# Lodi Energy Center

CAISO Natural Gas Fired Combined Cycle · https://askthegrid.com/assets/facilities/lodi-energy-center

Lodi Energy Center is a natural gas-fired power facility with 288.9 MW of EIA-reported nameplate capacity in San Joaquin County, California, registered as EIA Plant ID 57978. Northern California Power Agny is the registered plant entity or operator. NCPA describes Lodi Energy Center as the first U.S. plant to use fast-start gas-turbine technology, enabling rapid ramping to balance variable wind and solar generation. The CEC describes the project as nominally 296 MW, while the operational EIA-derived record lists 288.9 MW. Commercial operation began on November 1, 2012.
LODIEC_2_PL1X2-APND · 230 kV · Pacific Gas and Electric Company (PG&E).

## Key facts

- Technology: Natural Gas Fired Combined Cycle
- Power capacity: 288.9 MW
- Operating status: operating

## Grid and market context

- ISO/RTO: CAISO
- Balancing authority: CAISO

## Source-backed facts

- Owner logo domain: ncpa.com — Lodi Energy Center | NCPA · confidence: medium
- Identifiers: [{"value":"57978","system":"EIA plant ID"},{"value":"CISO","system":"Balancing authority code"},{"value":"LODIEC_2_PL1X2","system":"CAISO physical resource ID"},{"value":"Q267","system":"CAISO queue position"},{"value":"08-AFC-10","system":"California Energy Commission docket"}] — Source · confidence: high
- Identifiers: [{"value":"57978","system":"EIA plant ID"},{"value":"CISO","system":"Balancing authority code"},{"value":"LODIEC_2_PL1X2","system":"CAISO physical resource ID"},{"value":"Q267","system":"CAISO queue position"},{"value":"08-AFC-10","system":"California Energy Commission docket"}] — Source · confidence: high
- Identifiers: [{"value":"57978","system":"EIA plant ID"},{"value":"CISO","system":"Balancing authority code"},{"value":"LODIEC_2_PL1X2","system":"CAISO physical resource ID"},{"value":"Q267","system":"CAISO queue position"},{"value":"08-AFC-10","system":"California Energy Commission docket"}] — Lodi Energy Center | California Energy Commission · confidence: high
- Owner name: Northern California Power Agency (NCPA) — Lodi Energy Center | California Energy Commission · confidence: high
- Description: Lodi Energy Center is a natural-gas-fired combined-cycle generating facility in Lodi, San Joaquin County, California. The facility began commercial operation in November 2012 and is owned and operated by the Northern California Power Agency. The California Energy Commission describes the project as nominally 296 MW, while the operational EIA record lists 288.9 MW. The plant uses one combustion turbine generator and one condensing steam turbine generator. — Lodi Energy Center | California Energy Commission · confidence: medium
- Canonical name: Lodi Energy Center — Lodi Energy Center | California Energy Commission · confidence: high
- Identifiers.2: {"value":"LODIEC_2_PL1X2","system":"CAISO physical resource ID"} — Source · confidence: high
- Identifiers.3: {"value":"Q267","system":"CAISO queue position"} — Source · confidence: high
- Identifiers.4: {"value":"08-AFC-10","system":"California Energy Commission docket"} — Lodi Energy Center | California Energy Commission · confidence: high
- Parties.0: {"relationship":"Owner, operator, and developer","name":"Northern California Power Agency (NCPA)","official_url":"https://www.ncpa.com"} — Lodi Energy Center | NCPA · confidence: high
- Parties.1: {"relationship":"California thermal-power permitting authority","name":"California Energy Commission","official_url":"https://www.energy.ca.gov"} — Lodi Energy Center | California Energy Commission · confidence: high
- Parties.4: {"relationship":"Host landowner and wastewater-service provider","name":"City of Lodi","official_url":null} — Lodi Energy Center | California Energy Commission · confidence: high
- Parties.5: {"relationship":"Construction manager and detail engineer","name":"WorleyParsons","official_url":"https://www.worley.com"} — Source · confidence: medium
- Parties.6: {"relationship":"General contractor","name":"ARB","official_url":null} — Source · confidence: medium
- Parties.7: {"relationship":"Electrical contractor","name":"Cupertino Electric, Inc.","official_url":"https://www.cei.com"} — The Lodi Energy Center Power Generation Facility · confidence: high
- Parties.8: {"relationship":"Gas-turbine and steam-turbine OEM","name":"Siemens Energy","official_url":"https://www.siemens-energy.com"} — TOP PLANTS: Lodi Energy Center, Lodi, California · confidence: medium
- Parties.9: {"relationship":"HRSG and auxiliary-boiler supplier","name":"Nooter/Eriksen","official_url":"https://www.nooter-eriksen.com"} — TOP PLANTS: Lodi Energy Center, Lodi, California · confidence: medium
- Parties.10: {"relationship":"Cooling-tower supplier","name":"SPX","official_url":"https://www.spx.com"} — TOP PLANTS: Lodi Energy Center, Lodi, California · confidence: medium
- Parties.11: {"relationship":"Named project participant and energy user","name":"California Department of Water Resources","official_url":"https://water.ca.gov"} — TOP PLANTS: Lodi Energy Center, Lodi, California · confidence: high
- Parties.11: {"relationship":"Named project participant and energy user","name":"California Department of Water Resources","official_url":"https://water.ca.gov"} — Local officials dedicate cutting-edge Lodi Energy Center · confidence: high
- Parties.12: {"relationship":"Named project participant and energy user","name":"Bay Area Rapid Transit District","official_url":"https://www.bart.gov"} — TOP PLANTS: Lodi Energy Center, Lodi, California · confidence: medium
- Parties.13: {"relationship":"Named project participant","name":"City of Ukiah","official_url":null} — TOP PLANTS: Lodi Energy Center, Lodi, California · confidence: medium
- Parties.14: {"relationship":"Named project participant","name":"City of Biggs","official_url":null} — TOP PLANTS: Lodi Energy Center, Lodi, California · confidence: medium
