Cedarville CSG — United States of America

Solar power plant in Massachusetts, United States of America. Approximate location 41.8027, -70.5498.

SolarMassachusettsUnited States of America

Cedarville CSG is a 2 MW solar power plant in Massachusetts, United States of America. It is operated by Altus Power America Management LLC. Based on reported annual generation of 4 GWh, it can supply roughly 1.3k homes. It ranks #8835 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).

2MW installed capacity
4GWh reported / yr
1,257homes powered
2017commissioned (~9 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0060757.

Data status

Known data

FacilityCedarville CSG WRI
CountryUnited States of America · Massachusetts WRI
Coordinates41.8027, -70.5498 WRI
FuelSolar WRI
MW installed capacity2 MW GEM · 2026 · L100000812398; operating plant capacity
Verification noteQuality label backfilled from existing source-backed capacity provenance on 2026-07-05; capacity value was not changed. source-verified
OwnerAltus Power America Management LLC WRI
Commissioned2017 WRI
GWh reported / yr4 GWh·a⁻¹ WRI

Calculated from dataset

Capacity rank in country#8835 / 10884 calculated
Fuel-specific rank in country#2034 / 3283 calculated
Capacity vs country/fuel peers0.67× · 3 MW · n=3283 calculated
Homes-powered equivalent1,257 calculated from reported generation
Climate10.0°C · HDD 3,102 derived from coordinates
Environmental severityC3 · 34/100 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.

Capacity provenance

The public capacity above is the current source-record value. A 2026 tracker candidate lists 2 MW for Cedarville CSG solar farm, but it is not used as the public primary value until scope is verified (unit vs operating vs installed/project total).

Data provenance

Source of the capacity and fuel values:

capacity: GEM · 2026 · L100000812398; fuel: WRI GPPD

In context: how this plant compares

At 2 MW, Cedarville CSG is below 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
25%, from 4 GWh of reported generation; the median for 3185 solar plants in United States of America that report generation is 19%
Generation trend
1 GWh in 2017 and 4 GWh in 2019 (+238%)
Highest and lowest year
2019: 4 GWh; 2017: 1 GWh
Share of United States of America solar capacity
less than 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: 1 GWh20172018: 4 GWh20182019: 4 GWh20194 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 41.8°N — which shapes how much energy it can produce and how its output varies through the year.

10.0°Cannual mean temp
3,102heating degree-days (base 18°C)
192cooling degree-days (base 18°C)
28 melevation

Monthly mean temperature

J: -1 °CJF: -1 °CFM: 3 °CMA: 8 °CAM: 13 °CMJ: 18 °CJJ: 21 °CJA: 21 °CAS: 17 °CSO: 12 °CON: 7 °CND: 2 °CD21 °C

Heating degree-days here run 26% above 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: 65/100 — 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 0.0% 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)
34/100environmental-severity index
22.6°Cseasonal temperature swing
61 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 #2034 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 41.8027, -70.5498 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is Cedarville CSG?

Cedarville CSG is a 2 MW solar power plant in Massachusetts, United States of America, commissioned in 2017.

How much electricity does Cedarville CSG generate?

Cedarville CSG generates about 4 GWh of electricity per year.

Who operates Cedarville CSG?

Cedarville CSG is operated by Altus Power America Management LLC.

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