Skip to content
All posts

Kier onsite cabins reduce energy use by 59%

The m.e Platform has been installed in two onsite portable cabins in Wales with Kier, as featured on the BBC News.

The installation completed by on-site electricians was a simple swap out of the existing plug sockets. The m.e Power Sockets were then configured to connect to local Wi-Fi and ready for use.

kier-group-logo cropped


Measurable results

After baselining the energy use and carbon intensity,'s innovative technology automatically reduced site office cabin energy consumption by 59% during autumn/winter and greenhouse gas emissions by 40%. Over the course of a full year m.e automatically measured and then eliminated: 

Kier Swansea Uni - ROI table 1-1

The m.e Platform enables cost-effective quick wins in decarbonising construction operations. When cabins are powered by diesel generators the savings in both emissions and diesel costs are significantly higher. Depending on the model of the generator the CO2e avoided is approximately 3.8 tonnes per year and the energy cost reduction is at minimum £3k per year.

Iain Casson, Head of Sustainability at Kier said: " have piloted their power sockets and energy management service with one of our projects and the results are very exciting. We are keen to explore the wider applications of their service both for our own energy use behaviours and for what we can offer to our clients."

Local weather API

A custom weather dependant control was also established to automate the dehumidifier based on the current weather. The system pulls data from the closest Met Office weather station and automatically turns off the socket when it has been dry for 4 hours. It then turns it back on after 1 hour of heavy rain or 3 hours of light rain. This alone saved 208kg of CO2e in a year from just one device.

Further savings

The system provided risk mitigation across the two cabins by detecting power anomalies as well as faulty devices. During the installation, a faulty heater was identified through the live data and unplugged before causing serious damage or fire risk.

Kier Swansea Uni - ROI table 2
In addition, savings that would eliminate a further 10-25% (£722 – 30p/kWh or £1,589 on a diesel generator) have been identified by the system by running rulesets at weekends and site shutdown periods. An additional £882 saving would be had from using Demand Side Response just 10% of the time. This would mean there are a further £2,471 of savings available to be had on this installation.