OER Monarch CSG
6901 Old Crain Hwy, Upper Marlboro, MD 20722Plant Summary Information
OER Monarch CSG is ranked #69 out of 190 solar farms in Maryland in terms of total annual net electricity generation.
OER Monarch CSG generated 764.0 MWh during the 3-month period between September 2025 to December 2025.
| Plant Name | OER Monarch CSG |
|---|---|
| Utility Name | Standard Solar |
| Location | Prince George's County, MD |
| Initial Operation Date | December 2021 |
| Last Update | Dec 2025 |
| Annual Generation | 3.4 GWh |
| Annual Consumption | 12.2 k MMBtu |
| Ranked #9,580 out of 13,301 Power Plants Nationwide | |
| Ranked #4,627 out of 7,209 Solar Power Plants Nationwide | |
| Ranked #105 out of 232 Maryland Power Plants | |
| Ranked #69 out of 190 Maryland Solar Power Plants | |
| Fuel Types | Solar |
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Monthly Net Generation for OER Monarch CSG
Monthly Plant Fuel Consumption for OER Monarch CSG
OER Monarch CSG Details
| Summary Information | |
|---|---|
| Plant Name | OER Monarch CSG (65357) |
| Plant Address | 6901 Old Crain Hwy, Upper Marlboro, MD 20722 |
| Utility | Standard Solar (60531) |
| Latitude, Longitude | 38.79959, -76.78948 |
| Generation Dates on File | Dec 2021 to Dec 2025 |
| Initial Operation Date | December 2021 |
| Annual Generation | 3.4 GWh |
| Fuel Types | Solar |
| Federal Energy Regulatory Commission (FERC) Information | |
| FERC Cogeneration Status | No |
| FERC Small Power Producer Status | No |
| FERC Exempt Wholesale Generator Status | No |
| Regulatory Information | |
|---|---|
| Regulatory Status | Non-Regulated |
| NERC Region | RFC |
| Balancing Authority | PJM Interconnection, LLC (PJM) |
| NAICS Code | Utilities (22) |
| Sector | IPP Non-CHP (2) |
| Water Source | |
| Ash Impoundment | |
| Transmission / Distribution Owner | Potomac Electric Power Co (15270) DC |
| Grid Voltage | 13.80 kV |
| Energy Storage | No |
Generator OERMN Details Operating December 2021
| Technology | Solar Photovoltaic |
|---|---|
| Prime Mover | Photovoltaic |
| Ownership | Single Owner |
| Nameplate Capacity | 2 MW |
| Summer Capacity | 2 MW |
| Winter Capacity | 2 MW |
| Uprate/Derate Completed | No |
|---|---|
| Status | Operating |
| First Operation Date | December 2021 |
| Combined Heat & Power | No |
| Sector Name | IPP Non-CHP (2) |
| Energy Source | Solar |
| Solar Details | |
| Fixed Tilt | Yes |
|---|---|
| Tilt Angle | 25 |
| DC Net Capacity | 2.8 MW |
| Crystalline Silicon | Yes |
| Net Metering Agreement | No |
| Virtual Net Metering Agreement | Yes |
| Virtual Net Metering DC Capacity | 2.8 MW |
OER Monarch CSG Plant Owners
| Owner Name | Address | Ownership | We couldn't locate any owners for this plant |
|---|
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| #4632 | Mount Hope West | Mount Hope, NY | 3.4 GWh |
| #4633 | Ward Solar 1, LLC | Carver, MA | 3.4 GWh |
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| #4635 | Centaurus Community Solar | Maynard, MN | 3.4 GWh |
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Nearby Power Plants
Below are closest 20 power plants surrounding OER Monarch CSG.
| Plant Name | Plant Location | Annual Generation | Distance |
|---|---|---|---|
| Beech Road (CSG) | Temple Hill, MD | 7.9 GWh | 8 mi |
| Bluefin Origination 1 | Brandywine, MD | 2.2 GWh | 5.1 mi |
| Brandywine Power Facility | Brandywine, MD | 676.1 GWh | 10 mi |
| Brown Station Road Plant II | Upper Marlboro, MD | 590.0 MWh | 3.3 mi |
| Bulldog Solar One, LLC | Bowie, MD | 3.7 GWh | 9.4 mi |
| City of Bowie | Mitchellville, MD | 3.6 GWh | 9.1 mi |
| Claggett Landing | Upper Malboro, MD | 2.9 GWh | 7.1 mi |
| First Baptist Church of Glenarden | Upper Marlboro, MD | 2.7 GWh | 4.6 mi |
| Hall Property | Upper Marlboro, MD | 3.1 GWh | 6.7 mi |
| Holly Spring Meadows | District Heights, MD | 2.0 GWh | 7.9 mi |
| Key | Brandywine, MD | 4.5 TWh | 7.5 mi |
| Kirby Road Solar, LLC | Clinton, MD | 2.4 GWh | 7.4 mi |
| MD - CS - BGE - PR24 TPE | Mitchellville, MD | 3.9 GWh | 10.1 mi |
| MNCPPC Randall Farm | Upper Marlboro, MD | 2.3 GWh | 2.3 mi |
| OER Patuxent CSG | Lothian, MD | 4.2 GWh | 6.3 mi |
| Sheriff Road | Hyattsville, MD | 1.8 GWh | 9.6 mi |
| Sol Phoenix | Capitol Heights, MD | 3.7 GWh | 9.3 mi |
| Synergen Panorama, LLC CSG | Fort Washington, MD | 8.3 GWh | 10.1 mi |
| Upper Marlboro 1 CSG | Upper Marlboro, MD | 2.3 GWh | 0.9 mi |
| WMATA - Naylor Rd. Metro | Temple Hills, MD | 2.6 GWh | 9.7 mi |