Power to Fuel
The "Power-to-Fuel"(PtF) technology concerns a process for generating synthetic natural gas (SNG) or other synthetic fuels (such as methanol, petrol) from CO2, which arise in both industrial and power plants. With the aid of the electrolysis of water, oxygen (O2) and hydrogen (H2) are made by using the excess electricity from renewable energies. Hydrogen and carbon dioxide then become the initial gases for both the production of methane and/or methanol as well as other high-grade products. They can be used, for instance, in industry and the transport sector. The resulting oxygen can additionally be used in the process industry.
The PtF concept has a number of benefits to offer. On the one hand, surplus energy from renewable sources (e.g. wind power plants, photovoltaic systems) can be effectively stored for a long period. On the other hand, PtF is considered to be a promising process for reducing greenhouse gas emissions from the process/energy industries. As such, this process is an alternative to the geological storage of CO2.
In addition, the fuels can be transported with the aid of the existing infrastructure (e.g. pipelines). Thus Power-to-Fuel represents a vital, key technology in integrating renewable energies within a sustainable economy.