Reduction of carbon emission on jobsite: Promising trial of electric drilling rig BAUER eBG 33 on HS2 project

• Results show the BAUER eBG 33 cuts more than 1,200 kg of CO2 per day and reduces noise by up to 50%
• Wider roll-out of electrification will bring major environmental benefits for HS2 and the UK construction sector

Warwickshire, UK – HS2 is Britain’s new high speed rail line being built from London to the North-West, with HS2 trains linking the biggest cities in Scotland with Manchester, Birmingham and London. HS2 is one of the largest infrastructure projects in Europe and it is being built to the highest standards, using world-class engineering to protect the countryside, protect local communities, and cut carbon.

HS2 Ltd’s construction partner, Balfour Beatty VINCI Joint Venture (BBV) is currently trialling the world’s first all-electric, high-capacity Bauer drilling rig on a construction site in Warwickshire, as the Joint Venture steps up its plans to meet HS2 Ltd’s ambition for diesel-free construction sites.

Andrea Davidson, HS2’s Air Quality Manager said: “We are proud to be working with our supply chain and leading manufacturers to drive a step change in the UK construction industry, demonstrating the viability and benefits of emissions-free heavy electric plant. Being at the forefront of a ground-breaking trial like this is another step on our journey to achieving our target of all diesel-free construction sites by 2029, and net zero carbon from 2035 – helping HS2 to become the most sustainable infrastructure project ever delivered.”

First results of the trialling show: The 100 t BAUER eBG 33 drilling rig creates an overall reduction of 1,292 kg CO2 per day compared to a traditionally powered rig. At the same time it reduces noise by up to 50%. In terms of performance, the rig is able to carry out exactly the same tasks as traditional machines.

This innovative new machine is being used by BBV’s deep foundations contractor SB3, a Joint Venture between Bachy Soletanche & Balfour Beatty Ground Engineering, and works alongside a diesel-powered rig to construct large diameter piles, with the aim of demonstrating that heavy, electric powered construction equipment can perform as traditional machines.

Dan Fawcett, Innovation Director at BBV commented: “We’re committed to driving real innovation across everything we do. That’s why we’re so excited to trial the world’s first all-electric, high-capacity drilling rig at one of our HS2 sites in Warwickshire. This pioneering project marks a major step forward towards transitioning to all-electric powered plants, which is great news for the protection of the environment. We’ll look to share what we learn from this trial and extend it across our other sites, as well as the wider industry.”

Tim Laemmle from BAUER Maschinen GmbH, the rig’s developer and manufacturer, emphasized: “It is great to be working with HS2, BBV and SB3, as the first UK specialist contractor to demonstrate the capabilities of the product. We’re fully committed to bringing emission-free equipment to the deep foundation sector. There is a strong desire to promote our new electrified equipment as a genuine, reliable alternative to fossil fuel driven machinery.”

Chris Merridew, SB3 JV Board Director, added: “Our team was eager to support Bauer as the first end user of the electric rig and its new technology. It has the potential to be a massive game changer for the industry and the wider construction sector in our continued drive to reduce carbon, noise and emissions.”

And last but not least, the operator mentioned that there is hardly any noise to be heard in the cabin and the eBG can be operated just like a traditional machine. The cable is not noticeable and the guide arm just follows the machine.

The BAUER eBG 33 replaces the diesel engine drive with a powerful electric drive. The environmental benefits include reduced exhaust and noise emissions; high energy efficiency due to modern three-phase asynchronous motor; and flexibility through an integrated frequency converter. Currently, Bauer is also trialling different e-connection types and an innovative concept for set-up operation via an autonomous secondary drive which is independent of the power supply.