Apr 2017
Gas Distribution
H21 – Alternative hydrogen production and Network storage technologies
NIA_NGN_206
Complete
Apr 2017
Feb 2019
Northern Gas Networks and Cadent
NGN - Dan Sadler, NGGD - Lorna Millinton
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Network Innovation Allowance
GD - Future of gas
Gas Distribution Networks
£374,000.00
The study will consider three scenarios which will be used for design purposes for an alternative low carbon hydrogen production system utilising ATR/Ammonia and CCS and the associated impacts on the UK gas networks system for large scale roll out.

Scenario 1: 1 x Leeds approximately 1 GW hydrogen (average annual production 678MW) and 1.5 million tonnes of CO2 per year developed in 2025.

Scenario 2: 10 x Leeds approximately 10 GW hydrogen and 15 million tonnes of CO2 per year developed between 2025-2035 @ 1 GW additional hydrogen production generation per annum and 1.5 million tonnes additional CO2 sequestration requirements per year.

Scenario 3: 50 x Leeds approximately 50 GW hydrogen and 75 million tonnes CO2 per year developed between 2025-2045 @ 2.5 GW additional hydrogen production generation per annum and 3.75 million tonnes of additional CO2 sequestration per year.

The study will also be used to support the H21 – Strategic modelling – Major Urban Areas NIA which is due to be registered in April 2017.

The project scope has been developed to deliver the following objectives;

  1. Hydrogen Production - Enhance the technical knowledge database for the utilisation of Auto Thermal Reformation as an alternative method to Steam Methane Reforming for hydrogen production, including an economic assessment of the relative Capex and Opex costs. This will address part of Work Package 16 in the H21 roadmap and inform the UK gas sector on the potential impacts of this technology on the gas distribution network future configuration, operations and regulatory implications.
  2. Ammonia for Hydrogen Storage – Establish the technical and economic feasibility of utilising ammonia as a viable technology for the storage and transportation of hydrogen. This will address an element of Work Package 16 in the H21 roadmap. It is critical in understanding how intraday and inter-seasonal storage could be addressed in the UK distribution networks
  3. CO2 Sequestration – Establish a technical and economic model for CO2 sequestration from hydrogen production utilising existing Statoil assets and infrastructure. This will address an element of Work Package 12 in the H21 roadmap. Understanding the economic and technical options for CO2 sequestration from hydrogen production is a critical component of the hydrogen supply chain and is imperative in demonstrating the overall viability of converting the UK gas grid to hydrogen. The H21 project assumes the development of associated CCS infrastructure to align with the anticipated H21 UK roll out programme.This project will provide a technical and economic model, based on hydrogen production base load to ascertain the economic viability of bespoke CCS infrastructure to support the hydrogen conversion programme. Furthermore it will consider the opportunities for the UK offshore asset redeployment to ensure minimal costs and therefore minimize the impact in UK gas customer’s bills.
  4. Power Generation from Hydrogen - Provide a technical assessment of the feasibility and costs of converting existing CCGT power generation to hydrogen. The retrofit of existing CCGT power generation plants and the potential for new power generation from hydrogen has the potential to substantially decarbonise the UK power generation sector. Understanding the impact on future hydrogen demand and the impact on the future network configuration, network operations and hydrogen storage requirements is essential in modeling the hydrogen supply chain to ensure the optimum solutions are identified and adopted..

In considering the success of the project we would consider the following success criteria as a minimum output from the project;

  1. Provide an assessment of the technical and economic opportunities for hydrogen production utilising Auto Thermal Reformation, ammonia storage and CCS deployment rates to allow an assessment of the relative merits of ATR vs. SMR hydrogen production in the context of the three identified scenarios

  2. Provide an assessment of the technical and economic opportunities for hydrogen in ammonia transport and storage, to allow an assessment of the relative merits of hydrogen in ammonia vs. salt cavity storage in the context of the three identified scenarios

  3. Provide a technical assessment of the feasibility and costs of converting existing CCGT power generation to hydrogen.

  4. Provide a feasibility report, including a high level economic assessment for CO2 storage options against the three identified scenarios utilising existing Statoil pipelines and storage infrastructure.

  5. Understand the technical impact of this system on the UK gas network including transmission and distribution networks

  6. Provide critical rates of conversion data for 1, 10 and 50 ‘Leeds equivalents’ to inform the H21 – Strategic modelling – Major Urban Areas NIA which is due to be registered in April 2017.