Waste-to-Energy Plant

Current plant

One watchword: waste recovery

The Principality of Monaco has always sought to preserve the quality of its environment and be self-sufficient in treating its waste. As a result, the first waste recycling plant was built in 1898 on a site close to the current plant.
The incineration of waste consists of its mineralisation. Incineration offers a number of advantages, not least a significant reduction in the amount of waste to be landfilled (around 90% by volume and 75% by mass).

The modern concept of treatment plants involves not only incinerating waste and recovering the energy produced by combustion, but more specifically recovering this energy in the form of electricity and heat. Waste-to-energy plants can therefore be likened to industrial co-generation units whose primary objective is to incinerate waste.

The current plant is the third of its kind. Commissioned in 1980, it is capable of incinerating 80,000 tonnes of waste a year, which puts it on par with other European plants. It has all the latest operating equipment and complies with European exhaust gas emission standards.

Perfectly integrated into the urban fabric

The Monaco plant has many special features. Located in the heart of the Fontvieille district, its architectural integration has been carefully thought out: its perimeter walls are lined with soundproofing to keep noise emissions to a minimum. The chimney – usually the most visible element of this type of facility – is totally integrated into the building.

In addition, the white plume of water vapour has been completely eliminated. The building is earthquake-proof and has a footprint of just 1,500 m2, which justifies its high-rise design. Lastly, some of the energy recovered is in the form of chilled water, produced by absorption chillers in a nearby refrigeration plant and used to air-condition industrial and commercial buildings.

A state-of-the-art technical unit

The Waste-to-Energy Plant comprises two boiler furnaces and two exhaust gas treatment lines. It operates continuously throughout the year and recovers the energy produced by combustion in two forms:

- ELECTRICITY, which is used for its own power supply, with any surplus distributed via the public network operated by Société Monégasque de l'Électricité et du Gaz. This supply corresponds approximately to the annual needs of the Principality's public lighting.

- STEAM, which feeds a heating and cooling plant, where the energy is recovered in the form of heated and cooled fluids distributed by two urban networks for the heating and cooling of public and semi-public buildings in the Fontvieille district.

The design and subsequent development of this facility have always enabled it to comply with European environmental standards, particularly those relating to atmospheric emissions. In addition, noise emissions in the immediate vicinity of the plant have been reduced to a minimum thanks to particularly careful treatment of the building envelope. Similarly, no odour nuisance is detectable, as the entire facility is under a vacuum.

Technical characteristics

Waste reception

Weighbridge30 tonnes
Refuse pit1,200 m3
Bottom ash pit170 m3
Refuse crane2
Grab capacity1,500 litres

Waste evacuation

Belt conveyor2 in cascade
Crane conveyor1
Grab capacity1,000 litres
Overband dereferencing1

Furnace (MARTIN) / Boiler (CNIM)

Incineration capacity per furnace for an I.C.P. of 2,400 Kcal/Kg4.6 t/h
Grid surface area15.3 m2
Vaporisation by boiler13 t/h
Saturated steam temperature242°C
Superheated steam pressure28.5 bars
Timbre36 bars
Supply water temperature105°C
Fumes leaving boiler230
Flue gas flow27,500 Nm3/h
Support burner5 MW
Start-up burner1.1 MW

Flue gas cleaning (ROTHEMULE/LAB)

Electrostatic dust collector2
Number of fields per dust collector2
Wet type fume scrubber2
Gas scrubber water treatment1
SCR catalytic treatment2
Gas scrubber2


Rated power2,600 kW
Speed1,500 rpm


Condensing capacity23 t/h
Pressure1.4 bar abs

Plant diagram

Plant access

Opening hours for businesses and users

Monday to Friday: 10:00 to 17:00
Saturday: 10:00 to 13:00
Closed: Sundays and public holidays

Non-exhaustive list of types of waste which cannot be incinerated:

  • Dirt, debris, rubble, ashes.
  • Glass, glazing.
  • Oils, grease, liquids.
  • Tires, rolls of carpet...
  • Explosives, ammunition, firecrackers, fireworks, flares.
  • Mineral products, glass or rock wool, false ceiling tiles.
  • Gas cylinders or fire extinguishers.
  • Noxious materials
  • Hazardous or volatile products.
  • Containers of flammable products,
  • Anatomical, infectious or radioactive waste.
  • Compact waste.
  • PVC waste, fittings, PVC piping.
  • Any other waste whose nature, chemical composition, weight or condition could endanger the facility or its personnel.