The Challenge

Planetary Hydrogen sought funding to develop a prototype scale ocean-based carbon dioxide removal (CDR) facility in the UK through the Greenhouse Gas Removal (GGR) competition launched by the Department for Business, Energy & Industrial Strategy (BEIS) last August. The competition was part of the UK Government’s programme to support the development of GGR technologies towards commercialisation, funded by the £100 million of new research and development funding announced by the Prime Minister in June 2020.

The challenge was to understand the UK regulatory environment, particularly around discharges to seawater, to identify suitable sites for the construction of the facility, to develop a concept of how the marine facilities will work with already designed onshore facilities within a spatially and environmentally constrained site, and in doing so to provide a quantifiable estimate of build costs. The objective of this process is to make progress towards a fully operational prototype in the UK, ensuring its success by increasing the level of certainty and reducing the risk areas associated with the project.
 

Royal HaskoningDHV activities

Royal HaskoningDHV supported Planetary Hydrogen in pre-submission of the BEIS application, and upon successful award of funding were commissioned by Planetary Hydrogen to carry out an initial dilution analysis and identify specific coastal sites in the south of the UK where hydroxide could be produced and safely discharged (in line with relevant Environmental Quality Standards) into the sea as part of their hydrogen production and CDR process. When discharged, the hydroxide makes a minor modification to the alkalinity of seawater where it actively binds with carbon dioxide, ultimately producing an “ocean antacid” which stores carbon dioxide and helps to counter the local effects of ocean acidification.

As the process involves discharge into the marine environment, Planetary Hydrogen also sought support from Royal HaskoningDHV to outline the marine consenting requirements and processes required for the installation of the seawater intake and outfall pipelines that will abstract seawater and convey the hydroxide discharge to the discharge/diffuser location offshore.

For the next phase, Planetary Hydrogen has identified a potential site in the UK and Royal HaskoningDHV are developing a concept design for a marine works that reflects the known constraints and provides a cost estimate for the these works as part of the overall GGR pilot scheme.
  • Client
    Planetary Hydrogen
  • Location
    UK
  • Period
    2021