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Electric cooperativeCORE Electric Cooperative interconnection application
CORE Electric Cooperative is an electric cooperative serving 168,587 residential customers in Colorado (EIA-861, 2025). Applications: PowerClerk (CORE SGI PowerClerk). Gridpol files CORE Electric Cooperative interconnection applications for licensed installers – solar, storage and EV chargers – with single-line diagram and site plan, unlimited for $500 a month.
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Process verified from CORE Electric Cooperative’s official sources (see below). PTO/meter step sequence after Certificate of Completion not detailed online; verify on first project.
CORE Electric Cooperative at a glance
CORE Electric Cooperative
TypeElectric cooperative
EIA utility ID9336
Residential customers168,587 (EIA-861, 2025)
Net-metered residential customers10,448 (EIA-861, 2025)
Service territory11 counties in Colorado
How to applyPowerClerk – CORE SGI PowerClerk · official link
Who submitsInterconnection Customer (member) signs the application; equipment installation/electrical contractor listed on the form and may file via PowerClerk (PowerClerk Applicant User Guide).
Export compensationNEM – Net metering
kWh-for-kWh offset, monthly carryforward; annual true-up after April billing cycle at avoided cost ($0.04616/kWh from May 2026). CORE takes RECs unless notified of transfer.
Per SGIP 750-01: receipt notice within 3 business days; completeness determination within 10 business days; customer has 10 business days to cure; Level 2 initial review 15 business days after complete; pre-application report 20 business days.
Documents CORE Electric Cooperative asks for
- Interconnection application formLevel 1 Generator Interconnect and/or Energy Storage Application (Short Form, Attachment 4) Gridpol prepares this.
- Single-line diagram (one-line)One-line diagram Gridpol prepares this.
- Site plan / site layoutShow all equipment locations and fencing Gridpol prepares this.
- PV module spec sheetManufacturer data sheet of the modules.
- Inverter spec sheetCertified inverter; supporting documents required for export limiting
- Battery spec sheet (when applicable)If storage included
- Customer signatureInterconnection customer certification signature
- Other utility-specific documentSite control documentation; signed electrical permit copy; Certificate of Completion returned after installation; SGI signage requirements
How the CORE Electric Cooperative process runs
- Submit Level 1 application with documents and $195 fee via PowerClerk
- CORE acknowledges receipt and determines completeness
- Contingent approval signed by CORE
- Install system; electrical permit/inspection
- Return Certificate of Completion
- CORE meter work and authorization to operate
Fees
| Fee | Applies to | Note |
|---|---|---|
| $195 | Level 1 (<=25 kW certified inverter), non-refundable | |
| $1,000 | Level 1A (multi-site developer pre-approval) | |
| $500 | Level 2 Fast Track |
Utility fees are paid by the installer or customer; they are not part of the Gridpol plan.
Size levels and limits
| Level | Up to | Note |
|---|---|---|
| Level 1 | 25 kW | Certified inverter-based, residential or commercial |
| Level 2 Fast Track | 5000 kW | 2-5 MW depending on line voltage/location |
| Level 3 | 20000 kW | >5 MW and <20 MW |
| Net metering cap | 10 kW |
Net metering only up to lesser of 200% of 12-month historical usage, 10 kW residential or 25 kW commercial; larger systems as Qualifying Facility.
Storage, EV and stamps
Battery storage
Storage on same Level 1 form (inverter make/model, kW, kWh). 'Batteries are subject to no-export restrictions.' Back-up generators/storage for backup only follow the Standby Power Connection Procedure. No meter collar adapter program yet (awaiting state rules under HB26-1007).
Common issues the utility lists
- Incomplete interconnection request (written list of missing items; 10 business days to cure)
- Changes in equipment, design, site or installer after approval forfeit fee and require resubmittal
Gridpol’s pre-submission check covers these before we file.
Sources
- CORE Generation Interconnections: https://core.coop/my-cooperative/renewables/generation-interconnections/ (retrieved 2026-11-13)
- CORE Level 1 Application and/or Energy Storage Application: https://core.coop/wp-content/uploads/2022/09/CORELevel1ApplicationEnergyStorageApplication09292022.pdf (retrieved 2026-11-13)
- CORE Small Generation Interconnection Procedures 750-01 Rev 10: https://core.coop/wp-content/uploads/2022/09/CORESmallGenerationInterconnectionProcedures09292022.pdf (retrieved 2026-11-13)
Other utilities in Colorado
- Xcel Energy (Colorado)1,379,910
- Colorado Springs Utilities220,059
- United Power, Inc.103,104
- Black Hills Energy (Colorado)97,888
- City of Fort Collins71,804
- Mountain View Electric Association, Inc.61,343
- Poudre Valley REA, Inc.50,933
- Holy Cross Electric Association, Inc.50,431
- City of Longmont41,483
- La Plata Electric Association, Inc.40,369
$500 / month
Unlimited interconnection applications. 12-month agreement, signed online. The agreement starts the day you sign; first invoice right away, then monthly.
- Unlimited interconnection applications
- Single-line diagram and site plan for every application
- Pre-submission check against the utility’s requirements
- Homeowner e-signature link for the authorization
- Filing in your utility portal accounts or by the utility’s method
- Utility questions, corrections and resubmissions
- Follow-up through approval, inspection and PTO
- Customer list, exports, API and webhooks
Applications are typically submitted within 2 business days after complete documents. Utility review times are set by each utility.