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2 min read

23% CO2 eliminated in 4 Months

23% CO2 eliminated in 4 Months

We spoke with Alexis Massey, Group Sustainability Manager at the Wernick Group, to discover how they eliminated 23% of their CO2 emissions in just four months.

Introducing the Wernick Group

We’re a family-owned business established in 1934, and provide permanent and temporary modular buildings, site accommodation and off-grid power solutions across the UK.

We recognise the climate emergency and our role to play within it, we have an ambitious target to reach net zero by 2040. A big part of this involves reducing our carbon emissions, and those of our suppliers and customers.

Wernick group head office.

Plugging our energy leak

We recently built a sustainable head office in Wickford, integrating the technologies that we use within our modular buildings, including wall cladding, solar panels and LED lighting.

Despite having an ‘A’ EPC rating, we were still using around 20-30% more energy than expected and creating unnecessary CO2 emissions, especially on weekends when the site was unoccupied. Looking into this, we discovered monitors, laptops, chargers, and other devices were being left on outside of working hours.

So, we were keen to find an easy retrofit solution that would allow us to automatically eliminate this small power waste, without relying on our team to manually turn devices off.

Automating the process

When we came across the system, the machine learning stood out, especially the recommended rulesets – there’s nothing out there like it! The ability to switch equipment off and on was exactly what we were looking for and much more reliable than somebody on site doing it.

There was also the bonus of the LED light showing the carbon intensity of electricity being used – a great way to show our staff and clients exactly how we’re reducing our emissions!

The inside of Wernick group head office.

“If you’re committed to achieving net zero,’s system is a dedicated tool to measure, identify, reduce emissions and prove that.”

Keeping our operation running

A key objective for us was to implement the system without affecting our day-to-day operations, minimising disruption to our 120 staff. So, our in-house electricians installed our sockets over the weekend when the site was unoccupied.

When the team came back in on Monday morning, everything was working as normal – and critically, our back office was functioning perfectly. The whole transition was very smooth and went by without anybody noticing – a huge win for us and our business continuity.

Measuring our energy waste

We spent the first couple of weeks baselining, to confirm how much energy we were using and the amount of carbon emissions we were generating. The results spoke volumes: we were using 20% more energy than expected during non-working hours.

Seeing a return on investment

After baselining, we implemented rulesets to turn off all devices from 6pm to 7am on weekdays, and always on weekends.

In just four months, we’ve achieved a:


reduction in energy use


reduction in CO2 emissions

Most importantly, the system has allowed us to evidence our reduction in carbon emissions and to keep these to minimum levels.

Spurred on for the future

We’ve been so impressed with the sockets that we’re installing them within selected hire cabins, passing savings directly onto our customers. As with most modular buildings, there are a lot of fused spurs, so we’ve been working with the team to get these developed and added to their product range. We can’t wait to get our hands on them!

We also have plans to invest time educating our staff about the carbon intensity of the electricity they’re using, to promote behavioural change and reduce our emissions even further.

Inside Wernick boardroom.

“You can design a super energy-efficient building but there will always be waste due to human behaviour, something’s system targets.”

My advice

Each building and project are unique, so you need to do research to find the solution that works for you.

Be sure to work out your feasibility around carbon, cost and usability. For us, Wickford was the best site in terms of return on investment, so consider what will help you achieve the biggest payback in the shortest amount of time.

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