The Anonymous Widower

GeoPura’s Construction World First

On the GeoPura web site there is a case study, which is entitled Construction World First.

These two paragraphs outline what was done.

Working in partnership with Siemens Energy our hydrogen fuel cell system, has provided off grid power and heat to National Grid’s UK Viking Link construction site.

The fuel cell system removes the need for diesel generators and provides innovative, sustainable, low carbon energy to the Viking Link interconnector project site.

The interesting thing, is that the heat that the hydrogen fuel cell gives out is collected and used to heat the remote site.

This last paragraph, explains the need for off grid power.

Off grid power is needed as this site didn’t have a grid connection for at least six to eight months, and the fuel cell system provided enough heat and power for the construction village during that time, removing the need for diesel generators.

There’s more in this Siemens Energy report.


January 15, 2023 Posted by | Energy | , , , , , | Leave a comment

HS2 Smashes Carbon Target

The title of this post, is the same as that of this article on Rail Engineer.

This is a must-read article which explains how the various companies building High Speed Two are progressing in making all of the work sites diesel-free.

GeoPura is mentioned in the article and on this page on GeoPura’s case studies, which is entitled HS2 Reveals Successful Results Of Hydrogen Generator Trial, full details of the trial are given.

An HS2 construction site in London has held successful trials for two zero-emissions hydrogen fuel cell-based electricity generators – cutting carbon and improving air quality for workers and the local community.

The two GeoPura 250kVA hydrogen power units (HPUs) were trialled over the last year at HS2’s Victoria Road Crossover Box in Ealing, as a direct replacement for diesel generators to power machinery on the site.

There is also this video from High Speed Two.


  1. The use of electric cranes, diggers, dump trucks.
  2. The red trailer with lots of small cylinders, which is used to supply hydrogen.
  3. HS2 are also using HVO and flywheels to store energy.
  4. The video is narrated by HS2’s Air Quality Manager. If every project had one of these, it must surely speed decarbonisation.

We need more electric construction.

January 15, 2023 Posted by | Transport/Travel | , , , , , , , | 2 Comments

National Grid Goes Carbon-Free With Hydrogen-Powered Substation Trial

The title of this post, is the same as that of this press release from National Grid.

These are the main bullet points.

  • Hydrogen powered unit (HPU) quietly provided carbon-free electricity to National Grid’s Deeside Centre for Innovation
  • Only emission is water
  • HPUs could save an estimated 500,000 kg of carbon across all National Grid substation sites

I am an Electrical Engineer and I had never realised that all those electricity substations around the country need a backup electricity generator.

These four paragraphs describe the trial and the generator used.

A GeoPura 250kW hydrogen power unit (HPU) contained within a transportable shipping container measuring 7.2 m by 2.5 m was installed at DCI and produced the energy to power low-voltage equipment needed for National Grid’s innovation testing projects and site operations. The trial tested the capabilities and feasibility of HPUs as direct replacements for backup diesel generators across more than 250 National Grid substation sites, the data will now be analysed and shared later this year.

National Grid currently use diesel generators alongside batteries to provide backup power to a substation for key activities such as cooling fans, pumps, and lighting, enabling it to continue to perform its crucial role in the electricity transmission system.

These backup generators are rarely used and have less than a 1% chance of operating per year, however, on the rare occasion that backup power is required, changing from diesel to low-carbon emission alternatives have the potential to reduce carbon intensity by 90%* and save over 500,000 kg of carbon emissions.

The HPU at Deeside has power capabilities of up to 100 kW in continuous operation mode and up to 250 kW for 45 minutes and uses 100% green hydrogen. The unit is quieter and the hydrogen cannisters used to fuel the generators can be safely stored on site.

I have some thoughts.

Deeside Centre For Innovation

The Deeside Centre for Innovation (DCI), a state-of-the-art testing facility hosting a 400 kV modified substation, designed as a unique environment for development and trial of innovative technologies and practices.

I think there’s something rather cunning about the DCI, as it means that anybody with a good idea will probably approach National Grid for help with the testing.

Visit Deeside Centre for Innovation for more information.


GeoPura has a totally zero-emissions answer to how we’re going to generate, store and distribute the vast amount of energy required to decarbonise our global economies. Or so their web site says!

This page on GeoPura’s web site, gives several case studies of how they work.

They would appear to provide zero-carbon power in widespread locations for Winterwatch, Springwatch etc. for the BBC.

January 13, 2023 Posted by | Energy, Hydrogen | , , , , , | 2 Comments