent System Operator (CAISO) operates a competitive wholesale electricity market and manages the reliability of its transmission grid. CAISO provides open access to the transmission and performs long-term planning. In managing the grid, CAISO centrally dispatches generation and coordinates the movement of wholesale electricity in California and a portion of Nevada. CAISOs markets include energy (day-ahead and real-time), ancillary services, and congestion revenue rights. CAISO also operates an Energy Imbalance Market (EIM), which currently includes CAISO and other balancing authority areas in the western United States.
List of Orders
Click on the categories below to view additional information.
Docket No.
Date Issued
Company
Title
ER24-2042-000 05/15/2025
California Independent System Operator Corporation
Order on Compliance
ER25-526-000 03/20/2025
California Independent System Operator Corporation
OALJ Certification of Uncontested Settlement
ER25-437-000
02/20/2025
California Independent System Operator Corporation
Order Accepting Tariff Revisions
Docket No.
Date Issued
Company
Title
ER24-155-000
07/25/2024
California Independent System Operator Corporation
Order on Compliance Filing
ER24-494-000
02/15/2024
California Independent System Operator Corporation
Letter Order Granting Request for Petition
ER24-355-000
02/15/2024
California Independent System Operator Corporation Letter Order Granting Petition
Docket No.
Date Issued
Company
Title
EL22-62-000
09/21/2023
California Independent System Operator Corporation
Order on Show Cause Proceeding
ER21-2455-003 05/18/2023
California Independent System Operator Corporation
Order on Compliance Filing
ER22-2362-000 04/20/2023
California Independent System Operator Corporation
Order On Compliance Filing
Docket No.
Date Issued
Company
Title
ER22-2730-000 12/15/22
California Independent System Operator Corporation
Letter Order Granting Petition
ER21-2455-002 10/20/22
California Independent System Operator Corporation
Order Addressing Arguments Raised on Rehearing and Granting Clarification
EL22-62-000 07/28/22
California Independent System Operator Corporation
Proposed Revisions to Credit Practices in Organized Wholesale Electric Markets
ER21-2455-000 06/17/22
California Independent System Operator Corporation
Order on Compliance Filing
ER22-1246-000 05/20/22
California Independent System Operator Corporation Order Accepting Tariff Revisions
ER20-1075-002 04/21/22
California Independent System Operator Corporation
Order on Remand
Docket No.
Date Issued
Company
Title
EL21-70-000 11/18/21
Luna Valley Solar I, LLC v. Pacific Gas and Electric Company and California Independent System Operator Corporation Order Denying Complaint
EL21-74-000 07/15/21
Nevada Power Company and Sierra Pacific Power Company v. California Independent System Operator Corporation Order Dismissing Complaint
ER04-835-014 06/17/21
California Independent System Operator Corporation Rehearing Work Item 1 of 1 Order Addressing Arguments Raised on Rehearing
EL20-69-001 06/17/21
CAlifornians for Renewable Energy, et al. v. California Independent System Operator Corporation, et al. EL20-69-001. Rehearing 1 of 1 Order Addressing Arguments Raised on Rehearing
EL00-95-291 05/20/21
San Diego Gas & Electric Company v. Sellers of Energy and Ancillary Services Order Accepting Settlement Overlay Compliance Filing
EL00-95-310 05/20/21
San Diego Gas & Electric Company v. Sellers of Energy and Ancillary Services Order Addressing Arguments Raised On Rehearing
EL00-95-301 05/20/21
San Diego Gas & Electric Company v. Sellers of Energy and Ancillary Services Order Addressing Arguments Raised on Rehearing
ER21-395-000 04/15/21
California Independent System Operator Corporation Order Dismissing Waiver Requests
EL20-69-000 03/18/21
CAlifornians for Renewable Energy, et al. v. California Independent System Operator Corporation, et al. Order Denying Complaint and Notice of Intent Not to Act
2020
Docket No.
Date Issued
Company
Title
ER20-2890-000 11/19/20
California Independent System Operator Corporation
Letter Order Accepting Tariff Revisions
ER20-2604-000 10/15/20
California Independent System Operator Corporation.
