Net Zero Carbon – how to set up for success

Planning for success

Before any strategy can be implemented it’s important to have a clear roadmap and target. For many companies, whilst the vision is clear, often there is no defined target - i.e. what do we mean by zero carbon? Is it:

• Net zero carbon (100% CO₂ reduction)?
• Zero carbon through off-set actions off site?
• A percentage CO₂ reduction combined with an off-set payment?

The latter cannot be justified if we are serious about meeting net zero carbon in the UK by 2050.  

Now let’s assume the aim is to achieve net zero carbon for a certain asset. There are questions which must be addressed at the initial stage:

• How far can passive design measures go in CO₂ reduction? Where is the limit?
• What technologies should we use?
• Are the chosen options affordable, practical and repeatable?
• Is the available technical software capable to model and analyse the outcome?

It might not be easy to formulate coherent responses to the above questions; however, this will make defining the strategy and roadmap much easier.

What about operational carbon emissions?

Most of the operational carbon emissions for a building are associated with energy consumption, i.e. gas and electricity consumption for heating, cooling, power, during use. Operational carbon is generally considered to be responsible for the biggest share of total emissions.  There is an intuitive link between design choices and operational carbon performance: using more insulation, efficient building services and renewable energy generation will result in proportionally lower CO₂ emissions, while the link between design choices and embodied carbon performance is not so intuitive. Achieving better performance requires all aspects of the design to be considered simultaneously.

Our net zero carbon team can set up an energy reduction target and bespoke plan to reduce your energy intensity by a practical percentage, for assets that have been under your operational control for at least two years.  

A bespoke energy reduction plan can:

• Support businesses to improve energy productivity by at least 20-30 per cent or even more by 2030.
• Establish an energy efficiency scheme to help large companies install measures to cut their energy use and bills.
• Publish decarbonisation and energy efficiency action plans.
• Phase out the installation of high carbon forms of fossil fuel heating in new and existing businesses off the gas grid.
• Support the recycling of heat produced in industrial processes, to reduce business energy bills and benefit local communities.

Design for performance

When a building is designed, there is a targeted level of energy performance. Once a building is completed however, the reality is that these targets often aren’t achieved. This is called performance gap. The gap might originate from building material/fabric durability and usability, ventilation strategy, building service performance or any other operational installations. Most of the problems arise in the design and construction (or renovation) of buildings which can be addressed through better knowledge and more care. It is plausible that those projects which fail to meet the performance which is required for a good building should not merely be seen as average, but as unacceptable, but as failures.

To ensure that our client’s future assets also meet these targets, we have developed a Design for Performance approach to set energy intensity targets. This tool aims to close the performance gap by ensuring that new developments as well as existing assets operate as efficiently as they were designed to. We will then map the performance against the UK Green Building Council's (UKGBC) pathway to net zero to ensure that they are in line with industry best practice.