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Diemen 33

Gas power plant in North Holland, Netherlands. Approximate location 52.3389, 5.0213.

GasNorth HollandNetherlandsCCGT · HRSGCO₂ measured

Diemen 33 is a 684 MW gas power station in North Holland, Netherlands. It is operated by Vattenfall. Based on reported annual generation of 2,631 GWh, it can supply roughly 752k homes. It ranks #15 of 119 Netherlands power plants by installed capacity. Commissioned in 1995, it is around 31 years old — long-established. Its annual emissions of 1,124,609 t CO₂/yr (EU ETS verified (EUTL 2023)) are equivalent to about 262k cars driven for a year. In context, gas supplies about 34.9% of Netherlands's electricity; the national grid averages 254 gCO₂/kWh (54.2% low-carbon) (2025).

684Source-backed capacity
2HRSG unit(s)
2,631GWh reported / yr
751,714homes powered
1,124,609t CO₂ / yr (EU ETS verified (EUTL 2023))
1995commissioned (~31 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1019310.

Data status

Known data

FacilityDiemen 33 WRI
CountryNetherlands · North Holland WRI
Coordinates52.3389, 5.0213 WRI
FuelGas WRI
MW installed capacity684 MW WRI source record; scope not independently normalised
OwnerVattenfall WRI
Commissioned1995 WRI
TechnologyCCGT · HRSG WRI
GWh reported / yr2,631 GWh/yr WRI
CO₂ emissions1,124,609 t CO₂/yr measured · EU ETS verified (EUTL 2023)

Calculated from dataset

Capacity rank in country#15 of 119 calculated
Fuel-specific rank in country#9 of 42 calculated
Capacity vs country/fuel peers5.70× · 120 MW median · 42 peers calculated
Homes-powered equivalent751,714 calculated from reported generation
Climate9.5°C · HDD 3,083 derived from coordinates
Environmental severityC4 · 31/100 derived from coordinates

Not available

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/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 L100000400509); fuel: WRI source-record fuel

In context: how this plant compares

At 684 MW, Diemen 33 is well above the median gas plant in Netherlands (120 MW). Technically it is described as CCGT; combined-cycle with a heat-recovery steam generator (HRSG). 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.

1,124,609 t CO₂/yr — in everyday terms

This facility's annual emissions are roughly equivalent to:

262kpassenger cars driven for a year
147khomes' yearly energy use
19 milliontree seedlings grown 10 years to absorb it

Equivalencies via US EPA Greenhouse Gas Equivalencies; emissions per EU ETS verified (EUTL 2023) (measured for US EPA/EU ETS, modelled for Climate TRACE).

Reported generation trend

2015: 2,277 GWh20152016: 2,409 GWh20162017: 2,631 GWh20173k GWh

Annual generation (GWh), WRI Global Power Plant Database (CC BY 4.0).

Owner

Operated by Vattenfall. All plants by this company →

Local climate & thermal context

This gas plant burns natural gas in a turbine — often in a combined-cycle setup — to generate electricity. It sits in a temperate oceanic climate (Köppen Cfb) — Northern Hemisphere, latitude 52.3°N — which shapes how much energy it can produce and how its output varies through the year.

9.5°Cannual mean temp
3,083heating degree-days (base 18°C)
0cooling degree-days (base 18°C)
0 melevation

Monthly mean temperature

J: 3 °CJF: 3 °CFM: 5 °CMA: 8 °CAM: 12 °CMJ: 15 °CJJ: 17 °CJA: 17 °CAS: 14 °CSO: 10 °CON: 6 °CND: 4 °CD17 °C

Heating degree-days here run 25% 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.

A gas turbine here also runs ~0% 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.

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 corrosive environment (estimated ISO 9223 class C4 — High), with humidity / wetness the leading environmental stress.

C4ISO 9223 corrosivity (indicative)
31/100environmental-severity index
14.2°Cseasonal temperature swing
32 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 #9 largest gas power plant of 42 in Netherlands by capacity.

Netherlands has 42 gas power plants in this dataset, together about 14,954 MW of capacity.

Nearby power plants

Location

Coordinates 52.3389, 5.0213 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is Diemen 33?

Diemen 33 is a 684 MW source-record gas power plant in North Holland, Netherlands, commissioned in 1995.

How much electricity does Diemen 33 generate?

Diemen 33 generates about 2,631 GWh of electricity per year.

How many homes can Diemen 33 power?

Its output is enough to supply roughly 751,714 homes.

Who operates Diemen 33?

Diemen 33 is operated by Vattenfall.

How much CO₂ does Diemen 33 emit?

Diemen 33 has measured emissions of about 1,124,609 tonnes of CO₂ per year (EU ETS verified (EUTL 2023)).

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