Display Energy Certificates

Ensure compliance, reduce energy costs, and minimise your carbon footprint

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A compliance partner you can trust

Gain clarity, control and savings

Stay compliant with Zenergi

Don’t fall behind and stay compliant with Display Energy Certificate (DEC) regulations while uncovering opportunities to reduce energy costs and carbon emissions. Our comprehensive service delivers actionable insights to improve efficiency and supports your sustainability goals.

Meet legal requirements by displaying a valid certificate and holding a Recommendation Report.

Get expert recommendations to improve your building’s energy performance.

We issue 10% of all UK Display Energy Certificates—proven, reliable, and hassle-free.

Understand your energy usage and take action to reduce waste, lower bills, and shrink your environmental impact.

20+
years of industry experience
3,000
Multi-academy trusts
3,000

tCO2e

Multi-academy trusts
Get started today

Trusted by businesses to make an impact

Case study

Helping Shropshire Council improve energy efficiency and stay compliant

For over a decade, Zenergi has helped Shropshire Council meet energy compliance requirements while uncovering opportunities to reduce energy waste. A thermography inspection at Shrewsbury Museum and Art Gallery identified major heat loss areas, including the front door, single glazed windows, and plant room valves. With this insight, the Council can now prioritise targeted energy-saving investments to support its goal of becoming carbon net-neutral by 2030.

What they thought
We have a streamlined service with Zenergi to allow us to maintain a rolling DEC programme across our schools and buildings, keeping it simple, to keep costs down. In addition to the provision of our DECs, having the support of Zenergi for projects such as the identification of heat loss in our buildings is very valuable and is helping us in the achievement of our net zero ambitions."
Cameron LeGallia-Pound Energy Officer | Shropshire Council

How we work

01
Understand your building's energy usage
We analyse your energy consumption and assess compliance with Display Energy Certificate (DEC) regulations.
02
Deliver actionable insights
You’ll receive a detailed DEC and Recommendation Report outlining your building’s energy efficiency rating and practical steps to improve it.
03
Support your compliance journey
From submitting your DEC to implementing recommendations, we provide ongoing support to help reduce costs and emissions.
Get started today

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Find out more

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Take control of your energy costs with support to choose the supplier, the contract length, and type of contract that supports both your energy needs and budget.

Find out more

P442 Licence Exempt Supply

Lower electricity costs by accessing half-hourly matched renewable power from approved independent generators

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Dynamic Marketplace

Get the best value from your energy supply contracts and stay ahead in a rapidly changing market

Find out more

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Take control of your energy costs with support to choose the supplier, the contract length, and type of contract that supports both your energy needs and budget.

Find out more

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Our water service helps to ensure you are not paying more than you should for your water and waste services. We can support you through water procurement, providing comparison quotes on a like-for-like basis and can also offer bill validation and benchmarking of your consumption, identifying any potential inefficiencies or leaks.

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Our invoice validation service identifies any possible discrepancies in energy and water bills, ensuring the numbers are based on accurate usage data and the correct rates are being applied. Any discrepancies are queried with suppliers and followed through to resolution, with any incorrect payments returned to customers in full, providing full peace of mind.

Find out more

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Our invoice validation service identifies any possible discrepancies in energy and water bills, ensuring the numbers are based on accurate usage data and the correct rates are being applied. Any discrepancies are queried with suppliers and followed through to resolution, with any incorrect payments returned to customers in full, providing full peace of mind.

Find out more

Zenergi Portal

Powerful data at your fingertips for streamlined energy management

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Our future-proof telecoms solutions simplify business communications. In a world where connectivity is key, our comprehensive offering includes VoIP and communications; managed networks; business mobile; broadband and WiFi. Organisations need solutions that enhance communication, collaboration, and connectivity.

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Frequently asked questions

Display Energy Certificates (DECs) must be renewed annually for buildings with a total useful floor area over 1,000m². For smaller buildings (between 250m² and 1,000m²), the DEC must be renewed every 10 years.

To obtain a Display Energy Certificate (DEC), you need to hire an accredited energy assessor who will evaluate your building’s energy usage and produce the certificate. The assessor will visit your building, gather energy usage data, and calculate your DEC rating before issuing the certificate.

An Energy Performance Certificate (EPC) assesses the energy efficiency of a building based on its construction and services, providing a theoretical energy efficiency rating. A Display Energy Certificate (DEC), on the other hand, is based on the actual energy consumption of the building. EPCs are required when a building is sold or rented, while DECs are required for public buildings.

Your DEC compliance partner

With extensive expertise in energy compliance, we’re your trusted partner in navigating regulatory requirements. Our tailored solutions ensure your building remains compliant, reduces energy consumption, and meets sustainability goals, all while avoiding costly fines.

Get a quote now