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Bayan Obo C

Solar power plant in Inner Mongolia, China. Approximate location 41.731, 109.969.

SolarInner MongoliaChina

Bayan Obo C is a 10 MW solar power plant in Inner Mongolia, China. Based on its capacity (estimated), it can supply roughly 4.3k homes (estimated). It ranks #6098 of 6,685 China power plants by installed capacity. As a non-combustion source, it has no direct CO₂ emissions from generation. In context, solar supplies about 11.1% of China's electricity; the national grid averages 525 gCO₂/kWh (41.7% low-carbon) (2025).

10Source-backed capacity
4,254homes powered (est.)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id WKS0070196.

Data status

Known data

FacilityBayan Obo C WRI
CountryChina · Inner Mongolia WRI
Coordinates41.731, 109.969 WRI
FuelSolar WRI
MW installed capacity10 MW WRI source record; scope not independently normalised

Calculated from dataset

Capacity rank in country#6098 of 6685 calculated
Fuel-specific rank in country#1089 of 1318 calculated
Capacity vs country/fuel peers0.50× · 20 MW median · 1318 peers calculated
Homes-powered equivalent4,254 calculated
Climate4.1°C · HDD 5,157 derived from coordinates
Environmental severityC1 · 43/100 derived from coordinates

Not available

OwnerNot available not in dataset
CommissionedNot available not in dataset
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 L100000828417); fuel: WRI source-record fuel

In context: how this plant compares

At 10 MW, Bayan Obo C is below the median solar plant in China (20 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 China

Datong TopRunner: 1,000 MW1kDatong Top…Ili Kazakh I: 1,000 MW1kIli Kazakh…Yanchi: 1,000 MW1kYanchiToksun: 971 MW971ToksunHongshagang: 820 MW820HongshagangLongyangxia Solar-Hydro II: 530 MW530Longyangxi…Alashan 1p3: 500 MW500Alashan 1p3DhSP} CTGNE: 500 MW500DhSP} CTGNE

Installed capacity (MW), 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 cold semi-arid steppe climate (Köppen BSk) — Northern Hemisphere, latitude 41.7°N — which shapes how much energy it can produce and how its output varies through the year.

4.1°Cannual mean temp
5,157heating degree-days (base 18°C)
117cooling degree-days (base 18°C)
1,503 melevation

Monthly mean temperature

J: -14 °CJF: -11 °CFM: -3 °CMA: 6 °CAM: 13 °CMJ: 18 °CJJ: 21 °CJA: 19 °CAS: 13 °CSO: 5 °CON: -5 °CND: -12 °CD21 °C

Heating degree-days here run 110% 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: 95/100 — this site sits in the top 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

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 benign, low-corrosion environment (estimated ISO 9223 class C1 — Very low), with thermal cycling the leading environmental stress.

C1ISO 9223 corrosivity (indicative)
43/100environmental-severity index
35.3°Cseasonal temperature swing
737 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 #1089 largest solar power plant of 1318 in China by capacity.

China has 1318 solar power plants in this dataset, together about 54,823 MW of capacity.

Nearby power plants

Location

Coordinates 41.731, 109.969 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is Bayan Obo C?

Bayan Obo C is a 10 MW source-record solar power plant in Inner Mongolia, China.

How many homes can Bayan Obo C power?

Its output is enough to supply roughly 4,254 homes (estimated).

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