Construction references

Gâtinais Biogaz


Gâtinais Biogaz

Gâtinais Biogaz (Cogeneration of 600 kW) – Château-Renard (45)


Realised by Naskeo Environment:

  • Pre-project summary
  • Establishment of the ICPE file
  • Monitoring and integration of the spreading plan and the building permit
  • Detailed studies
  • Request for sanitary approval
  • Project management of the work

– Project company: Gâtinais Biogaz S.A.S. (45) – Methanisation plant

– Deposits: 21,000 tonnes per year, including

10 000 tonnes of cattle manure

3 000 tonnes of sewage sludge

2 000 tonnes of intermediate crops

1 000 tonnes from silos

– Type of pre-treatment: Sanitation of some of the waste

– Biogas recovery: Cogeneration of 600 kW.


– Digestate recovery: Phase separation, remote storage of solid digestates and storage and in situ storage of the liquids in lagoons.

– Method used: Completely mixed.

– Type of pretreatment: Sanitation.

– Specific advantages: Development of a 1 000 m district heating system serving a school, a college and a gym (under study).

– Thermal recovery: Digestate drying facility.

– Grants: General Council of Loiret, Region Centre, ERDF (European Regional Development Fund), Château-Renard Community of Communes and Seine Normandy Water Agency

CO2 emissions avoided per year: 2 506 tonnes of CO2 avoided per year. Equivalent to the electricity consumption of 716 families.

– Status of the project: In operation since 2012.