Letter Order Granting Distribution of Interconnection Study Proceeds
ER20-1890-000 09/17/20
California Independent System Operator Corporation
Order Accepting Tariff Revisions Subject to Condition
EL14-37-000 07/16/20
California Independent System Operator Corporation
Order on Compliance
ER19-468-002 07/16/20
California Independent System Operator Corporation
Order on Compliance Filing
ER19-2347-001 06/18/20
California Independent System Operator Corporation
Order Denying Rehearing and Granting Clarification
ER19-538-001 02/20/20
California Independent System Operator Corporation
Order Denying Rehearing
ER19-1950-000 02/20/20
California Independent System Operator Corporation
Order on Compliance
2019
Docket No.
Date Issued
Company
Title
ER19-468-000 11/21/19
California Independent System Operator Corp
Order on Compliance Filing
EL18-177-001 10/17/19
CXA La Paloma, LLC v. California Indep. Sys. Operator Corp.,
Order Denying Rehearing
EL19-81-000 10/17/19
Nevada Hydro Company, Inc. v. California Independent System Operator Corporation
Order Denying Complaint
ER18-1169-002 02/21/19
California Independent System Operator Corporation
Order on Rehearing
ER19-308-000 02/21/19
California Independent System Operator Corporation
Order Granting Petition
ER19-538-000 02/21/19
California Independent System Operator Corporation
Order on Tariff Revisions
2017
Docket No.
Date Issued
Company
Title
ER17-411-000 01/19/17
California Independent System Operator Corporation
Letter Order Accepting, Subject to Condition, CAISO’s Agreement to Procure Transferred Frequency Response From The City of Seattle, By and Through Its City Light Department
ER17-408-000 01/19/17
California Independent System Operator Corporation
Letter Order Accepting, Subject to Condition, CAISO’s Agreement to Procure Transferred Frequency Response From Bonneville Power Administration
2016
Docket No.
Date Issued
Company
Title
ER04-835-000, EL04-103-000, EL14-67-000, ER04-835-007, ER04-835-009, EL04-103-000, & EL04-103-004 10/20/16
California Independent System Operator Corporation
Order on Informational Refund Report, Complaint, And Informational Filing
ER16-1649-004, -005 10/20/16
California Independent System Operator Corporation
Order Granting Petition for Extension Of Limited Waiver and Dismissing Motion for Clarification
ER16-1649-000 06/01/16
California Independent System Operator Corporation
Order Accepting Tariff Revisions, Subject To Condition, and Establishing A Technical Conference
ER15-1825-001 03/17/16
California Independent System Operator Corporation
Order On Rehearing
ER15-1783-001 01/21/16
California Independent System Operator Corporation
Order Granting Clarification
2015
Docket No.
Date Issued
Company
Title
EL15-94-000 12/17/15
Shell Energy North America (US), L.P.
Order Denying Complaint And Granting Waiver
EL14-22-000 12/17/15
California Independent System Operator Corporation
Order On Compliance Filing
ER15-861-006 12/17/15
California Independent System Operator Corporation
Order On Compliance Filing
ER15-2588-000 11/19/15
Eastside Power Authority
Order Denying Waiver
ER15-2550-000 11/19/15
Rancho Cucamonga Municipal Utility
Order Denying Waiver
EL15-47-001 11/19/15
NextEra Desert Center Blythe, LLC
Order Denying Rehearing
ER15-861-004 11/19/15
California Independent System Operator Corporation
Order On Compliance Filing
ER15-2281-000, ER15-2282-001, and ER15-2283-000 11/19/15
Nevada Power Company
Order On Proposed Market-Based Rate Tariff Changes
ER15-2272-000 11/19/15
California Independent System Operator Corporation
Order Authorizing Mitigation At Energy Imbalance Market Interties
ER14-2017-001 11/19/15
California Independent System Operator Corporation
Order Accepting Compliance Filing
ER15-2623-000 and ER15-2625-000 11/19/15
Nevada Power Company
Order Rejecting Proposed Agreements