- Parties.15: {"relationship":"Named project participant","name":"City of Azusa","official_url":"https://www.azusaca.gov"} — TOP PLANTS: Lodi Energy Center, Lodi, California · confidence: medium
- Parties.16: {"relationship":"Named project participant","name":"City of Lompoc","official_url":null} — TOP PLANTS: Lodi Energy Center, Lodi, California · confidence: medium
- Parties.17: {"relationship":"Named project participant","name":"City of Santa Clara","official_url":"https://www.santaclaraca.gov"} — TOP PLANTS: Lodi Energy Center, Lodi, California · confidence: medium
- Parties.18: {"relationship":"Named project participant","name":"City of Healdsburg","official_url":null} — TOP PLANTS: Lodi Energy Center, Lodi, California · confidence: medium
- Parties.19: {"relationship":"Named project participant","name":"City of Gridley","official_url":null} — TOP PLANTS: Lodi Energy Center, Lodi, California · confidence: medium
- Power mw: 288.9 — Source · confidence: medium
- Construction scope: The Lodi Energy Center is a 1x1, nominal 296 MW natural-gas combined-cycle facility. The installed scope includes one Siemens gas turbine-generator, one Siemens condensing steam turbine-generator, one heat-recovery steam generator, one natural-gas auxiliary boiler, one seven-cell cooling tower, water-treatment and cooling systems, and associated balance-of-plant equipment. CEI reports 135 MVA for the combustion-turbine generator and 115 MVA for the steam-turbine generator; POWER identifies additional installed equipment including the Siemens T3000 control system, Nooter/Eriksen HRSG/auxiliary boiler, SPX cooling tower, and associated pumps, compressors, condenser, transformers, and water-treatment equipment. — The Lodi Energy Center Power Generation Facility · confidence: high
- Construction scope: The Lodi Energy Center is a 1x1, nominal 296 MW natural-gas combined-cycle facility. The installed scope includes one Siemens gas turbine-generator, one Siemens condensing steam turbine-generator, one heat-recovery steam generator, one natural-gas auxiliary boiler, one seven-cell cooling tower, water-treatment and cooling systems, and associated balance-of-plant equipment. CEI reports 135 MVA for the combustion-turbine generator and 115 MVA for the steam-turbine generator; POWER identifies additional installed equipment including the Siemens T3000 control system, Nooter/Eriksen HRSG/auxiliary boiler, SPX cooling tower, and associated pumps, compressors, condenser, transformers, and water-treatment equipment. — TOP PLANTS: Lodi Energy Center, Lodi, California · confidence: high
- Product url: https://www.siemens-energy.com/global/en/home/products-services/product/sgt6-5000f.html — SGT6-5000F Heavy-duty gas turbine (60 Hz) · confidence: high
- Kind: thermal — Lodi Energy Center - California Energy Commission - CA.gov · confidence: high
- Manufacturer domain: siemens-energy.com — TOP PLANTS: Lodi Energy Center, Lodi, California · confidence: high
- Equipment models: [{"manufacturer_domain":"siemens-energy.com","product_url":"https://www.siemens-energy.com/global/en/home/products-services/product/sgt6-5000f.html","count":1,"unit_mw":185,"name":"SGT6-5000F gas turbine"},{"manufacturer_domain":"siemens-energy.com","product_url":"https://www.siemens-energy.com/global/en/home/products-services/product/industrial-steam-turbines.html","count":1,"unit_mw":null,"name":"SST-900RH steam turbine"}] — TOP PLANTS: Lodi Energy Center, Lodi, California · confidence: medium
- Product family: SGT6-5000F gas turbine and SST-900RH steam turbine — TOP PLANTS: Lodi Energy Center, Lodi, California · confidence: medium
- Manufacturer name: Siemens Energy — TOP PLANTS: Lodi Energy Center, Lodi, California · confidence: high
- Equipment models.0: {"manufacturer_domain":"siemens-energy.com","product_url":"https://www.siemens-energy.com/global/en/home/products-services/product/sgt6-5000f.html","count":1,"unit_mw":185,"name":"SGT6-5000F gas turbine"} — TOP PLANTS: Lodi Energy Center, Lodi, California · confidence: medium
- Equipment models.1: {"manufacturer_domain":"siemens-energy.com","product_url":"https://www.siemens-energy.com/global/en/home/products-services/product/industrial-steam-turbines.html","count":1,"unit_mw":null,"name":"SST-900RH steam turbine"} — TOP PLANTS: Lodi Energy Center, Lodi, California · confidence: medium
- Description: Lodi Energy Center is a natural-gas-fired, 1x1 combined-cycle facility in Lodi, San Joaquin County, with one combustion-turbine generator, one condensing steam-turbine generator, a heat-recovery steam generator, auxiliary boiler, and cooling tower. Northern California Power Agency owns and operates the plant on a site adjacent to the City of Lodi’s White Slough Water Pollution Control Facility. The CEC certified the project in April 2010, construction began in August 2010, and the facility entered commercial operation in November 2012. In March 2025, the CEC approved a Siemens FX hot-gas-path upgrade intended to improve turbine efficiency and provide up to 15 MW of additional ambient-condition output. — Lodi Energy Center | California Energy Commission · confidence: medium
- Description: Lodi Energy Center is a natural-gas-fired, 1x1 combined-cycle facility in Lodi, San Joaquin County, with one combustion-turbine generator, one condensing steam-turbine generator, a heat-recovery steam generator, auxiliary boiler, and cooling tower. Northern California Power Agency owns and operates the plant on a site adjacent to the City of Lodi’s White Slough Water Pollution Control Facility. The CEC certified the project in April 2010, construction began in August 2010, and the facility entered commercial operation in November 2012. In March 2025, the CEC approved a Siemens FX hot-gas-path upgrade intended to improve turbine efficiency and provide up to 15 MW of additional ambient-condition output. — Lodi Energy Center | NCPA · confidence: medium
