- Project Owner
- Moss Landing Power Company, LLC
- Docket Number
- 99-AFC-04C
- Capacity
- 1,060 MW
- Location
- Monterey County
- Technology
- Combined Cycle
- Project Status
- Operational (Natural Gas-Fired)
- Project Type
- Application for Certification
The Moss Landing Power Plant Project (MLPP) is located at the intersection of Highway 1 and Dolan Road, east of the community of Moss Landing near the Moss Landing Harbor, Monterey County, at the existing Moss Landing Power Plant site.
MLPP is a 1,060-megawatt (MW) natural gas-fired, combined-cycle facility (separate from the original seven units) consisting of two power blocks. Each power block consists of two natural gas-fired combustion turbine generators (CTGs), two unfired heat recovery steam generators (HRSGs), and a reheat, condensing steam turbine generator (STG). Both power blocks use seawater for once-through cooling.
The Moss Landing facility was originally built and owned by Pacific Gas & Electric, beginning commercial operation in 1950.
- In 1998, PG&E sold the facility to Duke Energy North America (Duke Energy).
- In 2006, Duke Energy sold the plant to LS Power (LSP) Moss Landing LLC, a subsidiary of LSP General Finance Co. LLC.
- In April 2007, the power plant was purchased by Dynegy Moss Landing, LLC (DML), a subsidiary of Dynegy of Houston, Texas.
- On April 9, 2018, Vistra Energy merged with Dynegy and in 2020, Dynegy Moss Landing, LLC underwent an administrative name change to Moss Landing Power Company, LLC.
In October 2014, DML entered a Settlement Agreement with the California State Water Resources Control Board addressing requirements under the SWRCB's Water Quality Control Policy on the Use of Coastal and Estuarine Water for Power Plant Cooling. Paragraph 2.1.6.d in the Settlement Agreement states, "by December 31, 2016, Dynegy Moss Landing, LLC will install and operate variable speed drive controls on circulating water pumps serving Units 1 and 2."
On September 19, 2016, the California Energy Commission approved a Post-Certification Amendment (TN 213710) to allow the installation and operation of variable speed drive (VSD) controls on four of the six existing 4,160 Volt AC motors for the six circulating water pumps serving Units 1 and 2. The VSDs will allow the plant to reduce circulating water flow when the units are not operating at full capacity by automatically matching motor speed to specific unit cooling load demands and allow greater control in reducing cooling water flow during certain unit loads that will reduce entrainment and impingement of marine organisms.
- Settlement Agreement TN 242306 Submitted 3/9/2022 (Order No. 22-0309-2)
- Removal of Requirements and References to Two Non-Operational Boilers TN 238058 Submitted 06/14/2021
- Owner Name Change to Moss Landing Power Company, LLC TN 235932 Submitted 02/14/2020
- Settlement Agreement TN 225850 Submitted 11/08/2018 (Order No. 18-1107-4)
- Installation and Operation of Variable Speed Drive Controls TN 213710 Submitted 09/19/2016
- Boiler Replacement TN 58686 Submitted 09/31/2010
- Disposition of $250,000 Endowment Fund Change to the Verification for LAND-2 TN 210070 Submitted 12/18/2007
- Connection of Small Pilot Desalination Facility to Discharge Lines of Units 1 & 2 for Twelve-Months TN 41796 Submitted 08/06/2007 (Order No. 07-0801-04)
- Transfer of Ownership to Duke Energy Moss Landing, LLC TN 33514 Submitted 02/23/2005 (Order No. 05-0216-01e)
- Modification of Air Quality Conditions of Certification TN 30796 Submitted 01/29/2004 (Order No. 04-0121-07)
- Modification of Air Quality Conditions of Certification TN 28571 Submitted 04/24/2003 (Order No. 03-0416-01b)
- Modification of Condition of Certification LAND-1 TN 27460 Submitted 11/18/2002 (Order No. 02-1106-01a)
- Notice of Exemption for Integration of New or Re-Powered Generating Units with CAL-ISO TN 21938 Submitted 08/09/2001
- Additional Laydown Area TN 19147 Submitted 03/12/2001
- Additional Laydown Area and Re-Routing the Cooling Water Discharge System TN 16802 Submitted 11/21/2000
Attention: Non-hypertext items above will need to be requested from the Compliance Project Manager, along with the document TN number, if provided above.
Power Plant Certification and Exemption Processes
The CEC has the exclusive authority to certify all thermal power plants 50 megawatts (MW) and larger and related facilities proposed for construction in California. The Application for Certification (AFC) process is a certified regulatory program under the California Environmental Quality Act (CEQA). As a certified regulatory program, the CEC does not prepare environmental impact reports (EIRs) in an AFC proceeding, but instead prepares environmental assessment documents that are functionally equivalent to EIRs. A certificate issued by the CEC is in lieu of any permit, certificate, or similar document otherwise required by any state, local or regional agency, or federal agency to the extent permitted by federal law, and supersedes any applicable statute, ordinance, or regulation of any state, local, or regional agency, or federal agency to the extent permitted by federal law.
Original Proceeding
e-Commenting has been closed. Please submit your comments in compliance proceeding above.
Contacts
Project Manager
Ashley Gutierrez
CME@energy.ca.gov
(Please enter project name in the email subject line)
916-839-0400
Public Participation Questions
Public Advisor
publicadvisor@energy.ca.gov
916-269-9595
Media Inquiries
Media & Public Communications Office
mediaoffice@energy.ca.gov
916-654-4989