100% Guaranteed Compliance with ESOS Phase 4
- Guaranteed ESOS compliance with 5,000+ successful reports.
- AI-powered reporting platform that saves months of manual work.
- End-to-end services: audits, lead assessor sign-off, reporting.
- Turn ESOS from compliance burden into cost-saving energy strategy.
- Pricing plans: flexible, transparent pricing tailored to organisations of all sizes.
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ESOS Phase 4
Do you need to comply with ESOS Phase 4?
If your organisation meets the ESOS qualification criteria, compliance is a legal requirement. ESOS applies to large UK organisations and requires the completion and submission of an ESOS assessment every four years.
Not complying with ESOS can result in fines of up to £90,000.
ESOS Phase 4 is now underway. It is very important to confirm your status early and plan ahead of the compliance deadline of 5 December 2027 in order to avoid enforcement action and potential financial penalities.
Easy ESOS compliance
Ensuring ESOS compliance in line with the increasingly complex legislation eats into your valuable time – time better spent on core activities.
Enistic has helped some of the best-known brands and largest companies in the world comply with ESOS regulations. We have the expertise and know-how to successfully guide you through the process.
Dedicated platform module for ESOS Action Plans (EAPs) built specifically to meet the UK Government requirements. Our carbon accounting platform will help you streamline ESOS and EAP reporting, making the process pain-free.
100% guaranteed compliance
At Enistic, we have produced over 4,000 reports since 2002 and our clients have never failed compliance. That’s why we guarantee compliance for ESOS and ESOS Action Plans (EAPs).
AI-enabled platform
We have trained our AI to help you draft your report, saving you months of time compared to manual drafting. With built-in workflows in our platform we ensure comprehensive coverage of all ESOS reporting requirements. Just tick off the tasks as you complete them.
In-house auditors
Enistic offers a full ESOS service with first-class physical audits performed by our in-house auditors, and unlimited access to our ESOS Lead Assessors. Our team can support you at any time should you need help.
Download our free ESOS guide and example here
What do I need to do?
If your organisation needs to comply with ESOS, the process can feel complex and time-consuming. You will need to calculate your total energy consumption, complete a complaint ESOS assessment across buildings, transport, and industrial activies, and submit a fully appoved report to the Environment Agency by 5 December 2027.
Enistic takes the pressure off. We have produced over 5,000 reports since 2002 and non of our clients have ever failed compliance. Our experts and AI technology handle the heavy lifitng, from data collection and analysis, to audit delivery and final submission. We make ESOS Phase 4 straightforward, stress-free, and fully compliant.
Easy ESOS with Enistic
ESOS doesn’t need to be complicated. With Enistic, compliance is seamless, and fully taken care of. We manage your ESOS Phase 4 assessment from start to finish, calculating your energy use, delivering compliant audits, and preparing eveyrthing needed for submission well-ahead of the deadline.
Our team of experts, supported by our powerful AI technology, do the hard work for you. No data gaps. No uncertainty. Just clear insights, full complaince, and a smooth ESOS journey you can trust.
We have produced over 5,000 reports since 2002 and our clients have never failed compliance. That’s why we guarantee compliance for ESOS and ESOS Action Plans (EAPs).
The UK Market Leader in ESOS Compliance
Expert Support, Zero Uncertainty
Our team of lead assessors, auditors and ESOS experts are some of the most qualified in the country, they know exactly what to do, and they are quick and accurate.
100% Guaranteed Compliance
We are so confident in what we do, that we guarantee ESOS compliance to every single one of our customers. Talk to our team today and avoid the risk of being fined!
Testimonials
Who qualifies for ESOS Phase 4?
ESOS Phase 4 applies to large UK organisations. You will need to comply if your organisation meets any of the following criteria:
- Have over 250 employees.
- Annual turnover in execss of £44 million and an annual balance sheet total in excess of over £38 million.
- Part of a larger organisation that falls into either of these categories.
Frequently asked questions – ESOS and EAPs
When do I need to submit my ESOS report?
The deadline for ESOS Phase 3 compliance was 5th August 2024. If you didn’t submit your report and you are required to do it now, please call us ASAP. Our in-house ESOS Lead Assessor can help you.
The deadline for ESOS Phase 4 compliance is 5th December 2027.
What happens if I don't comply with ESOS?
If you don’t comply with ESOS you will be at risk of being fined. You will be charged a fixed penalty of £5,000 plus an additional £500 per day until you submit your ESOS report. As ESOS is a public report, not complying with it could also damage your reputation.
Will ESOS Phase 4 include more information?
It is expected that you will need to include more information about your carbon emissions on ESOS Phase 4 (e.g. a wider analysis of your Carbon Footprint, a Carbon Reduction Plan, and Net Zero assessments).
Do I need an ESOS Lead Assessor?
Yes, to legally comply with ESOS you need a qualified ESOS Lead Assessor to sign your report.
What happens if I don't have all the data for ESOS?
It can be complicated to get all the data required for ESOS, but it is a legal requirement that you get it. Here’re some things you can try:
- Checking with finance teams for invoices.
- Contacting the utility provider for usage details or online portal access.
- Requesting an FTP data download if necessary.
Frequently asked questions - Enistic
Who are you?
We are Enistic Limited, based in Oxford, UK. We are 17 passionate people who, since 2002, have been producing carbon accounting software to help businesses reduce their carbon footprint and adopt more sustainable business practices. We focus on helping larger companies comply with different sustainability reporting requirements and fight climate change. We are stable, profitable, and growing.
Most of the clients we deal with are still with us almost a decade after they started using us, so we must be doing something right!
Does your system handle Scope 3?
Yes. Enistic handles all Scope 1, Scope 2, and Scope 3 sections of the Greenhouse Gas Protocol (“GHG Protocol”).
Can I generate legally compliant reports from the Enistic system?
Yes. We have produced and filed over 4,000 fully compliant legal reports. The system is tried and tested and 3 of the Big 4 accountancies have audited the reports over the past few years.
What standards does the Enistic software comply with?
The Enistic software is heavily standards based and complies with most standards that you will need in day to day use. This includes: ESRD, ISSB, IFRS S2, CSRD, ESOS, SECR, Science-Based Targets, GHG Corporate Accounting Standard, PPN 06/21, GHG Corporate Accounting Standard Including Value Chain, ISO15804, ISO1404, ISO20121, BS:EN 16274, and ISO5002.
Is the system available in languages other than English?
The Enistic software is available in English, French, German, Italian, Spanish, and Simplified Chinese. If you need another language, please contact us to discuss.
How many factors are built into the system?
Enistic maintain a large database of UK and EU government approved conversion factors. There are over 40,000 factors built in, including in the software that cover fuel types, vehicle types, energy types, product composition, raw materials, and company annual emissions. Factors are updated promptly if annual updates are issued by the relevant authorities.
Are you on Social Media and/or any other channels?
Yes, we have a long running YouTube channel aimed at sustainability professionals called the Carbon College. You can also find us on LinkedIn.
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Talk to our team to:
- Explore how Enistic is effectively used by companies to track, analyse, and report their carbon emissions.
- Discover seamless methods for data gathering and integrating Enistic into your team's daily workflow with minimal disruption.
- Seek custom solutions and receive tailored support.
- Explore pricing options suitable for your company and your needs.

