S.I. 426 Energy Audit (Ireland)

Ensure Compliance. Reduce Energy Costs. Strengthen Sustainability.

At Celtic Dynamics, our S.I. 426 Energy Audits are designed to help organisations meet their legal obligations under Irish energy efficiency regulations while uncovering significant opportunities to reduce energy consumption and save up to 30% on energy costs.

S.I. 426 compliance is not just a regulatory requirement; it is an opportunity to improve operational performance, reduce risk, and demonstrate leadership in sustainability. Our expert-led audits provide a clear, practical roadmap to compliance and measurable savings.

Failure to comply with Ireland’s S.I. No. 426, result in fines, potential personal liability for company officers and reputational damage.

Book a FREE consultation call today!

What Is an S.I. 426 Energy Audit?

An S.I. 426 Energy Audit is a mandatory, in-depth assessment of an organisation’s energy usage, required for qualifying organisations under Statutory Instrument No. 426 of 2014 (as amended).

The audit evaluates how energy is consumed across your facility – including buildings, processes, systems, and equipment – and identifies cost-effective measures to improve energy efficiency. It also ensures your organisation meets all documentation and reporting requirements under the regulation.

Who Needs to Comply with S.I. 426?

Your organisation may be required to carry out an S.I. 426 Energy Audit if it meets the definition of a Large Enterprise or falls within the scope of the regulation.

This typically includes organisations that:

Employ 250 or more people, or
Have an annual turnover exceeding €50 million, or
Have a balance sheet total exceeding €43 million

Public sector bodies and certain non-SME organisations may also be required to comply.

If you are unsure about your eligibility or obligations, Celtic Dynamics can assess your status as part of a free initial consultation.

Our S.I. 426 Audit Process

Assessment

Our energy specialists work closely with your onsite and management teams to collect detailed technical and operational data. This includes site visits, energy data analysis, interviews with key personnel, and a full review of energy-consuming assets and processes.

This step ensures a complete and accurate understanding of how energy is used across your organisation.

Report

We provide a comprehensive S.I. 426–compliant audit report that includes:

A detailed breakdown of current energy consumption
Identification of inefficiencies and energy waste
Benchmarking and performance analysis
Clear documentation to meet regulatory requirements

The report forms the foundation for informed, strategic decision-making.

Solutions

Celtic Dynamics develops a tailored action plan outlining:

Recommended energy efficiency measures
Estimated energy and cost savings
Capital cost estimates
Payback periods and prioritisation
Available grants and funding supports (where applicable)

Where required, we also provide detailed design engineering and fixed-price quotations to support implementation.

Why an S.I. 426 Energy Audit Is Essential

An S.I. 426 audit is about more than compliance, it is a strategic business tool.

Our audits help organisations:

Meet legal and regulatory obligations
Reduce energy costs and operational risk
Identify quick wins and long-term savings
Improve ESG and sustainability performance
Prepare for future regulatory requirements

With rising energy prices and increasing scrutiny on environmental performance, proactive energy management is now a business necessity.

Why Choose Celtic Dynamics?

Proven expertise in regulatory energy audits
SEAI-aligned methodology and best practices
Practical, implementable recommendations
End-to-end support from compliance to solutions
Clear, commercial focus on cost savings and ROI

We don’t just audit..we help you act.

CEO

Dylan Walsh

Take the First Step Toward Compliance and Savings

Free Consultation Call

< BACK TO SERVICES