# Sun Streams 2

CAISO Solar Photovoltaic · https://askthegrid.com/assets/facilities/sun-streams-2

Sun Streams 2 is a solar power facility with 150 MW of EIA-reported operating capacity in Maricopa County, Arizona, registered as EIA Plant ID 63440. Longroad Energy is the public owner or developer; Sun Streams 2, LLC is the registered plant entity or operator. The plant's generating configuration is one solar photovoltaic generating unit and 200 MWdc / 150 MWac. The facility interconnects at Hassayampa Switchyard at 500 kV.

## Key facts

- Technology: Solar Photovoltaic
- Power capacity: 150 MW
- Commercial operation: 2021
- Operating status: operating

## Grid and market context

- ISO/RTO: CAISO
- Balancing authority: CISO
- Substation: Hassayampa Switchyard
- Point of interconnection: Hassayampa Switchyard
- Transmission owner: San Diego Gas & Electric Company (SDG&E)
- Interconnection voltage: 500 kV

## Source-backed facts

- Owner logo domain: longroadenergy.com — Longroad Energy · confidence: medium
- Identifiers: [{"value":"63440","system":"EIA plant ID"},{"value":"Q1189","system":"CAISO queue position"},{"value":"6224","system":"CAISO LGIA service agreement"},{"value":"Sun Streams Solar 2","system":"CAISO interconnection project name"}] — Cross-Reference Table · confidence: high
- Identifiers: [{"value":"63440","system":"EIA plant ID"},{"value":"Q1189","system":"CAISO queue position"},{"value":"6224","system":"CAISO LGIA service agreement"},{"value":"Sun Streams Solar 2","system":"CAISO interconnection project name"}] — Resource category and phase · confidence: high
- Owner name: Longroad Energy — Longroad Energy Completes Term Financing of 200 MWdc Sun Streams 2 Solar Project - Longroad Energy · confidence: high
- Description: Sun Streams 2 is a 150 MW solar photovoltaic power plant in Maricopa County, Arizona, with one generating unit. Longroad describes the project as 200 MWdc (150 MWac), with commercial operations beginning in 2021. The project has a 20-year revenue agreement with Microsoft Corporation covering the energy, renewable energy certificates, and capacity of the full project. — Sun Streams 2 - Longroad Energy · confidence: medium
- Description: Sun Streams 2 is a 150 MW solar photovoltaic power plant in Maricopa County, Arizona, with one generating unit. Longroad describes the project as 200 MWdc (150 MWac), with commercial operations beginning in 2021. The project has a 20-year revenue agreement with Microsoft Corporation covering the energy, renewable energy certificates, and capacity of the full project. — Longroad Energy Completes Term Financing of 200 MWdc Sun Streams 2 Solar Project - Longroad Energy · confidence: medium
- Identifiers.0: {"value":"63440","system":"EIA plant ID"} — Cross-Reference Table · confidence: high
- Identifiers.1: {"value":"Q1189","system":"CAISO queue position"} — Source · confidence: high
- Identifiers.3: {"value":"Sun Streams Solar 2","system":"CAISO interconnection project name"} — Source · confidence: high
- Parties.0: {"relationship":"Owner","name":"Longroad Energy","official_url":"https://www.longroadenergy.com/"} — Longroad Energy Completes Term Financing of 200 MWdc Sun Streams 2 Solar Project - Longroad Energy · confidence: high
- Parties.1: {"relationship":"Project company and CAISO interconnection customer","name":"Sun Streams 2, LLC","official_url":null} — Source · confidence: high
- Parties.2: {"relationship":"Asset manager and operator","name":"Longroad Energy Services","official_url":"https://www.longroadenergy.com/"} — Longroad Energy Completes Term Financing of 200 MWdc Sun Streams 2 Solar Project - Longroad Energy · confidence: high
- Parties.3: {"relationship":"Original developer and Series 6 module supplier","name":"First Solar","official_url":"https://www.firstsolar.com/"} — Longroad Energy Completes Term Financing of 200 MWdc Sun Streams 2 Solar Project - Longroad Energy · confidence: high
- Parties.4: {"relationship":"Engineering, procurement, and construction contractor","name":"McCarthy Building Companies","official_url":"https://www.mccarthy.com/"} — Longroad Energy Completes Term Financing of 200 MWdc Sun Streams 2 Solar Project - Longroad Energy · confidence: high
- Parties.5: {"relationship":"Tracker supplier","name":"Nextracker","official_url":"https://nextpower.com/"} — Longroad Energy Completes Term Financing of 200 MWdc Sun Streams 2 Solar Project - Longroad Energy · confidence: medium