- Description: Lodi Energy Center is a natural-gas-fired, 1x1 combined-cycle facility in Lodi, San Joaquin County, with one combustion-turbine generator, one condensing steam-turbine generator, a heat-recovery steam generator, auxiliary boiler, and cooling tower. Northern California Power Agency owns and operates the plant on a site adjacent to the City of Lodi’s White Slough Water Pollution Control Facility. The CEC certified the project in April 2010, construction began in August 2010, and the facility entered commercial operation in November 2012. In March 2025, the CEC approved a Siemens FX hot-gas-path upgrade intended to improve turbine efficiency and provide up to 15 MW of additional ambient-condition output. — Source · confidence: medium
- Quality notes: ["Capacity differs by source: the CEC describes a nominal 296 MW project, while the operational EIA-derived record lists 288.9 MW across two generators.","Commercial-operation dates differ among records: the CEC lists November 1, 2012; NCPA interconnection materials list November 21, 2012; and NCPA’s fiscal-2013 annual report states November 27, 2012. The CEC date is used as the regulatory project date.","A 24 MW LECU expansion associated with CAISO queue position Q945 was documented in 2015, but the operational record continues to show two generators totaling 288.9 MW; it is not treated as a completed expansion.","No separate project acquisition, sale, predecessor owner, buyer, seller, or transaction month/year is identified in the project records. The approximately $140 million Siemens power-island purchase was equipment procurement for an NCPA-developed project, not disclosed plant-sale consideration."] — Lodi Energy Center | California Energy Commission · confidence: medium
- Quality notes: ["Capacity differs by source: the CEC describes a nominal 296 MW project, while the operational EIA-derived record lists 288.9 MW across two generators.","Commercial-operation dates differ among records: the CEC lists November 1, 2012; NCPA interconnection materials list November 21, 2012; and NCPA’s fiscal-2013 annual report states November 27, 2012. The CEC date is used as the regulatory project date.","A 24 MW LECU expansion associated with CAISO queue position Q945 was documented in 2015, but the operational record continues to show two generators totaling 288.9 MW; it is not treated as a completed expansion.","No separate project acquisition, sale, predecessor owner, buyer, seller, or transaction month/year is identified in the project records. The approximately $140 million Siemens power-island purchase was equipment procurement for an NCPA-developed project, not disclosed plant-sale consideration."] — Agenda · confidence: medium
- Quality notes: ["Capacity differs by source: the CEC describes a nominal 296 MW project, while the operational EIA-derived record lists 288.9 MW across two generators.","Commercial-operation dates differ among records: the CEC lists November 1, 2012; NCPA interconnection materials list November 21, 2012; and NCPA’s fiscal-2013 annual report states November 27, 2012. The CEC date is used as the regulatory project date.","A 24 MW LECU expansion associated with CAISO queue position Q945 was documented in 2015, but the operational record continues to show two generators totaling 288.9 MW; it is not treated as a completed expansion.","No separate project acquisition, sale, predecessor owner, buyer, seller, or transaction month/year is identified in the project records. The approximately $140 million Siemens power-island purchase was equipment procurement for an NCPA-developed project, not disclosed plant-sale consideration."] — Source · confidence: medium
- Quality notes: ["Capacity differs by source: the CEC describes a nominal 296 MW project, while the operational EIA-derived record lists 288.9 MW across two generators.","Commercial-operation dates differ among records: the CEC lists November 1, 2012; NCPA interconnection materials list November 21, 2012; and NCPA’s fiscal-2013 annual report states November 27, 2012. The CEC date is used as the regulatory project date.","A 24 MW LECU expansion associated with CAISO queue position Q945 was documented in 2015, but the operational record continues to show two generators totaling 288.9 MW; it is not treated as a completed expansion.","No separate project acquisition, sale, predecessor owner, buyer, seller, or transaction month/year is identified in the project records. The approximately $140 million Siemens power-island purchase was equipment procurement for an NCPA-developed project, not disclosed plant-sale consideration."] — Lodi Energy Center will generate enough power for almost... · confidence: medium
- Financing summary: Construction financing was arranged through NCPA revenue bonds rather than an acquisition transaction. Issue One 2010 bonds totaled $249.175 million, comprising tax-exempt Series A and taxable direct-pay Build America Bonds Series B; Fitch stated that they were expected to sell through negotiation in mid-June 2010 and were secured by take-or-pay power-sales agreements with 11 Group A participants. Issue Two 2010 bonds totaled $140.765 million—$30.540 million Series A and $110.225 million Series B—dated June 24, 2010, and financed the California Department of Water Resources’ share of construction costs. The Issue Two official statement estimated total construction costs at approximately $375 million; Modesto Irrigation District’s share was financed separately through its own electric-system revenue bonds. The approximately $140 million Siemens power-island procurement was equipment cost, not project financing or sale consideration. — Fitch Rates Northern California Power Agency's (NCPA) Lodi Energy Center Issue One 2010 Bonds 'A-' · confidence: medium
