Mercier and Thom – Beyond Net Zero
Leading the charge in energy efficiency within buildings and construction, we’re proud to have calculated savings exceeding 1 billion kilograms of CO₂, driving real progress in the fight against climate change since 1990.
Your Partner in Energy Efficiency, Carbon Reduction, and Sustainable Construction
Why choose mercier and thom ltd?
At Mercier and Thom Ltd, we go Beyond Net Zero, delivering innovative, measurable solutions to help developers, homeowners, and businesses achieve their sustainability goals. With over two decades of experience and industry-leading expertise, we’ve become a trusted name in energy efficiency, carbon reduction, and building compliance across the UK.
Unmatched Expertise: Decades of experience in energy efficiency, carbon reduction, and sustainable construction.
Regulatory Compliance: All recommendations comply with Building Regulations, including Parts L, O, and G, as well as BREEAM standards.
Proven Results: We’ve helped thousands of clients across the UK achieve measurable energy and carbon savings.
Sustainable Strategies: Our solutions don’t just save energy—they make a meaningful impact on the fight against climate change.
What Sets Us Apart?
Proven Track Record
Over 1 billion kilograms of CO₂ saved, with energy and carbon calculations completed for thousands of residential, commercial, and public buildings.
Comprehensive Expertise
From SAP and SBEM calculations to whole-house retrofits, BREEAM assessments, and water neutrality planning, we cover all aspects of sustainability.
Regulatory Knowledge
Our deep understanding of Building Regulations, including Parts L, O, and G, ensures smooth compliance and successful planning submissions.
Tailored Solutions
We don’t offer one-size-fits-all approaches. Every project benefits from a bespoke strategy designed to meet specific energy, carbon, and water efficiency goals.
Award-Winning Leadership
Led by Robin Thom, an industry-recognised expert in sustainability and energy consultancy, our team is dedicated to delivering exceptional results.
Our Commitment to Sustainability
Sustainability
At Mercier and Thom Ltd, we believe in creating a greener, more sustainable future. Our services are designed to:
- Reduce Carbon Footprints: Through accurate assessments and practical recommendations, we help minimise environmental impact.
- Support Net Zero Goals: Our expertise in renewable energy, embodied carbon reduction, and lifecycle analysis ensures your projects align with Net Zero targets.
- Enhance Energy Efficiency: By optimising energy performance, we improve building sustainability while cutting costs for clients.
- Energy Efficiency Experts: Specialists in SAP, SBEM, EPCs, and BREEAM.
- Carbon Reduction Consultancy: Achieving measurable savings to combat climate change.
- Planning and Compliance: Supporting Part L, O, and G regulations with precision and professionalism.
- Nationwide Reach: Offices in Cambridgeshire and Warwickshire, serving clients across England, Scotland, and Wales.
When you choose Mercier and Thom Ltd, you’re not just meeting compliance requirements—you’re making a lasting impact on the environment. Join us as we go Beyond Net Zero to build a more sustainable world.
We have helped save over 1 billion kilograms of carbon dioxide (CO2)
testimonials
What our customers say
– Communication
– Clarity of requirements
– Value for moneyHonestly with this being my first experience using you guys I haven’t got anything that I would change.
Thank you so much for sending us the EPC Certificate promptly.
We really appreciate it.
On the other hand, I would also like to thank you for your excellent service last and this year.
Having worked alongside Robin for over 12 years, we have built a strong working relationship and received a prompt and efficient service from Design Stage through to Completions across many developments. Their experience within the Energy field is invaluable to us in providing advice and alternative solutions, where required, in order to achieve compliance.
Unbiased Expertise to Deliver the Best Energy-Saving Solutions
How We Help You
At Mercier and Thom Ltd, we understand that navigating the wide range of energy-saving solutions on the market can be overwhelming. With conflicting claims and misleading information about product performance and suitability, making the right choice can feel daunting. That’s where we come in.
We provide a truly unbiased, expert service, offering tailored recommendations for the most effective mix of energy efficiency solutions to suit your home or business. Our approach ensures that every solution is aligned with your unique needs, budget, and sustainability goals.
Personalised Energy Assessments
Using advanced tools like SAP and SBEM, we evaluate the energy performance of your property and identify areas for improvement.
Tailored Solutions
From insulation upgrades and glazing improvements to renewable energy systems like solar PV and heat pumps, we recommend the best combination of products and services for maximum efficiency.
Transparent Budgeting
We provide clear estimates for the cost of each solution, helping you make informed decisions that suit your financial plan.
Return on Investment (ROI)
By calculating estimated payback periods and lifetime savings, we ensure your investment delivers both economic and environmental benefits.
Environmental Impact Analysis
We quantify the carbon savings you can achieve with our recommended solutions, aligning your project with Net Zero Carbon goals.
What We Offer
Our Process
How it works
Comprehensive Assessment
We begin by evaluating your property’s energy performance and identifying key areas for improvement.
Tailored Recommendations
Based on your goals and budget, we suggest a combination of solutions, from retrofitting to renewable energy integration.
Detailed Reporting
You’ll receive a clear plan with cost estimates, expected payback times, and the environmental impact of each measure.
Support Throughout
From planning applications to installation guidance, we’re with you every step of the way.
Whether you’re upgrading an existing property or designing a new development, Mercier and Thom Ltd provides clear, actionable advice to help you achieve significant energy savings, reduce your carbon footprint, and meet Net Zero targets.
Let us guide you to a more energy-efficient and sustainable future.
Tailored Solutions for Professionals and Organisations Across the UK
who we help
At Mercier and Thom Ltd, we support a wide range of individuals and organisations in achieving energy efficiency, carbon reduction, and sustainability goals. Explore how we can help you.
Driving Energy Efficiency and Sustainability Beyond Net Zero
Our services
At Mercier and Thom Ltd, we offer a range of expert services designed to reduce energy consumption, cut carbon emissions, and create sustainable buildings. Here are the six core services we provide.
Residential Energy Assessments – SAP, BREL, and Home Energy Models
Accurate calculations and modelling to ensure compliance with Part L of the Building Regulations, improve energy performance, and support sustainable development for homes.
Non-Domestic Energy and Carbon Assessments – SBEM
Comprehensive energy modelling and BRUKL reports for commercial and public buildings, ensuring compliance with Part L and optimising operational efficiency.
Overheating Risk Assessments – Part O Compliance
Detailed assessments using both simple and dynamic thermal modelling methods to identify and mitigate overheating risks in residential and non-domestic properties.
Whole-House Retrofits and 25% Glazing Rule Compliance
Tailored retrofit solutions for existing homes, helping clients reduce energy consumption and achieve Net Zero Carbon while justifying additional glazing through advanced SAP calculations.
Planning Statements for Sustainable Development
Expert planning support for carbon, energy, water, and sustainable construction, including water neutrality reports, energy strategies, and BREEAM pre-assessments.
Expert Witness and Training Services
Professional witness support and bespoke training in energy efficiency, carbon reduction, water management, overheating risk, and sustainable construction, covering Building Regulations Parts L, O, and G, and BREEAM standards.
Latest news
All the Latest News and Articles
Poor Energy Efficiency Ratings Could Lose House Sellers Thousands
This New Year house sellers are being urged to make sure their property is energy efficient before it goes on…
Energy Efficiency Makeover Saves Couple Over 60% in Fuel Costs
A Cambridge couple who carried out a total overhaul of their home’s heating system to make sure it was completely…
Celebrating a Double Anniversary
This year marks both a Silver and a Diamond anniversary for Peter Thom, MD of Cambridgeshire-based Green Heat, a firm…