- Parties.6: {"relationship":"Inverter supplier","name":"SMA","official_url":"https://www.sma-america.com/"} — Longroad Energy Completes Term Financing of 200 MWdc Sun Streams 2 Solar Project - Longroad Energy · confidence: high
- Parties.7: {"relationship":"Revenue-agreement counterparty and offtaker","name":"Microsoft Corporation","official_url":"https://www.microsoft.com/"} — Sun Streams 2 - Longroad Energy · confidence: high
- Parties.8: {"relationship":"Coordinating lead arranger, collateral agent, and issuing bank","name":"CIBC","official_url":"https://us.cibc.com/en/home.html"} — Longroad Energy Completes Term Financing of 200 MWdc Sun Streams 2 Solar Project - Longroad Energy · confidence: high
- Parties.9: {"relationship":"Coordinating lead arranger and administrative agent","name":"Silicon Valley Bank","official_url":null} — Longroad Energy Completes Term Financing of 200 MWdc Sun Streams 2 Solar Project - Longroad Energy · confidence: medium
- Parties.10: {"relationship":"Lender","name":"Helaba","official_url":"https://www.helaba.com/"} — Longroad Energy Completes Term Financing of 200 MWdc Sun Streams 2 Solar Project - Longroad Energy · confidence: high
- Parties.11: {"relationship":"Tax equity investor","name":"PNC Bank","official_url":"https://www.pnc.com/"} — Longroad Energy Completes Term Financing of 200 MWdc Sun Streams 2 Solar Project - Longroad Energy · confidence: high
- Parties.15: {"relationship":"Transmission-arrangement counterparty","name":"Salt River Project","official_url":"https://www.srpnet.com/"} — Source · confidence: medium
- Commercial operation date: 2021 — Source · confidence: high
- Construction scope: McCarthy completed the approximately 200 MWdc Sun Streams 2 solar facility in June 2021 across more than 1,000 acres. The build included more than 450,000 First Solar Series 6 modules, 5,805 NEXTracker trackers, 5 SMA MWPS-4000 inverter skids, DC wiring and combiner boxes, and underground 34.5 kV AC collection wiring. — Longroad Sun Streams II | McCarthy · confidence: medium
- Product url: https://www.firstsolar.com/en/Products/Series-6 — Series 6 Family | First Solar · confidence: high
- Pcs or inverters: 5 — Longroad Sun Streams II | McCarthy · confidence: high
- Kind: solar — Sun Streams 2 - Longroad Energy · confidence: high
- Equipment models: [{"manufacturer_domain":"firstsolar.com","product_url":"https://www.firstsolar.com/en/Products/Series-6","count":null,"unit_mw":null,"name":"First Solar Series 6 PV modules"},{"manufacturer_domain":"nextpower.com","product_url":"https://nextpower.com/products/trackers","count":5805,"unit_mw":null,"name":"NEXTracker trackers (specific model not disclosed)"},{"manufacturer_domain":"sma-america.com","product_url":"https://www.sma-america.com/products/system-solutions-packages/medium-voltage-power-station-4000-s2-us-4200-s2-us-4400-s2-us-4600-s2-us","count":5,"unit_mw":null,"name":"SMA MWPS-4000 inverter skids"}] — Longroad Sun Streams II | McCarthy · confidence: medium
- Equipment models.0: {"manufacturer_domain":"firstsolar.com","product_url":"https://www.firstsolar.com/en/Products/Series-6","count":null,"unit_mw":null,"name":"First Solar Series 6 PV modules"} — Longroad Sun Streams II | McCarthy · confidence: medium
- Equipment models.1: {"manufacturer_domain":"nextpower.com","product_url":"https://nextpower.com/products/trackers","count":5805,"unit_mw":null,"name":"NEXTracker trackers (specific model not disclosed)"} — Longroad Sun Streams II | McCarthy · confidence: medium
- Equipment models.2: {"manufacturer_domain":"sma-america.com","product_url":"https://www.sma-america.com/products/system-solutions-packages/medium-voltage-power-station-4000-s2-us-4200-s2-us-4400-s2-us-4600-s2-us","count":5,"unit_mw":null,"name":"SMA MWPS-4000 inverter skids"} — Longroad Sun Streams II | McCarthy · confidence: medium
- Significance: Sun Streams 2 is a 200 MWdc (150 MWac) solar photovoltaic facility whose CAISO interconnection is documented under queue position Q1189 and service agreement 6224. Its full output—energy, renewable energy certificates, and capacity—is covered by a 20-year revenue agreement with Microsoft for the West US 3 sustainable datacenter region. — Source · confidence: high