- Financing summary: Construction financing was arranged through NCPA revenue bonds rather than an acquisition transaction. Issue One 2010 bonds totaled $249.175 million, comprising tax-exempt Series A and taxable direct-pay Build America Bonds Series B; Fitch stated that they were expected to sell through negotiation in mid-June 2010 and were secured by take-or-pay power-sales agreements with 11 Group A participants. Issue Two 2010 bonds totaled $140.765 million—$30.540 million Series A and $110.225 million Series B—dated June 24, 2010, and financed the California Department of Water Resources’ share of construction costs. The Issue Two official statement estimated total construction costs at approximately $375 million; Modesto Irrigation District’s share was financed separately through its own electric-system revenue bonds. The approximately $140 million Siemens power-island procurement was equipment cost, not project financing or sale consideration. — Source · confidence: medium
- Financing summary: Construction financing was arranged through NCPA revenue bonds rather than an acquisition transaction. Issue One 2010 bonds totaled $249.175 million, comprising tax-exempt Series A and taxable direct-pay Build America Bonds Series B; Fitch stated that they were expected to sell through negotiation in mid-June 2010 and were secured by take-or-pay power-sales agreements with 11 Group A participants. Issue Two 2010 bonds totaled $140.765 million—$30.540 million Series A and $110.225 million Series B—dated June 24, 2010, and financed the California Department of Water Resources’ share of construction costs. The Issue Two official statement estimated total construction costs at approximately $375 million; Modesto Irrigation District’s share was financed separately through its own electric-system revenue bonds. The approximately $140 million Siemens power-island procurement was equipment cost, not project financing or sale consideration. — Lodi Energy Center will generate enough power for almost... · confidence: medium
- Timeline: [{"event":"Early project development","date":"2008","detail":"NCPA’s project term sheet described a planned natural-gas-fired combined-cycle station in Lodi, adjacent to NCPA’s existing combustion-turbine project and the City of Lodi’s White Slough water-treatment facility."},{"event":"CEC certification","date":"2010-04-21","detail":"The California Energy Commission certified the project under docket 08-AFC-10."},{"event":"Issue One construction financing","date":"2010-06","detail":"NCPA’s Issue One 2010 revenue bonds totaled $249.175 million; Fitch stated that the bonds were expected to sell through negotiation in mid-June and would be secured by take-or-pay power-sales agreements with 11 Group A participants."},{"event":"Issue Two construction financing","date":"2010-06-24","detail":"NCPA’s Issue Two 2010 bonds for the California Department of Water Resources totaled $140.765 million, consisting of $30.540 million tax-exempt Series A bonds and $110.225 million taxable direct-pay Build America Bonds Series B."},{"event":"Construction start","date":"2010-08","detail":"NCPA’s fiscal-2013 annual report states that construction began in August 2010."},{"event":"Commercial operation","date":"2012-11-01","detail":"The CEC records commercial operation beginning November 1, 2012. Other NCPA records report November 21 or November 27, 2012."},{"event":"Startup and emissions amendment","date":"2013-08-28","detail":"The CEC approved modifications addressing startup emissions, gas-turbine combustor tuning, SCR operating temperatures, and volumetric-flow-meter requirements."},{"event":"Wastewater permitting amendment","date":"2014-08-20","detail":"The CEC approved a post-certification amendment addressing wastewater disposal and underground-injection-well permitting."},{"event":"Proposed 24 MW expansion","date":"2015-12","detail":"NCPA and CAISO materials described the 24 MW LECU project at queue position Q945 as an expansion of the existing Q267 Lodi Energy Center and requested a 2016 commercial-operation date, but the materials do not establish that it entered operation."},{"event":"Permanent storage-area amendment","date":"2020-06-04","detail":"The CEC approved adding 2.323 acres adjacent to the site to the Lodi Energy Center project description for storage use."},{"event":"Siemens FX turbine upgrade approved","date":"2025-03-18","detail":"The CEC approved Siemens FX hot-gas-path components, including new blades, seals, vanes, and vane carriers for turbine stages 1 through 4; the amendment stated that the upgrade could provide an additional 15 MW under ambient conditions."}] — Microsoft Word - 47B1B593-578E-088DEA.doc · confidence: medium
- Timeline: [{"event":"Early project development","date":"2008","detail":"NCPA’s project term sheet described a planned natural-gas-fired combined-cycle station in Lodi, adjacent to NCPA’s existing combustion-turbine project and the City of Lodi’s White Slough water-treatment facility."},{"event":"CEC certification","date":"2010-04-21","detail":"The California Energy Commission certified the project under docket 08-AFC-10."},{"event":"Issue One construction financing","date":"2010-06","detail":"NCPA’s Issue One 2010 revenue bonds totaled $249.175 million; Fitch stated that the bonds were expected to sell through negotiation in mid-June and would be secured by take-or-pay power-sales agreements with 11 Group A participants."},{"event":"Issue Two construction financing","date":"2010-06-24","detail":"NCPA’s Issue Two 2010 bonds for the California Department of Water Resources totaled $140.765 million, consisting of $30.540 million tax-exempt Series A bonds and $110.225 million taxable direct-pay Build America Bonds Series B."},{"event":"Construction start","date":"2010-08","detail":"NCPA’s fiscal-2013 annual report states that construction began in August 2010."},{"event":"Commercial operation","date":"2012-11-01","detail":"The CEC records commercial operation beginning November 1, 2012. Other NCPA records report November 21 or November 27, 2012."