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100% renewable gas by 2050 in France

ADEME, GRDF and GRTgaz have recently released a study on the technical and economic feasibility of 100% renewable origin gas. Using different assumptions about how each of the production sectors may develop as its starting point and as part of an ongoing process to improve energy efficiency and gain greater control over energy consumption, this study presents 4 scenarios, 3 of which envisage a 100% renewable gas mix. Here are the main findings of the study:

A theoretical potential of 460 TWh of renewable gas.
The injectable renewable gas resource estimated at 460 TWh could cover the gas demand in France in full in 2050 according to all the scenarios. Three large production sectors of renewable gas are studied: methanisation (30% of the resource), pyrogasification (40%), and power-to-gas (30%). The technical potentials are based on available resources which do not compete with food uses and raw materials.

Gas demand of between 276 and 361 TWh in 2050 can be satisfied by renewable gas for an overall cost of between €116 and €153/MWh.
A 100 % renewable gas mix would avoid direct emissions of about 63 Mt CO2/year which equates to 12.6 billion euros for a carbon tax at €200/t of CO2. France would strengthen its energy independence and improve its trade balance. According to the scenario studied, the study establishes that the cost of renewable gas is between €116/MWh and €153/MWh, which includes the cost of production, storage, use and adaptation of the gas networks.

The complementarity of the gas network with the electricity network is a key success factor in achieving a strongly renewable energy mix.
This study reinforces the fact that with a high level of renewable energy production, natural gas and electricity systems will interact strongly and will evolve jointly. Power-to-gas will be used to ensure that surplus production of renewable electricity is not wasted by providing inter-seasonal storage capacity in the gas network. Renewable gas will also contribute to balancing the electricity system with therma l power plants by using renewable gas to provide energy during peak periods.

By Gaz Réseau Distribution France

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Thursday, 21 February 2019

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