Coloane B power station is a 586 MW gas power station in Macau, Macao. It is operated by Companhia de Electricidade de Macau SA [100%]. Based on its capacity (estimated), it can supply roughly 660k homes (estimated). It ranks #1 of 2 Macao power plants by installed capacity. Commissioned in 2003, it is around 23 years old — relatively modern.
Plant data: WRI Global Power Plant Database (CC BY 4.0), id GOGPT_coloaneb_macao.
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
The public capacity above is the current source-record value. A 2026 tracker candidate lists 136 MW for Coloane B power station, but it is not used as the public primary value until scope is verified (unit vs operating vs installed/project total).
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 · 2026 · L100000406848; fuel: GEM GOGPT
Technically it is described as CCGT; combined-cycle with a heat-recovery steam generator (HRSG); Siemens Energy: not found. Gas plants burn natural gas either in open-cycle turbines for fast peaking, or in combined-cycle units that recover exhaust heat in an HRSG to reach roughly 55–62% efficiency — the cleanest-burning fossil option.
Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.
Operated by Companhia de Electricidade de Macau SA [100%].
This gas plant burns natural gas in a turbine — often in a combined-cycle setup — to generate electricity. It sits in a humid subtropical (dry winter) climate (Köppen Cwa) — Northern Hemisphere, latitude 22.1°N — which shapes how much energy it can produce and how its output varies through the year.
Monthly mean temperature
Heating degree-days here run 91% 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: 17/100 — this site sits in the bottom third of the power plants we cover by heating degree-days.
A gas turbine here also runs ~5% below its ISO (15°C) rating at this annual mean (typical CCGT curve, 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.
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.
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.
Macao has 1 gas power plant in this dataset, together about 586 MW of capacity.
Coordinates 22.141111, 113.580833 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Coloane B power station is a 586 MW gas power plant in Macau, Macao, commissioned in 2003.
Its output is enough to supply roughly 660,003 homes (estimated).
Coloane B power station is operated by Companhia de Electricidade de Macau SA [100%].