},{"event":"Startup and emissions amendment","date":"2013-08-28","detail":"The CEC approved modifications addressing startup emissions, gas-turbine combustor tuning, SCR operating temperatures, and volumetric-flow-meter requirements."},{"event":"Wastewater permitting amendment","date":"2014-08-20","detail":"The CEC approved a post-certification amendment addressing wastewater disposal and underground-injection-well permitting."},{"event":"Proposed 24 MW expansion","date":"2015-12","detail":"NCPA and CAISO materials described the 24 MW LECU project at queue position Q945 as an expansion of the existing Q267 Lodi Energy Center and requested a 2016 commercial-operation date, but the materials do not establish that it entered operation."},{"event":"Permanent storage-area amendment","date":"2020-06-04","detail":"The CEC approved adding 2.323 acres adjacent to the site to the Lodi Energy Center project description for storage use."},{"event":"Siemens FX turbine upgrade approved","date":"2025-03-18","detail":"The CEC approved Siemens FX hot-gas-path components, including new blades, seals, vanes, and vane carriers for turbine stages 1 through 4; the amendment stated that the upgrade could provide an additional 15 MW under ambient conditions."}] — Lodi Energy Center | California Energy Commission · confidence: medium
- Timeline: [{"event":"Early project development","date":"2008","detail":"NCPA’s project term sheet described a planned natural-gas-fired combined-cycle station in Lodi, adjacent to NCPA’s existing combustion-turbine project and the City of Lodi’s White Slough water-treatment facility."},{"event":"CEC certification","date":"2010-04-21","detail":"The California Energy Commission certified the project under docket 08-AFC-10."},{"event":"Issue One construction financing","date":"2010-06","detail":"NCPA’s Issue One 2010 revenue bonds totaled $249.175 million; Fitch stated that the bonds were expected to sell through negotiation in mid-June and would be secured by take-or-pay power-sales agreements with 11 Group A participants."},{"event":"Issue Two construction financing","date":"2010-06-24","detail":"NCPA’s Issue Two 2010 bonds for the California Department of Water Resources totaled $140.765 million, consisting of $30.540 million tax-exempt Series A bonds and $110.225 million taxable direct-pay Build America Bonds Series B."},{"event":"Construction start","date":"2010-08","detail":"NCPA’s fiscal-2013 annual report states that construction began in August 2010."},{"event":"Commercial operation","date":"2012-11-01","detail":"The CEC records commercial operation beginning November 1, 2012. Other NCPA records report November 21 or November 27, 2012."},{"event":"Startup and emissions amendment","date":"2013-08-28","detail":"The CEC approved modifications addressing startup emissions, gas-turbine combustor tuning, SCR operating temperatures, and volumetric-flow-meter requirements."},{"event":"Wastewater permitting amendment","date":"2014-08-20","detail":"The CEC approved a post-certification amendment addressing wastewater disposal and underground-injection-well permitting."},{"event":"Proposed 24 MW expansion","date":"2015-12","detail":"NCPA and CAISO materials described the 24 MW LECU project at queue position Q945 as an expansion of the existing Q267 Lodi Energy Center and requested a 2016 commercial-operation date, but the materials do not establish that it entered operation."},{"event":"Permanent storage-area amendment","date":"2020-06-04","detail":"The CEC approved adding 2.323 acres adjacent to the site to the Lodi Energy Center project description for storage use."},{"event":"Siemens FX turbine upgrade approved","date":"2025-03-18","detail":"The CEC approved Siemens FX hot-gas-path components, including new blades, seals, vanes, and vane carriers for turbine stages 1 through 4; the amendment stated that the upgrade could provide an additional 15 MW under ambient conditions."}] — Fitch Rates Northern California Power Agency's (NCPA) Lodi Energy Center Issue One 2010 Bonds 'A-' · confidence: medium
- Timeline: [{"event":"Early project development","date":"2008","detail":"NCPA’s project term sheet described a planned natural-gas-fired combined-cycle station in Lodi, adjacent to NCPA’s existing combustion-turbine project and the City of Lodi’s White Slough water-treatment facility."},{"event":"CEC certification","date":"2010-04-21","detail":"The California Energy Commission certified the project under docket 08-AFC-10."},{"event":"Issue One construction financing","date":"2010-06","detail":"NCPA’s Issue One 2010 revenue bonds totaled $249.175 million; Fitch stated that the bonds were expected to sell through negotiation in mid-June and would be secured by take-or-pay power-sales agreements with 11 Group A participants."},{"event":"Issue Two construction financing","date":"2010-06-24","detail":"NCPA’s Issue Two 2010 bonds for the California Department of Water Resources totaled $140.765 million, consisting of $30.540 million tax-exempt Series A bonds and $110.225 million taxable direct-pay Build America Bonds Series B."},{"event":"Construction start","date":"2010-08","detail":"NCPA’s fiscal-2013 annual report states that construction began in August 2010."},{"event":"Commercial operation","date":"2012-11-01","detail":"The CEC records commercial operation beginning November 1, 2012. Other NCPA records report November 21 or November 27, 2012."},{"event":"Startup and emissions amendment","date":"2013-08-28","detail":"The CEC approved modifications addressing startup emissions, gas-turbine combustor tuning, SCR operating temperatures, and volumetric-flow-meter requirements."},{"event":"Wastewater permitting amendment","date":"2014-08-20","detail":"The CEC approved a post-certification amendment addressing wastewater disposal and underground-injection-well permitting."},{"event":"Proposed 24 MW expansion","date":"2015-12","detail":"NCPA and CAISO materials described the 24 MW LECU project at queue position Q945 as an expansion of the existing Q267 Lodi Energy Center and requested a 2016 commercial-operation date, but the materials do not establish that it entered operation."},{"event":"Permanent storage-area amendment","date":"2020-06-04","detail":"The CEC approved adding 2.323 acres adjacent to the site to the Lodi Energy Center project description for storage use."},{"event":"Siemens FX turbine upgrade approved","date":"2025-03-18","detail":"The CEC approved Siemens FX hot-gas-path components, including new blades, seals, vanes, and vane carriers for turbine stages 1 through 4; the amendment stated that the upgrade could provide an additional 15 MW under ambient conditions."}] — Source · confidence: medium
