cosmOS Energy Monitor Live at Leigh Spinners Mill

Leigh Spinners Mill has stood since 1913. Until now, it had never been able to see where its electricity goes.

That changed in May 2026, with the cosmOS C30 Energy Monitor going live across the building. The mill is a Grade II*-listed former cotton mill, run by the Leigh Building Preservation Trust, the charity that rescued it. Today it houses more than 60 tenants and welcomes around 1,200 visitors each week.

The C30 monitors the building's main incomer and each floor individually, per phase, in realtime. For the first time, the Trust can see which floors draw the most, when demand spikes, and where the biggest savings are likely to sit, rather than inferring all of that from a quarterly bill that arrives long after the usage happened.

Understanding energy usage matters even more for a charity. Every pound the Trust spends on electricity it cannot see, is a pound it cannot direct towards the building or the community it serves. Visibility is the first lever on cost, and cost is what keeps a heritage building of this scale viable.

Just as importantly, the new baseline improves decision quality for everyone involved in day-to-day operations. Instead of discussing energy performance in general terms, facilities teams and trustees can now compare floors and time windows with evidence in front of them, then prioritise the specific interventions most likely to pay back. That could mean adjusting schedules in high-use areas first, validating whether occupancy assumptions are accurate, or identifying where additional metering would create the clearest return.

"This is amazing just what we need, I've been looking at this all weekend. What a fabulous piece of kit, it's already identifying our problem."

Feedback received just a few days after installation.

We deliberately started with monitoring rather than full automation. Energy data is the lowest-disruption place to begin, with typical installs under £1,000. It shows what is actually worth automating before capital is committed. With that baseline established, future modules can be planned against clear evidence instead of assumptions.

There is local symmetry to this that we value. Nemiah works out of Leigh Works on Bradshawgate, and Spinners Mill is only a few minutes away. Both are community-led buildings helping bring activity back to a town that has gone too long without it. Helping the Trust understand one of Leigh's landmark sites is close to the reason we set up here in the first place.

Get in touch if you'd like to see exactly where and when energy is being used in your building.