Net Zero Carbon

We design buildings to operate at Net Zero Carbon and create stand-alone buildings independent of mains energy supplies.

new zero carbon

The core of our expertise is combining our Engineering knowledge with our Whole Life Carbon skills in order to provide strategic guidance for designing real low-energy buildings.

This includes assessing embodied carbon, implementing carbon offsetting measures and developing Low and Zero Carbon Strategies. We also craft Sustainability Statements tailored for Planning Applications, reflecting your project’s commitment to environmentally responsible architectural practices.

Our primary focus is to help design developments which reduce embodied carbon in construction and realise a pathway to Net Zero Carbon in Operation. Expanding our capabilities, we specialise in Whole Life Carbon (WLC) assessments in accordance with the recognised Standards and incorporating guidelines from leading organisations who set the market-leading frameworks, such as UK Green Building Council and LETI.

We follow the RICS Professional Statement to deliver our assessments using the protocols in BS EN 15978 and always have our final report audited by a third party to be transparent about how we have evaluated WLC. We carry out our own evaluation of Operational Energy using CIBSE TM54 as the framework, supplemented with real data we have gathered from operational buildings, from which our own metrics are created.


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To enhance our assessments, we leverage advanced tools like OneClick LCA, boasting a vast database verified by the Building Research Establishment (BRE).


In the realm of Whole Life Carbon Assessment, we go beyond carbon calculations, evaluating operational emissions from buildings. Using the IES Virtual Environment, a computational fluid dynamics software, we model and project energy performance, allowing us to predict and minimise likely energy consumption and associated carbon emissions. This comprehensive methodology contributes to a sustainable and resilient built environment, aligning with our forward-thinking approach.

– Adherence to BS EN 15978:2011.

– Application of guidance outlined in the UKGBC’s Net Zero Carbon Buildings: A Framework Definition (April 2019).

– Adoption of the methodology presented in the RICS Whole Life Carbon Assessment for the Built Environment (November 2017).

– Review of overarching targets, such as those outlined in the LETI Embodied Carbon Primer (January 2020) and/or RIBA 2030 Climate Challenge (2021), to assess their suitability for the specific building use/type.

– Calculation and reporting of the development’s carbon in operation at the stages of concept design, technical design, and as-built.

– Calculation and reporting of the development’s carbon in construction at the stages of concept design, technical design, and as-built.

– Conducting a materials options appraisal to minimise the development’s embodied carbon, involving workshops and consultation during the concept design and technical design stages.

– Providing guidance to the design team and main contractor to furnish the necessary material and quantity data at each assessment stage.


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  • We’ve instructed ESC on an array of projects and always appreciate the help and guidance provided by the team there. They are responsive, pro-active, technically proficient and dedicated to ensuring our projects are delivered promptly, sustainably and within budget.

    Paul Gillott – Project and Development Manager – Calthorpe Estates

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    Building Physics

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    Energy Management


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    Net Zero Carbon