- Timeline: [{"event":"Early project development","date":"2008","detail":"NCPA’s project term sheet described a planned natural-gas-fired combined-cycle station in Lodi, adjacent to NCPA’s existing combustion-turbine project and the City of Lodi’s White Slough water-treatment facility."},{"event":"CEC certification","date":"2010-04-21","detail":"The California Energy Commission certified the project under docket 08-AFC-10."},{"event":"Issue One construction financing","date":"2010-06","detail":"NCPA’s Issue One 2010 revenue bonds totaled $249.175 million; Fitch stated that the bonds were expected to sell through negotiation in mid-June and would be secured by take-or-pay power-sales agreements with 11 Group A participants."},{"event":"Issue Two construction financing","date":"2010-06-24","detail":"NCPA’s Issue Two 2010 bonds for the California Department of Water Resources totaled $140.765 million, consisting of $30.540 million tax-exempt Series A bonds and $110.225 million taxable direct-pay Build America Bonds Series B."},{"event":"Construction start","date":"2010-08","detail":"NCPA’s fiscal-2013 annual report states that construction began in August 2010."},{"event":"Commercial operation","date":"2012-11-01","detail":"The CEC records commercial operation beginning November 1, 2012. Other NCPA records report November 21 or November 27, 2012."},{"event":"Startup and emissions amendment","date":"2013-08-28","detail":"The CEC approved modifications addressing startup emissions, gas-turbine combustor tuning, SCR operating temperatures, and volumetric-flow-meter requirements."},{"event":"Wastewater permitting amendment","date":"2014-08-20","detail":"The CEC approved a post-certification amendment addressing wastewater disposal and underground-injection-well permitting."},{"event":"Proposed 24 MW expansion","date":"2015-12","detail":"NCPA and CAISO materials described the 24 MW LECU project at queue position Q945 as an expansion of the existing Q267 Lodi Energy Center and requested a 2016 commercial-operation date, but the materials do not establish that it entered operation."},{"event":"Permanent storage-area amendment","date":"2020-06-04","detail":"The CEC approved adding 2.323 acres adjacent to the site to the Lodi Energy Center project description for storage use."},{"event":"Siemens FX turbine upgrade approved","date":"2025-03-18","detail":"The CEC approved Siemens FX hot-gas-path components, including new blades, seals, vanes, and vane carriers for turbine stages 1 through 4; the amendment stated that the upgrade could provide an additional 15 MW under ambient conditions."}] — Source · confidence: medium
- Timeline: [{"event":"Early project development","date":"2008","detail":"NCPA’s project term sheet described a planned natural-gas-fired combined-cycle station in Lodi, adjacent to NCPA’s existing combustion-turbine project and the City of Lodi’s White Slough water-treatment facility."},{"event":"CEC certification","date":"2010-04-21","detail":"The California Energy Commission certified the project under docket 08-AFC-10."},{"event":"Issue One construction financing","date":"2010-06","detail":"NCPA’s Issue One 2010 revenue bonds totaled $249.175 million; Fitch stated that the bonds were expected to sell through negotiation in mid-June and would be secured by take-or-pay power-sales agreements with 11 Group A participants."},{"event":"Issue Two construction financing","date":"2010-06-24","detail":"NCPA’s Issue Two 2010 bonds for the California Department of Water Resources totaled $140.765 million, consisting of $30.540 million tax-exempt Series A bonds and $110.225 million taxable direct-pay Build America Bonds Series B."},{"event":"Construction start","date":"2010-08","detail":"NCPA’s fiscal-2013 annual report states that construction began in August 2010."},{"event":"Commercial operation","date":"2012-11-01","detail":"The CEC records commercial operation beginning November 1, 2012. Other NCPA records report November 21 or November 27, 2012."},{"event":"Startup and emissions amendment","date":"2013-08-28","detail":"The CEC approved modifications addressing startup emissions, gas-turbine combustor tuning, SCR operating temperatures, and volumetric-flow-meter requirements."},{"event":"Wastewater permitting amendment","date":"2014-08-20","detail":"The CEC approved a post-certification amendment addressing wastewater disposal and underground-injection-well permitting."},{"event":"Proposed 24 MW expansion","date":"2015-12","detail":"NCPA and CAISO materials described the 24 MW LECU project at queue position Q945 as an expansion of the existing Q267 Lodi Energy Center and requested a 2016 commercial-operation date, but the materials do not establish that it entered operation."},{"event":"Permanent storage-area amendment","date":"2020-06-04","detail":"The CEC approved adding 2.323 acres adjacent to the site to the Lodi Energy Center project description for storage use."},{"event":"Siemens FX turbine upgrade approved","date":"2025-03-18","detail":"The CEC approved Siemens FX hot-gas-path components, including new blades, seals, vanes, and vane carriers for turbine stages 1 through 4; the amendment stated that the upgrade could provide an additional 15 MW under ambient conditions."}] — Agenda · confidence: medium

