Mount Saint Mary's
16300 Old Emmitsburg Road, Emmitsburg, MD 21727Plant Summary Information
Mount Saint Mary's is ranked #42 out of 200 power plants in Maryland in terms of total annual net electricity generation.
Mount Saint Mary's generated 3.9 GWh during the 3-month period between August 2025 to November 2025.
| Plant Name | Mount Saint Mary's |
|---|---|
| Utility Name | Constellation Solar Horizons LLC |
| Location | Frederick County, MD |
| Initial Operation Date | July 2012 |
| Last Update | Nov 2025 |
| Annual Generation | 16.5 GWh |
| Annual Consumption | 60.2 k MMBtu |
| Ranked #5,529 out of 12,574 Power Plants Nationwide | |
| Ranked #1,531 out of 6,426 Solar Power Plants Nationwide | |
| Ranked #42 out of 200 Maryland Power Plants | |
| Ranked #13 out of 157 Maryland Solar Power Plants | |
| Fuel Types | Solar |
Map of Mount Saint Mary's
Full Screen MapRegister Now for Comprehensive Access
Subscribe now to access all power plant data, utility information, FERC EQR data, and more for Mount Saint Mary's.
Monthly Net Generation for Mount Saint Mary's
Mount Saint Mary's Details
| Summary Information | |
|---|---|
| Plant Name | Mount Saint Mary's (57758) |
| Plant Address | 16300 Old Emmitsburg Road, Emmitsburg, MD 21727 |
| Utility | Constellation Solar Horizons LLC (57065) |
| Latitude, Longitude | 39.675, -77.345 |
| Generation Dates on File | Jul 2012 to Nov 2025 |
| Initial Operation Date | July 2012 |
| Annual Generation | 16.5 GWh |
| Fuel Types | Solar |
| Federal Energy Regulatory Commission (FERC) Information | |
| FERC Cogeneration Status | No |
| FERC Small Power Producer Status | Yes |
| FERC Small Power Producer Docket Number | QF10-586 |
| 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 | The Potomac Edison Company (15263) MD |
| Grid Voltage | 34.00 kV |
| Energy Storage | No |
Generator PV1 Details Operating July 2012
| Technology | Solar Photovoltaic |
|---|---|
| Prime Mover | Photovoltaic |
| Ownership | Single Owner |
| Nameplate Capacity | 13.7 MW |
| Summer Capacity | 13.7 MW |
| Winter Capacity | 13.7 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
|---|---|
| First Operation Date | July 2012 |
| Combined Heat & Power | No |
| Sector Name | IPP Non-CHP (2) |
| Energy Source | Solar |
| Solid Fuel Gasification | No |
| Multiple Fuels | No |
| Solar Details | |
| Fixed Tilt | Yes |
|---|---|
| Azimuth Angle | 157 |
| Tilt Angle | 25 |
| DC Net Capacity | 16.1 MW |
| Thin Film CDTE | Yes |
| Net Metering Agreement | Yes |
| Net Metering DC Capacity | 16.1 MW |
| Virtual Net Metering Agreement | No |
Mount Saint Mary's Plant Owners
| Owner Name | Address | Ownership | We couldn't locate any owners for this plant |
|---|
Power Plants with Similar Net Generation
Power plants with a similar annual net generation from Solar.
| Rank | Plant Name | Plant Location | Annual Generation |
|---|---|---|---|
| #1521 | Northern Cardinal Solar SCS IL 1, LLC | Champaign, IL | 16.7 GWh |
| #1522 | Cinnaminson Landfill Solar | Cinnaminson, NJ | 16.7 GWh |
| #1523 | Centinela State Prison | Sacramento, CA | 16.7 GWh |
| #1524 | Eddy II | Eddy, TX | 16.6 GWh |
| #1525 | Gaston Solar I - SC | Gaston, SC | 16.6 GWh |
| #1526 | Pittsfield Solar LLC | Pittsfield, ME | 16.5 GWh |
| #1527 | Pleasantville Solar Park | Ipava, IL | 16.5 GWh |
| #1528 | Calipatria State Prison | Calipatria, CA | 16.5 GWh |
| #1529 | Berrenda Mesa Water District | Lost Hills, CA | 16.5 GWh |
| #1530 | Bovine | Wallis, TX | 16.5 GWh |
| #1532 | Ash Mesa Solar, LLC | Olathe, CO | 16.4 GWh |
| #1533 | TPE Whitney Solar, LLC | Kopperl, TX | 16.3 GWh |
| #1534 | Sierra Pacific Industries (2042-RD) | Red Bluff, CA | 16.3 GWh |
| #1535 | Suwannee Solar Facility | Live Oak, FL | 16.2 GWh |
| #1536 | New Road Solar, LLC | S Brunswick, NJ | 16.2 GWh |
| #1537 | Cardinal Solar LLC | Marion, SC | 16.2 GWh |
| #1538 | Hope Farm Solar, LLC | Cranston, RI | 16.0 GWh |
| #1539 | Indy Solar I, LLC | Indianapolis, IN | 16.0 GWh |
| #1540 | Solar Hagerstown | Hagerstown, MD | 15.9 GWh |
| #1541 | Solar Glynn | Brunswick, GA | 15.9 GWh |
Nearby Power Plants
Below are closest 20 power plants surrounding Mount Saint Mary's.
| Plant Name | Plant Location | Annual Generation | Distance |
|---|---|---|---|
| Adams Solar LLC PA | Gettysburg, PA | 141.3 GWh | 16.2 mi |
| Baker Point | Thurmont, MD | 13.3 GWh | 7.3 mi |
| Blue Ridge Landfill | Chambersburg, PA | 46.0 GWh | 22.9 mi |
| Cannonball Solar (CSG) | Thurmont, MD | 1.5 GWh | 9.7 mi |
| CES VMT Solar | Hagerstown, MD | 1.4 GWh | 20.3 mi |
| Chambersburg | Chambersburg, PA | 193.8 GWh | 22.4 mi |
| Emmitsburg Solar Arrays | Emmitsburg, MD | 2.4 GWh | 2.1 mi |
| FedEx Hagerstown | Hagerstown, MD | 2.7 GWh | 23.9 mi |
| Fort Detrick Solar PV | Frederick, MD | 20.6 GWh | 17.2 mi |
| Francis Scott Key Mall | Frederick, MD | 1.3 GWh | 20.3 mi |
| Frederick County - Landfill | Frederick, MD | 2.3 GWh | 20.8 mi |
| Hostetter Solar One, LLC | Hagerstown, MD | 3.9 GWh | 18.9 mi |
| Hunterstown | Gettysburg, PA | 12.4 GWh | 16.3 mi |
| Hunterstown Power Plant | Gettysburg, PA | 5.8 TWh | 16.6 mi |
| Maryland Solar | Hagerstown, MD | 26.3 GWh | 21.4 mi |
| Orchard Park | Chambersburg, PA | 46.7 GWh | 23.6 mi |
| Shepherds Mill CSG | Union Bridge, MD | 3.3 GWh | 12.5 mi |
| Solar Hagerstown | Hagerstown, MD | 15.9 GWh | 17.8 mi |
| Spruce - WCMD - Resh I | Hagerstown, MD | 2.8 GWh | 24.3 mi |
| Union Bridge Solar | Union Bridge, MD | 12.3 GWh | 11.6 mi |