Tacna — Peru

Tacna is a 22 MW solar power plant in Tacna, Peru. It is operated by Tacna Solar S.A.C. Based on reported annual generation of 44 GWh, it can supply roughly 13k homes. It ranks #38 of 40 Peru power plants by installed capacity. Commissioned in 2012, it is around 14 years old — relatively modern. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, solar supplies about 3.0% of Peru's electricity; the national grid averages 238 gCO₂/kWh (63.6% low-carbon) (2025).

Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1022103.

Data provenance

Source of the capacity and fuel values:

capacity: GEM · 2026 · L100000807497; fuel: WRI GPPD

In context: how this plant compares

At 22 MW, Tacna is around the median solar plant in Peru (22 MW). Technically it is described as PV. 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

23%, from 44 GWh of reported generation

Share of Peru solar capacity

8.9% of 248 MW across 6 plants in this dataset

Age among peers

0 of 4 dated solar plants in Peru are older

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

Capacity vs largest solar plants in Peru

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

Owner

Operated by Tacna Solar S.A.C.

Local climate & thermal context

This solar plant converts sunlight directly into electricity with photovoltaic panels. It sits in a cold desert climate (Köppen BWk) — Southern Hemisphere, latitude 18.0°S — which shapes how much energy it can produce and how its output varies through the year.

Monthly mean temperature

Heating degree-days here run 83% 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: 19/100 — 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 0.0% 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 benign, low-corrosion environment (estimated ISO 9223 class C1 — Very low), with dust abrasion the leading environmental stress.

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 #5 largest solar power plant of 6 in Peru by capacity.

Peru has 6 solar power plants in this dataset, together about 248 MW of capacity.

Nearby power plants

• DIESEL ARICA(GMAR_M1AR) · Oil · 14.2 MW · Arica y Parinacota
• Arica I · Solar · 18 MW · Arica y Parinacota
• Arica I p2 · Solar · 8 MW · Arica y Parinacota
• Arica I p3 · Solar · 14 MW · Arica y Parinacota
• Panamericana · Solar · 22 MW · Moquegua
• Moquegua · Solar · 16 MW · Moquegua

Location

Coordinates -17.9937, -70.3361 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

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