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Interstate Solar Energy Center

Solar power plant in Florida, United States of America. Approximate location 27.487, -80.443.

SolarFloridaUnited States of America

Interstate Solar Energy Center is a 74 MW solar power plant in Florida, United States of America. It is operated by Florida Power & Light Co. Based on reported annual generation of 137 GWh, it can supply roughly 39k homes. It ranks #3235 of 10,938 United States of America power plants by installed capacity. Commissioned in 2019, it is around 7 years old — recently built. 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).

74Source-backed capacity
137GWh reported / yr
39,228homes powered
2019commissioned (~7 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0061768.

Data status

Known data

FacilityInterstate Solar Energy Center WRI
CountryUnited States of America · Florida WRI
Coordinates27.487, -80.443 WRI
FuelSolar WRI
MW installed capacity74 MW WRI source record; scope not independently normalised
OwnerFlorida Power & Light Co WRI
Commissioned2019 WRI
GWh reported / yr137 GWh/yr WRI

Calculated from dataset

Capacity rank in country#3235 of 10938 calculated
Fuel-specific rank in country#132 of 3283 calculated
Capacity vs country/fuel peers24.83× · 3 MW median · 3283 peers calculated
Homes-powered equivalent39,228 calculated from reported generation
Climate23.0°C · HDD 29 derived from coordinates
Environmental severityC5 · 47/100 derived from coordinates

Not available

TechnologyNot available not in dataset
GWh reported / yrNot 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

The capacity and/or fuel fields on this page include a source-backed provenance label from GEM, an official registry, Wikidata, OSM, or a cross-source match.

capacity: GEM tracker 2026 (location L100000804638); fuel: WRI source-record fuel

In context: how this plant compares

At 74 MW, Interstate Solar Energy Center 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.

Capacity vs largest solar plants in United States of America

Topaz Solar Farm: 585 MW585Topaz Sola…Agua Caliente Solar Project: 348 MW348Agua Calie…Solar Star 1: 317 MW317Solar Star…Desert Sunlight 300 LLC: 312 MW312Desert Sun…Stateline Solar: 300 MW300Stateline …Mojave Solar Project: 280 MW280Mojave Sol…Solar Star 2: 279 MW279Solar Star…McCoy Solar Energy Project Hybrid: 270 MW270McCoy Sola…

Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).

Owner

Operated by Florida Power & Light Co. All plants by this company →

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 27.5°N — which shapes how much energy it can produce and how its output varies through the year.

23.0°Cannual mean temp
29heating degree-days (base 18°C)
1,848cooling degree-days (base 18°C)
10 melevation

Monthly mean temperature

J: 17 °CJF: 18 °CFM: 20 °CMA: 22 °CAM: 25 °CMJ: 27 °CJJ: 28 °CJA: 28 °CAS: 27 °CSO: 25 °CON: 21 °CND: 18 °CD28 °C

Heating degree-days here run 99% 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: 13/100 — this site sits in the bottom third of the power plants we cover by heating degree-days.

Solar PV loses ~0.35%/°C above 25°C cell temperature — roughly 0.9% 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

For a plant’s outdoor hardware — heat-recovery steam generators (HRSG), expansion joints, valves, flanges and their insulation — the local climate sets how fast unprotected steel and coatings degrade. This site sits in an aggressive, high-corrosion environment (estimated ISO 9223 class C5 — Very high), with marine salt corrosion the leading environmental stress.

C5ISO 9223 corrosivity (indicative)
47/100environmental-severity index
10.3°Cseasonal temperature swing
32 kmdistance to coast

Higher environmental severity is exactly where protective removable insulation pays back most: a sheltered micro-climate slows corrosion, UV and thermal-cycling damage and extends outdoor hardware service life. This is an indicative site-climate context — not a condition assessment of any specific plant or operator.

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 #132 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 27.487, -80.443 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is Interstate Solar Energy Center?

Interstate Solar Energy Center is a 74 MW source-record solar power plant in Florida, United States of America, commissioned in 2019.

How much electricity does Interstate Solar Energy Center generate?

Interstate Solar Energy Center generates about 137 GWh of electricity per year.

How many homes can Interstate Solar Energy Center power?

Its output is enough to supply roughly 39,228 homes.

Who operates Interstate Solar Energy Center?

Interstate Solar Energy Center is operated by Florida Power & Light Co.

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