- Description: Sun Streams 2 is a 200 MWdc (150 MWac) photovoltaic facility with one generating unit in Maricopa County, Arizona. Longroad Energy owns 100% of the project after acquiring it from First Solar in February 2021. Longroad Energy Services is the asset manager and operator; McCarthy built the project using First Solar Series 6 modules, Nextracker trackers, and SMA inverters. Commercial operations began in 2021, and the project has a 20-year revenue agreement with Microsoft covering its energy, renewable energy certificates, and capacity. — Source · confidence: high
- Quality notes: ["Longroad reports capacity as 200 MWdc and 150 MWac, while the EIA-derived plant record reports 150 MW and one generating unit.","Longroad acquired the project from First Solar in February 2021 as part of a four-project Maricopa County portfolio; acquisition consideration is not disclosed.","The July 2021 financing announcement discloses the financing structure and named parties but no principal amount; it should not be treated as acquisition consideration.","No expansion, retirement, or repowering milestone is identified for the project."] — Source · confidence: medium
- Quality notes: ["Longroad reports capacity as 200 MWdc and 150 MWac, while the EIA-derived plant record reports 150 MW and one generating unit.","Longroad acquired the project from First Solar in February 2021 as part of a four-project Maricopa County portfolio; acquisition consideration is not disclosed.","The July 2021 financing announcement discloses the financing structure and named parties but no principal amount; it should not be treated as acquisition consideration.","No expansion, retirement, or repowering milestone is identified for the project."] — Source · confidence: medium
- Financing summary: On 2021-07-20, Longroad announced completion and funding of term financing for Sun Streams 2. Tax equity and lenders funded the permanent capital structure; CIBC was coordinating lead arranger, collateral agent, and issuing bank; Silicon Valley Bank was coordinating lead arranger and administrative agent; Helaba participated; and PNC Bank was the sole tax equity investor. The financing amount was not disclosed. This financing was separate from Longroad’s February 2021 acquisition of the project from First Solar. — Source · confidence: medium
- Timeline: [{"event":"CAISO interconnection filing","date":"2020-08-07","detail":"An executed Large Generator Interconnection Agreement for Sun Streams Solar 2 was filed with FERC; the agreement identifies CAISO service agreement 6224 and queue position Q1189."},{"event":"LGIA effective date","date":"2020-10-07","detail":"The Sun Streams 2 Large Generator Interconnection Agreement was specified to become effective."},{"event":"Acquisition","date":"2021-02","detail":"Longroad Energy acquired Sun Streams 2 from First Solar as one of four Maricopa County projects in the Sun Streams portfolio. Longroad states that it owns 100% of the project."},{"event":"Construction","date":null,"detail":"The project was built by McCarthy. First Solar was the original developer and supplied the Series 6 modules; Nextracker supplied trackers and SMA supplied inverters."},{"event":"Commercial operation","date":"2021","detail":"Commercial operations began, according to Longroad’s project portfolio information."},{"event":"Permanent project financing","date":"2021-07-20","detail":"Longroad announced completion and funding of term financing, with tax equity and lenders funding the permanent capital structure."}] — Source · confidence: medium
- Timeline: [{"event":"CAISO interconnection filing","date":"2020-08-07","detail":"An executed Large Generator Interconnection Agreement for Sun Streams Solar 2 was filed with FERC; the agreement identifies CAISO service agreement 6224 and queue position Q1189."},{"event":"LGIA effective date","date":"2020-10-07","detail":"The Sun Streams 2 Large Generator Interconnection Agreement was specified to become effective."},{"event":"Acquisition","date":"2021-02","detail":"Longroad Energy acquired Sun Streams 2 from First Solar as one of four Maricopa County projects in the Sun Streams portfolio. Longroad states that it owns 100% of the project."},{"event":"Construction","date":null,"detail":"The project was built by McCarthy. First Solar was the original developer and supplied the Series 6 modules; Nextracker supplied trackers and SMA supplied inverters."},{"event":"Commercial operation","date":"2021","detail":"Commercial operations began, according to Longroad’s project portfolio information."},{"event":"Permanent project financing","date":"2021-07-20","detail":"Longroad announced completion and funding of term financing, with tax equity and lenders funding the permanent capital structure."}] — Source · confidence: medium
