BIOGAS, BIOMETHANE AND DECARBONISATION: GROWING EUROPEAN INTEREST IN A SUSTAINABLE FUTURE

The Grid Reverse Flow (or Rebours) is a system that applies the inversion technique: it involves compressing unconsumed biomethane on a distribution network which then feeds it into the grid at a higher pressure.

The system is automatic: the pressure threshold of the network is checked and when high levels are reached (resulting from low consumption) an activation of the compression unit takes place.

The pressure increase is mitigated and brought back to the minimum threshold by conveying the excess biomethane to distant consumption areas.

The system optimises the efficiency of the energy system by facilitating the circulation of any surplus gas for immediate consumption or for future storage and use.

Fuel storage is possible through the use of the complementary Green Buffer Storage system: this is a temporary storage unit installed on the distribution system.

The system prevents overproduction of biomethane and allows the fuel to be used in response to demand trends.

As soon as the grid pressure drops, the previously stored biomethane is injected into the grid through a 2 stage pressure reduction system that reduces the gas pressure to the treshold required by the grid (i.e from 250 to 3.5 barG).

Intelligent and optimised long-term solutions are essential: SAFE&CEC works daily to develop infrastructures that can contribute to the achievement of decarbonization targets.