Last edited 16 Feb 2021

Main author

The Institution of Civil Engineers Institute / association Website

What does net-zero emissions by 2050 mean for the infrastructure sector?

Fly ash blue.jpg
The Committee on Climate Change (CCC) has recommended that the UK government puts in place a target for net-zero greenhouse gas emissions by 2050. This means taking steps to reduce emissions in the first instance and then off-setting any that remain in order to deliver the net effect of zero emissions.


[edit] Introduction

The 2050 target would supersede the Climate Change Act 2008 that legislated for a 80% reduction in greenhouse gas emissions by 2050 based on 1990 levels. It is actually a more ambitious target than its predecessor and will require an even greater co-ordination of effort from government, industry and the public, if it is to be realised.

It is important to recognise that at this stage the target is merely a Committee on Climate Change (CCC) recommendation. Nonetheless, in the event that Parliament does legislate for the target to become legally binding, it is prudent for different parts of the UK economy to start thinking about how it might be achieved. This includes the infrastructure sector.

[edit] Performance of the UK’s infrastructure sector on carbon emissions

The performance of the infrastructure sector on carbon emissions (CO), in the main, is nothing to write home about. Based on figures recently published by the Department of Business, Energy and Industrial Strategy, it is clear that the UK’s infrastructure networks (despite their importance to the UK economy) are major emitters of CO.

The transport sector accounted for 33% of all CO emissions in 2018, with the majority of these coming from road transport. In the same year, electricity from power stations contributed 18% of all CO emissions, while the residential sector (mainly gas for heating) was also responsible for a similar proportion. That is 69% of all CO emissions without considering other infrastructure sectors, like waste management.

Most worrying is that in the transport and residential sectors there have only been negligible reductions in CO emissions levels since 1990 – 3% and 16% respectively. Clearly, there is work to do if a net-zero emissions target for 2050 is to be achieved.

[edit] What changes are required across UK infrastructure networks to help deliver a new 2050 target?

In the transport sector, but roads in particular, the National Infrastructure Commission has made a clear recommendation to the government on the need to prepare for 100% electric vehicle (EVs) sales by 2030.

This is an intervention that the Institution of Civil Engineers (ICE) welcomes, and to ensure that it comes to fruition it is necessary that a pay-as-you-go model is introduced in parallel on the busiest roads in England. This will ensure that an appropriate funding stream is in place to facilitate the network upgrades that will be required to support the large-scale deployment of EVs.

As the CO emissions figures for the residential sector demonstrate, there is clearly a lot to do in order to decarbonise our heating networks. Developing a coherent and joined-up plan to enable this should be a national priority for UK energy policy when the next prime minister is in post.

In electricity generation, there has been more progress. Renewables capacity has tripled over the last five years, while electricity generation from fossil fuels has fallen by a third over the same period.

Yet there is still more to do. If the true potential of renewables is to be realised, then efforts must be stepped up to develop the energy storage technologies that will enable their intermittency to be managed. The government must maximise contracts for difference and other incentive mechanisms to develop commercial storage that is capable of doing this.

[edit] The role of the National Infrastructure Strategy

The government’s forthcoming National Infrastructure Strategy (NIS) represents a landmark moment for the UK’s infrastructure sector. The strategy is an opportunity to set out the priorities on infrastructure for many years to come, alongside a clear plan for their delivery.

As support for a net-zero target for greenhouse gas emissions grows and its enactment in legislation becomes more likely, the NIS also provides the perfect opportunity for the government to outline its ambitions for cleaning up the infrastructure sector. The ICE would urge the government to seize this opportunity.

[edit] Get involved

ICE members with an interest or expertise in this area and who are keen to get involved, through industry conversations or by writing on ICE's Infrastructure Blog, click uk here to get in touch.

[edit] About this article

This article was written by Ben Goodwin, ICE Lead Policy Manager. It was previously published on the ICE webite in June 2019 and can be accessed here.

[edit] Related articles on Designing Buildings Wiki

--The Institution of Civil Engineers

Designing Buildings Anywhere

Get the Firefox add-on to access 20,000 definitions direct from any website

Find out more Accept cookies and
don't show me this again