## Timeline

- 2008 — Early project development
  NCPA’s project term sheet described a planned natural-gas-fired combined-cycle station in Lodi, adjacent to NCPA’s existing combustion-turbine project and the City of Lodi’s White Slough water-treatment facility.
  Source: Microsoft Word - 47B1B593-578E-088DEA.doc (https://www.azusaca.gov/DocumentView.asp?DID=579)
- 2010-04-21 — CEC certification
  The California Energy Commission certified the project under docket 08-AFC-10.
  Source: Lodi Energy Center | California Energy Commission (https://www.energy.ca.gov/powerplant/combined-cycle/lodi-energy-center)
- 2010-06-24 — Issue Two construction financing
  NCPA’s Issue Two 2010 bonds for the California Department of Water Resources totaled $140.765 million, consisting of $30.540 million tax-exempt Series A bonds and $110.225 million taxable direct-pay Build America Bonds Series B.
  Source: Source (https://ncpasharepointservice20161117100057.azurewebsites.net/api/document?uri=https://ncpapwr.sharepoint.com/sites/publicdocs/BondDocuments/LEC_Issue2_2010_SeriesA.B_(CDWR)_OS.pdf)
- 2012-11-01 — Commercial operation
  The CEC records commercial operation beginning November 1, 2012. Other NCPA records report November 21 or November 27, 2012.
  Source: Lodi Energy Center | California Energy Commission (https://www.energy.ca.gov/powerplant/combined-cycle/lodi-energy-center)
- 2013-08-28 — Startup and emissions amendment
  The CEC approved modifications addressing startup emissions, gas-turbine combustor tuning, SCR operating temperatures, and volumetric-flow-meter requirements.
  Source: Lodi Energy Center | California Energy Commission (https://www.energy.ca.gov/powerplant/combined-cycle/lodi-energy-center)
- 2014-08-20 — Wastewater permitting amendment
  The CEC approved a post-certification amendment addressing wastewater disposal and underground-injection-well permitting.
  Source: Lodi Energy Center | California Energy Commission (https://www.energy.ca.gov/powerplant/combined-cycle/lodi-energy-center)
- 2020-06-04 — Permanent storage-area amendment
  The CEC approved adding 2.323 acres adjacent to the site to the Lodi Energy Center project description for storage use.
  Source: Lodi Energy Center | California Energy Commission (https://www.energy.ca.gov/powerplant/combined-cycle/lodi-energy-center)
- 2025-03-18 — Siemens FX turbine upgrade approved
  The CEC approved Siemens FX hot-gas-path components, including new blades, seals, vanes, and vane carriers for turbine stages 1 through 4; the amendment stated that the upgrade could provide an additional 15 MW under ambient conditions.
  Source: Lodi Energy Center | California Energy Commission (https://www.energy.ca.gov/powerplant/combined-cycle/lodi-energy-center)

