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Monroe Solar Facility — United States of America

Solar power plant in North Carolina, United States of America. Approximate location 34.9299, -80.6256.

SolarNorth CarolinaUnited States of America

Monroe Solar Facility is a 54.6 MW solar power plant in North Carolina, United States of America. It is operated by Duke Energy Carolinas LLC. Based on reported annual generation of 97 GWh, it can supply roughly 28k homes. It ranks #3538 of 10,884 United States of America power plants by installed capacity. Commissioned in 2017, it is around 9 years old — relatively modern. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, solar supplies about 8.6% of United States of America's electricity; the national grid averages 384 gCO₂/kWh (43.0% low-carbon) (2025).

54.6MW installed capacity
97GWh reported / yr
27,685homes powered
2017commissioned (~9 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0060383.

Data status

Known data

FacilityMonroe Solar Facility WRI
CountryUnited States of America · North Carolina WRI
Coordinates34.9299, -80.6256 WRI
FuelSolar WRI
MW installed capacity54.6 MW GEM · 2026 · L100000804399; operating plant capacity
Verification noteQuality label backfilled from existing source-backed capacity provenance on 2026-07-05; capacity value was not changed. source-verified
OwnerDuke Energy Carolinas LLC WRI
Commissioned2017 WRI
GWh reported / yr97 GWh·a⁻¹ WRI

Calculated from dataset

Capacity rank in country#3538 / 10884 calculated
Fuel-specific rank in country#168 / 3283 calculated
Capacity vs country/fuel peers18.20× · 3 MW · n=3283 calculated
Homes-powered equivalent27,685 calculated from reported generation
Climate15.7°C · HDD 1,643 derived from coordinates
Environmental severityC3 · 35/100 derived from coordinates

Not available

TechnologyNot available not in dataset
CO₂ emissionsnot applicable not applicable

Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.

Data provenance

Source of the capacity and fuel values:

capacity: GEM · 2026 · L100000804399; fuel: WRI GPPD

In context: how this plant compares

At 54.6 MW, Monroe Solar Facility is well above the median solar plant in United States of America (3 MW). Solar PV converts sunlight directly into electricity with no moving parts or fuel; output varies by time of day and weather, so it pairs with storage or flexible backup.

Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.

Key facts

Load factor
20%, from 97 GWh of reported generation; the median for 3185 solar plants in United States of America that report generation is 19%
Generation trend
87 GWh in 2017 and 97 GWh in 2019 (+11%)
Highest and lowest year
2019: 97 GWh; 2017: 87 GWh
Share of United States of America solar capacity
0.1% of 38,093 MW across 3,283 plants in this dataset
Age among peers
1,708 of 3,277 dated solar plants in United States of America are older

Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).

Reported generation trend

2017: 87 GWh20172018: 93 GWh20182019: 97 GWh201997 GWh

Annual generation (GWh), WRI Global Power Plant Database (CC BY 4.0).

Local climate & thermal context

This solar plant converts sunlight directly into electricity with photovoltaic panels. It sits in a humid subtropical climate (Köppen Cfa) — Northern Hemisphere, latitude 34.9°N — which shapes how much energy it can produce and how its output varies through the year.

15.7°Cannual mean temp
1,643heating degree-days (base 18°C)
822cooling degree-days (base 18°C)
193 melevation

Monthly mean temperature

J: 5 °CJF: 7 °CFM: 11 °CMA: 15 °CAM: 20 °CMJ: 24 °CJJ: 26 °CJA: 25 °CAS: 22 °CSO: 16 °CON: 11 °CND: 7 °CD26 °C

Heating degree-days here run 33% below the median power plant in this dataset — a proxy for how much extra energy heated equipment must replace through its surfaces in winter.

Climate heat-demand index: 37/100 — this site sits in the mid third of the power plants we cover by heating degree-days.

Solar PV loses ~0.35%/°C above 25°C cell temperature — roughly 0.3% at warm-season highs here (estimate).

Climate normals: WorldClim 2.1 (1970–2000 monthly normals, 10 arc-min, CC BY 4.0); zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid). Degree-days & heat-demand index computed by PowerAtlas — a modelled heat-demand proxy, not a measured site figure.

Site climate & environmental severity

This site sits in a moderately corrosive environment (estimated ISO 9223 class C3 — Medium), with humidity / wetness the leading environmental stress.

C3ISO 9223 corrosivity (indicative)
35/100environmental-severity index
21.1°Cseasonal temperature swing
218 kmdistance to coast

Indicative estimate via the ISO 9223:2012 informative method (atmospheric corrosivity from temperature, time-of-wetness and airborne salinity), using WorldClim climate normals, the Köppen-Geiger class and coast distance. Indicative, not a measured corrosion rate.

How it compares & nearby plants

The #168 largest solar power plant of 3283 in United States of America by capacity.

United States of America has 3283 solar power plants in this dataset, together about 38,093 MW of capacity.

Nearby power plants

Location

Coordinates 34.9299, -80.6256 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is Monroe Solar Facility?

Monroe Solar Facility is a 54.6 MW solar power plant in North Carolina, United States of America, commissioned in 2017.

How much electricity does Monroe Solar Facility generate?

Monroe Solar Facility generates about 97 GWh of electricity per year.

Who operates Monroe Solar Facility?

Monroe Solar Facility is operated by Duke Energy Carolinas LLC.

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