LETI says Building Regulations are hampering low carbon London goals

Published:  07 March, 2018

LETI, London Plan, zero carbon
LETI: Professionals offering evidence-based recommendations

The London Energy Transformation Initiative (LETI) has responded to the London Plan consultation, stating that it believes the current energy policy relating to carbon emissions in London buildings will not deliver net zero carbon by 2050.

LETI is a voluntary network of over 150 built environment professionals, including engineers, contractors, architects and FMs. The group is coordinated by Elementa Consulting and was established to work collaboratively to put together evidence-based recommendations for the London Plan and the London Environment Policy.

LETI says that the Plan is unlikely to meet its key target for a number of reasons, including the fact that low energy solutions “are being positively hindered by Building Regulations Part L calculation methodology”. LETI claims that outdated carbon intensities are driving unintended “lock-in” to fossil fuel and combustion air pollution.

The group also believes that current planning targets, based on using Part L tools and the ‘notional building’ encourage a culture of false reporting. This does not lead to best practice design and performance.

Another reason for failure to meet targets is that new buildings “are not performing as calculated on their claimed carbon reductions by a significant margin”.

LETI fully supports the goal of achieving a fully Zero Carbon London by 2050, stating: “We believe that this target is not only possible, practical and achievable, but it will also further support London’s prosperity and skills growth.”

But in order to achieve the objective, LETI says that a key milestone should be to ensure that all new buildings operate with zero emissions by 2030. The benefit will be that the changes required to achieve zero carbon new builds will offer a learning opportunity that can be applied to existing buildings – and so that new buildings do not add to London’s carbon burden.

The full report can be downloaded from the link below.

comments powered by Disqus



Welcome to Modern Building Services Online, the web edition of Modern Building Services (MBS) journal and the UK's most popular Building Services engineering site. Modern Building Services covers the entire Building Services Engineering industry. This site contains archived content from the journal, plus web-specific content.

When you go to our digital edition, you can also access the archive of digital editions.


Modern Building services has a group
on Linkedin - join us!


  • Intermediate / Senior Mechanical Engineer

    The Mechanical team undertake the design and specification of a range of Mechanical building services in a lead or supporting role, depending on project complexity and scale. You should demonstrate a flexible approach to design and team working and wil......

  • Senior Urban Designer

     Applicants will be Master’s Degree qualified Architects / Urban Designers, with a strong portfolio of work highlighting a variety of projects at a range of scales and types, with strong focus on regeneration, infrastructure-led projects and major develo......

  • Principal Structural Engineer

    We are currently recruiting on behalf of a global client, with a diverse range of award winning projects to their name. Their experience spans a host of market sectors, including transport, infrastructure, defence, scientific, education, high-tech and ......

more jobs »


"Is the Building Services industry lagging behind in the implementation of BIM?"