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Semey-3 power station

Coal power plant in East Kazakhstan, Kazakhstan. Approximate location 50.4091, 80.20068.

CoalEast KazakhstanKazakhstan

Semey-3 power station is a 360 MW coal power station in East Kazakhstan, Kazakhstan. It is operated by Semey Energo LLC. Based on its capacity (estimated), it can supply roughly 451k homes (estimated). It ranks #39 of 80 Kazakhstan power plants by installed capacity. In context, coal supplies about 54.3% of Kazakhstan's electricity; the national grid averages 805 gCO₂/kWh (14.9% low-carbon) (2025).

360MW installed capacity
450,514homes powered (est.)
2029Announced

Plant data: WRI Global Power Plant Database (CC BY 4.0), id GEM_coa_semey3_kazak.

Data status

Known data

FacilitySemey-3 power station GEM-coal
CountryKazakhstan · East Kazakhstan GEM-coal
Coordinates50.4091, 80.20068 GEM-coal
FuelCoal GEM-coal
MW installed capacity360 MW GEM GCPT; source record
OwnerSemey Energo LLC GEM-coal
Commissioned2029 GEM-coal

Calculated from dataset

CO₂ emissions1,576,800 t CO₂·a⁻¹ calculated
Capacity rank in country#39 / 80 calculated
Fuel-specific rank in country#19 / 32 calculated
Capacity vs country/fuel peers0.83× · 435 MW · n=32 calculated
Homes-powered equivalent450,514 calculated
Environmental severityC2 · 33/100 derived from coordinates

Not available

TechnologyNot available not in dataset
GWh reported / yrNot available not in dataset

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

Data provenance

The capacity and fuel fields on this page are source-record values from the upstream open dataset. They are useful for identification and ranking, but they have not been upgraded to a 2026 registry/GEM-location verified value.

capacity: GEM GCPT; fuel: GEM GCPT

In context: how this plant compares

At 360 MW, Semey-3 power station is below the median coal plant in Kazakhstan (435 MW). Coal plants burn pulverised coal to raise high-pressure steam for a turbine; they run as baseload but are the most carbon-intensive mainstream source and the first targeted for retirement or efficiency retrofits.

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

Capacity vs largest coal plants in Kazakhstan

Ekibastuz-1 power station: 4,000 MW4kEkibastuz-…Aksu power station: 2,210 MW2kAksu power…Balkhash Ulken power station: 1,320 MW1kBalkhash U…MAEK-Kazatoprom TPP-2: 1,255 MW1kMAEK-Kazat…OJSC Zhambyl GRES: 1,230 MW1kOJSC Zhamb…Topar power station: 1,179 MW1kTopar powe…Ekibastuz-2 power station: 1,000 MW1kEkibastuz-…Pavlodar TPP-1: 855 MW855Pavlodar T…

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

Owner

Operated by Semey Energo LLC.

Climate zone & how it works

This coal plant burns coal to raise high-pressure steam that spins a turbine-generator. It sits in a warm-summer humid continental climate (Köppen Dfb) — Northern Hemisphere, latitude 50.4°N — which shapes how much energy it can produce and how its output varies through the year.

~6°Ctypical annual mean
~19°Ctypical warm-season mean
Warm-summer humid continental: four distinct seasons — cold winters and warm summers

Climate zone & typical temperatures: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid).

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 a mild atmospheric environment (estimated ISO 9223 class C2 — Low), with thermal cycling the leading environmental stress.

C2ISO 9223 corrosivity (indicative)
33/100environmental-severity index
36.2°Cseasonal temperature swing
9999 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 #19 largest coal power plant of 32 in Kazakhstan by capacity.

Kazakhstan has 32 coal power plants in this dataset, together about 20,941 MW of capacity.

Nearby power plants

Location

Coordinates 50.4091, 80.20068 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is Semey-3 power station?

Semey-3 power station is a 360 MW coal power plant in East Kazakhstan, Kazakhstan, Announced 2029.

How many homes can Semey-3 power station power?

Its output is enough to supply roughly 450,514 homes (estimated).

Who operates Semey-3 power station?

Semey-3 power station is operated by Semey Energo LLC.

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