- Commercial parties.0: {"relationship":"Owner","name":"Longroad Energy","detail":"Owns 100% of Sun Streams 2 after acquiring the project from First Solar in February 2021.","official_url":"https://www.longroadenergy.com/"} — Source · confidence: high
- Commercial parties.2: {"relationship":"Asset manager and operator","name":"Longroad Energy Services","detail":"Provides long-term asset management, operations, and remote monitoring for the project.","official_url":"https://www.longroadenergy.com/"} — Source · confidence: high
- Commercial parties.3: {"relationship":"Original developer and module supplier","name":"First Solar","detail":"Originally developed the project, supplied its Series 6 modules, and sold the project to Longroad in February 2021.","official_url":"https://www.firstsolar.com/"} — Source · confidence: high
- Commercial parties.4: {"relationship":"Engineering, procurement, and construction contractor","name":"McCarthy Building Companies","detail":"Built the Sun Streams 2 project.","official_url":"https://www.mccarthy.com/"} — Source · confidence: high
- Commercial parties.5: {"relationship":"Tracker supplier","name":"Nextracker","detail":"Supplied the project’s trackers.","official_url":"https://nextpower.com/"} — Source · confidence: medium
- Commercial parties.6: {"relationship":"Inverter supplier","name":"SMA","detail":"Supplied the project’s inverters.","official_url":"https://www.sma-america.com/"} — Source · confidence: high
- Commercial parties.7: {"relationship":"Revenue-agreement counterparty and offtaker","name":"Microsoft Corporation","detail":"Holds a 20-year revenue agreement covering the project’s energy, renewable energy certificates, and capacity.","official_url":"https://www.microsoft.com/"} — Source · confidence: high
- Commercial parties.8: {"relationship":"Coordinating lead arranger, collateral agent, and issuing bank","name":"CIBC","detail":"Served in these roles for the July 2021 term financing.","official_url":"https://us.cibc.com/en/home.html"} — Source · confidence: high
- Commercial parties.9: {"relationship":"Coordinating lead arranger and administrative agent","name":"Silicon Valley Bank","detail":"Served in these roles for the July 2021 term financing.","official_url":null} — Source · confidence: medium
- Commercial parties.10: {"relationship":"Lender","name":"Helaba","detail":"Participated in the July 2021 term financing.","official_url":"https://www.helaba.com/"} — Source · confidence: high
- Commercial parties.11: {"relationship":"Tax equity investor","name":"PNC Bank","detail":"Was the sole tax equity investor for the permanent capital structure announced in July 2021.","official_url":"https://www.pnc.com/"} — Source · confidence: high
- Commercial parties.15: {"relationship":"Transmission-arrangement counterparty","name":"Salt River Project","detail":"Participated in the transmission arrangements documented for the Sun Streams 2 interconnection.","official_url":"https://www.srpnet.com/"} — Source · confidence: medium
- Quality notes.1: Longroad acquired the project from First Solar in February 2021 as part of a four-project Maricopa County portfolio; acquisition consideration is not disclosed. — Source · confidence: medium
- Quality notes.2: The July 2021 financing announcement discloses the financing structure and named parties but no principal amount; it should not be treated as acquisition consideration. — Source · confidence: medium
- Quality notes.3: No expansion, retirement, or repowering milestone is identified for the project. — Source · confidence: medium
- Timeline.2: {"event":"Acquisition","date":"2021-02","detail":"Longroad Energy acquired Sun Streams 2 from First Solar as one of four Maricopa County projects in the Sun Streams portfolio. Longroad states that it owns 100% of the project."} — Source · confidence: high
- Timeline.3: {"event":"Construction","date":null,"detail":"The project was built by McCarthy. First Solar was the original developer and supplied the Series 6 modules; Nextracker supplied trackers and SMA supplied inverters."} — Source · confidence: medium

