Variable Blends Operational
Abstract
Blending hydrogen and natural gas into the NTS has some clear benefits for supporting the transition of the energy industry in the UK to net zero in 2050 and is seen as an important intermediary step towards that goal.
It is expected that initially a low percentage hydrogen blend will be accepted onto the National Transmission System with this potentially increasing up to 20% hydrogen blends being accepted. However, whether a hydrogen producer has to put in a specific blend percentage has not been determined and is unlikely. Therefore, NGT need to develop the system to be able to effectively manage variable blends in addition to 2%, 5% and 20% hydrogen blends.
This project will look into 4 key areas that might be directly impacted by hydrogen blend variability and require impact and risk assessments followed by investigations resulting in solution mapping and mitigation strategies being proposed. The key topics include, establishing permissible limits for variability, investigating how to manage interconnection from NTS to other countries, understanding the effects of variability on stratification potential in the network and investigating the effects of variability on combustor/compression modelling.
