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Investor-owned utilityMon Power interconnection application
Mon Power is an investor-owned utility serving 334,336 residential customers in West Virginia (EIA-861, 2025). Applications: Own online portal (FirstEnergy Interconnection Portal). Gridpol files Mon Power 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 Mon Power’s official sources (see below). Current WV net metering credit rate not verified.
Mon Power at a glance
Monongahela Power Co (FirstEnergy)
TypeInvestor-owned utility
EIA utility ID12796
Residential customers334,336 (EIA-861, 2025)
Net-metered residential customers1,090 (EIA-861, 2025)
Service territory34 counties in West Virginia
How to applyOwn online portal – FirstEnergy Interconnection Portal · official link
Who submitsCustomer or installer via online portal.
Export compensationNEM – Net Energy Metering Rider (WV)
WV PSC 150CSR33; credit changes for applications after Jan 1, 2025 reported - verify current tariff.
Per WV PSC rules 150CSR33.
Documents Mon Power asks for
- Interconnection application formFilled in by us from your project data in the utility’s portal or on its form. Gridpol prepares this.
- Site plan / site layoutSame content rules as FE (north arrow, cross streets, disconnect, storage, transformer); no overhead internet photos Gridpol prepares this.
- Single-line diagram (one-line)Drawn by us from your equipment data: modules, strings, inverter, battery, disconnects, point of interconnection, meter. Gridpol prepares this.
- Net metering / net billing agreementNet Metering Application
- Interconnection agreementLevel 1 (Appendix E) or Level 2 (Appendix F)
- Final inspection sign-offCertificate of Completion (Appendix D) / Certificate of Electrical Approval
How the Mon Power process runs
- Determine size/type.
- Submit application, site plan, one-line, fee in portal.
- Engineering review and notification.
- Install; local electrical inspection.
- Submit Interconnection Agreement + Certificate of Completion.
- Approval to Operate; do not energize before.
- Bi-directional meter installed (may take several weeks).
Fees
| Fee | Applies to | Note |
|---|---|---|
| $30 | Level 1 (<=25 kW) | |
| $50 + $1/kW | Level 2 (>25 kW) |
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 | inverter-based |
| Level 2 | >25 kW | |
| Net metering cap | 25 kW |
Net metering limits: residential 25 kW, commercial 500 kW, industrial 2,000 kW.
Storage, EV and stamps
Battery storage
Storage location and battery equipment must be on site plan/one-line. New IEEE 1547-2018 inverter settings required from Jan 1, 2024.
Common issues the utility lists
- Overhead internet photos instead of site plan
- Information incorrect or missing
Gridpol’s pre-submission check covers these before we file.
Sources
- FirstEnergy West Virginia Interconnection: https://www.firstenergycorp.com/feconnect/westvirginia.html (retrieved 2026-11-13)
Other utilities in West Virginia
$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.