## Timeline

- 2021-02 — Acquisition
  Longroad Energy acquired Sun Streams 2 from First Solar as one of four Maricopa County projects in the Sun Streams portfolio. Longroad states that it owns 100% of the project.
  Source: Source (https://longroadenergy.com/longroad-energy-completes-term-financing-of-200-mwdc-sun-streams-2-solar-project)
- 2021-02 — Acquisition closed
  Longroad Energy Holdings closed the acquisition of Sun Streams 2 from First Solar, Inc. in February 2021. No purchase consideration was disclosed.
  Source: Longroad Energy Acquires ~900 MWdc Arizona Solar and Storage Portfolio from First Solar - Longroad Energy (https://www.longroadenergy.com/longroad-energy-acquires-900-mwdc-arizona-solar-and-storage-portfolio-from-first-solar/)
- 2021-07-20 — Permanent project financing
  Longroad announced completion and funding of term financing, with tax equity and lenders funding the permanent capital structure.
  Source: Source (https://longroadenergy.com/longroad-energy-completes-term-financing-of-200-mwdc-sun-streams-2-solar-project)

## Sources

- [Longroad Energy](https://www.longroadenergy.com/) — longroadenergy.com · tier other
- [Cross-Reference Table](https://www.energy.ca.gov/sites/default/files/2025-04/Energy_Commission_Power_Plant_ID_Cross_Reference_Table_2024.xlsx) — energy.ca.gov · tier regulatory
- [Source](https://www.caiso.com/documents/aug7-2020_largegeneratorinterconnectionagreement-sandiegogasandelectric-sunstreamsolar2-caiso-er20-2636.pdf) — caiso.com · tier other
- [Resource category and phase](https://www.caiso.com/documents/resourcecategoryandphaseallparticipatingresourceids.xlsx) — caiso.com · tier other
- [Sun Streams 2 - Longroad Energy](https://www.longroadenergy.com/portfolio/sun-streams-2/) — longroadenergy.com · tier other
- [Longroad Energy Completes Term Financing of 200 MWdc Sun Streams 2 Solar Project - Longroad Energy](https://www.longroadenergy.com/longroad-energy-completes-term-financing-of-200-mwdc-sun-streams-2-solar-project/) — longroadenergy.com · tier other
- [Source](https://caiso.com/documents/aug7-2020_largegeneratorinterconnectionagreement-sandiegogasandelectric-sunstreamsolar2-caiso-er20-2636.pdf) — caiso.com · tier other
- [Source](https://longroadenergy.com/portfolio/sun-streams-2) — longroadenergy.com · tier other
- [Source](https://longroadenergy.com/longroad-energy-completes-term-financing-of-200-mwdc-sun-streams-2-solar-project) — longroadenergy.com · tier other
- [Longroad Sun Streams II | McCarthy](https://www.mccarthy.com/projects/longroad-sun-streams-ii) — mccarthy.com · tier other
- [Sun Streams Solar & Storage Complex | McCarthy](https://www.mccarthy.com/projects/sun-streams-solar-storage-complex) — mccarthy.com · tier other
- [Series 6 Family | First Solar](https://www.firstsolar.com/en/Products/Series-6) — firstsolar.com · tier other
- [Discover the MV Power Station 4000-4600-S2-US | SMA America](https://www.sma-america.com/products/system-solutions-packages/medium-voltage-power-station-4000-s2-us-4200-s2-us-4400-s2-us-4600-s2-us) — sma-america.com · tier other

## Data quality

- Longroad reports capacity as 200 MWdc and 150 MWac, while the EIA-derived plant record reports 150 MW and one generating unit. Longroad acquired the project from First Solar in February 2021 as part of a four-project Maricopa County portfolio; acquisition consideration is not disclosed. The July 2021 financing announcement discloses the financing structure and named parties but no principal amount; it should not be treated as acquisition consideration. No expansion, retirement, or repowering milestone is identified for the project.

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Canonical page: https://askthegrid.com/assets/facilities/sun-streams-2

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