Unmetered

IMSERV PDA is the UK’s leading provider of unmetered supply services.

From street lighting and traffic signals to telecoms and EV charging infrastructure, we deliver expert Meter Administration and consultancy that helps you control costs, stay compliant, and streamline operations.

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Solutions

From data to decisions

Trusted by local authorities, energy suppliers, and infrastructure providers, we calculate over 80% of Great Britain’s unmetered electricity consumption—because precision matters.

Data that
pays for itself

What smarter data actually delivers.

%

Reduction in Missed Reads

£
k

of UK electricity data tracked

%

Top UK suppliers choose US

%

Audit-read Carbon Data

25
%

Reduction in Missed Reads

£
500
k

of UK electricity data tracked

60
%

Top UK suppliers choose US

100
%

Audit-read Carbon Data

What sets us apart

Market-Leading Coverage

– IMSERV calculates approximately 80% of Great Britain’s unmetered electricity consumption, making us the most trusted name in the sector

Specialist Meter Administration

– we offer expert Meter Administrator services for Half-Hourly Unmetered Supplies (HHUMS), ensuring accurate data flows and full compliance with industry standards

End-to-End Consultancy

From street lighting to EV charge points, our consultancy services support every stage of unmetered supply management — including inventory validation, energy forecasting, and regulatory guidance.

Seamless Integration

Feed clean, validated data straight into your platforms, with zero friction.

THE Unmetered experts

– our unmetered team has over 100 years of combined experience in the complexities of unmetered supply – we’re the industry experts

Trusted by Local Authorities & Energy Suppliers

Our long-standing relationships with councils, infrastructure providers, and energy suppliers demonstrate our reputation for professionalism, reliability, and results

MHHS Transition Expertise

With the upcoming Market-Wide Half-Hourly Settlement (MHHS) reform, our experts have the experience to guide clients through the transition, thanks to our deep technical and regulatory knowledge

What sets us apart

Market-Leading Coverage

– IMSERV calculates approximately 80% of Great Britain’s unmetered electricity consumption, making us the most trusted name in the sector

Specialist Meter Administration

– we offer expert Meter Administrator services for Half-Hourly Unmetered Supplies (HHUMS), ensuring accurate data flows and full compliance with industry standards

End-to-End Consultancy

From street lighting to EV charge points, our consultancy services support every stage of unmetered supply management — including inventory validation, energy forecasting, and regulatory guidance.

Seamless Integration

Feed clean, validated data straight into your platforms, with zero friction.

THE Unmetered experts

– our unmetered team has over 100 years of combined experience in the complexities of unmetered supply – we’re the industry experts

Trusted by Local Authorities & Energy Suppliers

Our long-standing relationships with councils, infrastructure providers, and energy suppliers demonstrate our reputation for professionalism, reliability, and results

MHHS Transition Expertise

With the upcoming Market-Wide Half-Hourly Settlement (MHHS) reform, our experts have the experience to guide clients through the transition, thanks to our deep technical and regulatory knowledge

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IMSERV Astral

Astral is the intelligence layer behind it all. It brings together your data, alerts, assets, and reports – in one secure, enterprise-ready platform built for action.

Read more

Our clients say it best

Proof from the people who know

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”

Lancashire County Council

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

“IMSERV enables us to manage our reconciliations and bills more easily, and their proactive approach means we can maintain the right level of data accuracy. We are also always looking to new innovations and technologies to help us reduce our energy use, reduce our carbon intensity and drive greater sustainability across our estate – IMSERV work closely with us to deliver the service we need.”

Neil Coleman
Energy Engineering and Innovation Manager, John Lewis Partnership

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

“We saved a substantial amount of Public funds in the first month of their advice being implemented, Power Data Associates performance is only ever one of ‘Quality and Excellence’. To state that they were a good investment would be an understatement, they are a must for any forward-thinking business.”

Birmingham City Council

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”

Lancashire County Council

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

“IMSERV enables us to manage our reconciliations and bills more easily, and their proactive approach means we can maintain the right level of data accuracy. We are also always looking to new innovations and technologies to help us reduce our energy use, reduce our carbon intensity and drive greater sustainability across our estate – IMSERV work closely with us to deliver the service we need.”

Neil Coleman
Energy Engineering and Innovation Manager, John Lewis Partnership

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

“We saved a substantial amount of Public funds in the first month of their advice being implemented, Power Data Associates performance is only ever one of ‘Quality and Excellence’. To state that they were a good investment would be an understatement, they are a must for any forward-thinking business.”

Birmingham City Council

Make smarter energy decisions, faster.

Let’s talk about how IMSERV can keep your energy data sharp and your complex sites compliant.

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