Are meter data gaps damaging your bottom line?
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Unmetered
The UK’s Definitive Unmetered Specialist
We manage 80% of Great Britain’s unmetered electricity. From street lighting to EV charging, IMSERV is the definitive unmetered supply (UMS) specialist.
Having acquired Power Data Associates (PDA) in 2023, we are proud to provide the tools to manage unmetered supplies efficiently and intelligently. Costs, compliance and carbon can be controlled just as easily as for metered energy.
Solutions
Your Unmetered Challenge, Solved
UMS is used for equipment like telecom cabinets, traffic signals, CCTV and more – essentially, whenever installing a meter isn’t practical. Since usage is estimated, it must be accurate. And this can’t be guesswork; it’s backed by law. The Unmetered Supplies Operator (UMSO) is the role that enforces these rules. We make sure your relationship with the UMSO stays accurate and compliant, taking care of essentials like connection agreements, inventory management and UMS Certificates.
Unrivalled Unmetered Energy Services
Our unmetered expertise is built on trust – take a look at our track record.
of Great Britain’s unmetered electricity consumption calculated
years of combined expertise in our unmetered team
UK’s leading provider of unmetered supply services
years as an accredited agent
80
of Great Britain’s unmetered electricity consumption calculated
100
years of combined expertise in our unmetered team
1
UK’s leading provider of unmetered supply services
30
years as an accredited agent
What sets us apart
Absolute Authority
We manage 80% of Great Britain’s unmetered electricity, acting as the trusted authority for this market.
Full Lifecycle Consultancy
Our strategic consultancy supports the entire lifecycle of unmetered supply, including inventory validation, energy forecasting and regulatory guidance.
Over 100 Years of Unmetered Expertise
Our specialist team brings over 100 years of combined experience to eliminate complexity and guarantee professionalism across every partnership.
Futureproofing Your Data
We ensure seamless, friction-free data integration while guiding your organisation through critical reforms, like the Market-wide Half Hourly Settlement (MHHS) transition.
What sets us apart
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Astral is the intelligence layer behind it all. It brings together your data, alerts, assets and reports, in one secure, enterprise-ready platform.
Read moreOur clients say it best
Proof From The People Who Know
Client Testimonial
“Having a service review meeting with our Power Data Associates Account Manager was one of the most useful meetings I have been to for some time. To say it was a worthwhile meeting is an understatement. Also, the Guidance and Information Notes produced by Power Data Associates are full of useful technical information which contributes to the effectiveness of our unmetered asset management.”
Warwickshire County Council
Client Testimonial
“We needed someone to guide us through the entire process – from working out how many meters, where to locate them, and ensuring they were installed correctly, through to getting the MPAN’s registered. The complexity of what needed to happen could have become overly complicated, but IMSERV’s expert managed the whole process from end to end – including liaising with all the key partners – and the whole thing was delivered seamlessly.”
Nigel Rippon
Head of Capital Projects, University of Sussex
Client Testimonial
“Working with Power Data Associates is great value for money and takes the heavy lifting out of our energy management. Particularly the Monthly Reports they provide, which makes our data analysis SO easy. The team are always available and help sort out any issues we have”
Paul Binks, Asset Manager
Lancashire County Council
Client Testimonial
“Power Data Associates provide us with an incomparable wealth of specialist knowledge, invaluable guidance and assistance in all matters unmetered, their response to our request for DUoS and CRC forecasting calculations were second to none. Considering the consistently accurate data, along with the high quality of service we receive, Power Data Associates are one of our most valued and cost effective service providers.”
Cumbria County Council
Client Testimonial
“Contracting directly with IMSERV, rather than via a supplier, means we have control over when we carry out remedial work or meter exchanges – vital when we operate critical infrastructure – our energy supplier would not be able to deliver that level of flexibility. The direct relationship also means that we have a real understanding of our portfolio, where issues are occurring and where we can better manage our energy use.”
Kayleigh Cornell
Metering Co-Ordinator, Southern Water
Client Testimonial
“Having a service review meeting with our Power Data Associates Account Manager was one of the most useful meetings I have been to for some time. To say it was a worthwhile meeting is an understatement. Also, the Guidance and Information Notes produced by Power Data Associates are full of useful technical information which contributes to the effectiveness of our unmetered asset management.”
Warwickshire County Council
Client Testimonial
“We needed someone to guide us through the entire process – from working out how many meters, where to locate them, and ensuring they were installed correctly, through to getting the MPAN’s registered. The complexity of what needed to happen could have become overly complicated, but IMSERV’s expert managed the whole process from end to end – including liaising with all the key partners – and the whole thing was delivered seamlessly.”
Nigel Rippon
Head of Capital Projects, University of Sussex
Client Testimonial
“Working with Power Data Associates is great value for money and takes the heavy lifting out of our energy management. Particularly the Monthly Reports they provide, which makes our data analysis SO easy. The team are always available and help sort out any issues we have”
Paul Binks, Asset Manager
Lancashire County Council
Client Testimonial
“Power Data Associates provide us with an incomparable wealth of specialist knowledge, invaluable guidance and assistance in all matters unmetered, their response to our request for DUoS and CRC forecasting calculations were second to none. Considering the consistently accurate data, along with the high quality of service we receive, Power Data Associates are one of our most valued and cost effective service providers.”
Cumbria County Council
Client Testimonial
“Contracting directly with IMSERV, rather than via a supplier, means we have control over when we carry out remedial work or meter exchanges – vital when we operate critical infrastructure – our energy supplier would not be able to deliver that level of flexibility. The direct relationship also means that we have a real understanding of our portfolio, where issues are occurring and where we can better manage our energy use.”
