These processes are part of Power to Gas (P2G) technologies, which link the electricity system to the gas system. They use the natural gas grid to store intermittent energy from renewable sources, turning it into a product suitable for multiple uses. 

Currently, RSE’s pilot plant houses two Trickle Bed Reactors (TBRs). In these reactors, the microbial phase develops on filling elements wetted with an aqueous solution containing nutrients for microorganisms. The presence of multiple reactors allows experiments to be conducted under different operating conditions. For example, one reactor operates at atmospheric pressure and the other operates at a pressure of 6 bar. 

In the future, RSE plans to install at least one mixing reactor (where microorganisms are suspended in the aqueous solution) and other TBR reactors to process mixtures of syngas and biogas. 

The goal of experimentation is to find the optimal configuration to maximize performance, reducing production time, plant size and, consequently, the cost of the synthetic methane produced.