## Sources

- [Lodi Energy Center | NCPA](https://www.ncpa.com/about/generation/lodi-energy-center/) — ncpa.com · tier other
- [Source](https://www.caiso.com/documents/evaluationreportofloadservingentitiescompliancewith2022resourceadequacyrequirements.pdf) — caiso.com · tier other
- [Agenda](https://www.ncpa.com/wp-content/uploads/2015/12/12022015_LEC_PPC_Compiled_Meeting_Materials.pdf) — ncpa.com · tier other
- [Lodi Energy Center | California Energy Commission](https://www.energy.ca.gov/powerplant/combined-cycle/lodi-energy-center) — energy.ca.gov · tier regulatory
- [Source](https://www.enr.com/articles/10466-innovative-lodi-energy-center-power-plant-project-charging-ahead) — enr.com · tier other
- [TOP PLANTS: Lodi Energy Center, Lodi, California](https://www.powermag.com/topplantslodi-energy-center-lodi-california/) — powermag.com · tier other
- [The Lodi Energy Center Power Generation Facility](https://www.cei.com/our-work/lodi-energy-center) — cei.com · tier other
- [Local officials dedicate cutting-edge Lodi Energy Center](https://www.lodinews.com/news/article_d21ad524-a4dc-5d95-b5a7-9ba9c47048f8.html) — lodinews.com · tier other
- [Source](https://energy.ca.gov/powerplant/combined-cycle/lodi-energy-center) — energy.ca.gov · tier regulatory
- [SGT6-5000F Heavy-duty gas turbine (60 Hz)](https://www.siemens-energy.com/global/en/home/products-services/product/sgt6-5000f.html) — siemens-energy.com · tier other
- [Source](https://www.ncpa.com/wp-content/uploads/2015/05/NCPA.2013-Annual-Report.We-Version.pdf) — ncpa.com · tier other
- [Lodi Energy Center will generate enough power for almost ...](https://www.lodinews.com/news/article_0e3c9b25-0c82-5b71-96ca-f1e7f8c7c9e4.html) — lodinews.com · tier other
- [Fitch Rates Northern California Power Agency's (NCPA) Lodi Energy Center Issue One 2010 Bonds 'A-'](https://www.fitchratings.com/research/us-public-finance/fitch-rates-northern-california-power-agency-ncpa-lodi-energy-center-issue-one-2010-bonds-a-26-05-2010) — fitchratings.com · tier other
- [Source](https://ncpasharepointservice20161117100057.azurewebsites.net/api/document?uri=https://ncpapwr.sharepoint.com/sites/publicdocs/BondDocuments/LEC_Issue2_2010_SeriesA.B_(CDWR)_OS.pdf) — ncpasharepointservice20161117100057.azurewebsites.net · tier other
- [Microsoft Word - 47B1B593-578E-088DEA.doc](https://www.azusaca.gov/DocumentView.asp?DID=579) — azusaca.gov · tier regulatory
- [California Energy Commission : Docket Log](https://efiling.energy.ca.gov/Lists/DocketLog.aspx?docketnumber=08-AFC-10C) — efiling.energy.ca.gov · tier regulatory
- [Lodi Energy - Portland Bolt](https://www.portlandbolt.com/about/projects/power-and-energy/lodi-power-plant/) — portlandbolt.com · tier other
- [Fitch Affirms Northern California Power Agency's Lodi Energy ...](https://www.fitchratings.com/research/us-public-finance/fitch-affirms-northern-california-power-agency-lodi-energy-center-proj-revs-at-a-outlook-stable-10-05-2018) — fitchratings.com · tier other
- [2026 NQC List](https://www.caiso.com/documents/net-qualifying-capacity-report-for-compliance-year-2026.xlsx) — caiso.com · tier other
- [ANNUAL Report](https://www.ncpa.com/wp-content/uploads/2026/01/NCPA_Annual_Report_FINAL_2025.pdf) — ncpa.com · tier other

## Data quality

- Capacity differs by source: the CEC describes a nominal 296 MW project, while the operational EIA-derived record lists 288.9 MW across two generators. Commercial-operation dates differ among records: the CEC lists November 1, 2012; NCPA interconnection materials list November 21, 2012; and NCPA’s fiscal-2013 annual report states November 27, 2012. The CEC date is used as the regulatory project date. A 24 MW LECU expansion associated with CAISO queue position Q945 was documented in 2015, but the operational record continues to show two generators totaling 288.9 MW; it is not treated as a completed expansion. No separate project acquisition, sale, predecessor owner, buyer, seller, or transaction month/year is identified in the project records. The approximately $140 million Siemens power-island purchase was equipment procurement for an NCPA-developed project, not disclosed plant-sale consideration.

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Canonical page: https://askthegrid.com/assets/facilities/lodi-energy-center

Source: Ask the Grid — https://askthegrid.com/