Smart Transport

‘Government has a long way to go to reach net zero’, says NAO

Gareth Davies

The National Audit Office (NAO) has said that while the Government has made progress on increasing low emission vehicle adoption, there is “a long way to go” to achieve its carbon reduction ambitions.

The NAO has put together a full report, 'Reducing carbon emissions from cars', which looks to hold the Government to account on its public spending plans for carbon reduction from transport.

Gareth Davies, the head of the NAO, said: "The number of ultra-low emission cars on UK roads has increased, but meeting the government's ambitious targets to phase out new petrol and diesel cars in less than a decade still requires a major transition for consumers, car makers and those responsible for charging infrastructure.”

Transport is the UK's largest source of carbon emissions, with most emissions coming from cars.

In November 2020, the government announced plans to stop the sale of new cars that are powered solely by petrol or diesel by 2030.

From 2035, only zero-emission cars can be sold, and by 2050 the government wants almost all cars to emit zero carbon.

At September 2020, 1.1% of UK cars were ultra-low emission including 0.5% which were electric.

By the end of September 2020, sales of new ultra-low emission cars accounted for 8% of the market, above the projections of the Office for Zero Emission Vehicles (OZEV).

Substantial EV growth needed 

While sales of electric cars have increased, NAO said “substantial growth is required to meet the Government's target for them to comprise 100% of new sales from 2035”.

Since 2011, total carbon emissions from passenger cars have reduced by around 1%, which is less than the Department for Transport (DfT) expected.

Average emissions from new cars in Great Britain fell year on year between 2011 and 2016. 

However, emissions increased by 6% between 2016 and 2019.

This increase has been attributed to factors including a rise in the sale of sports utility vehicles (SUVs), increased road traffic and travel by car, and revised methods for estimating carbon emissions.

OZEV provides grants to encourage consumers to buy ultra-low emission cars, and subsidies to fund the installation of charge-points.

It had spent £1.1 billion by March 2020, including £1bn on the plug-in car grant, which reduces the upfront purchase cost of qualifying cars.

Despite its efforts, and its work to assess the likely impact on the market of changes to the plug-in car grant, the NAO said OZEV “cannot clearly demonstrate the cumulative impact the grant has had on the growth of ultra-low emission cars above and beyond what might have happened anyway”.

Significant growth in charging infrastructure

However, the NAO does note there has been “a significant growth in charging infrastructure over the last decade”.

By March 2020, Government funding had contributed to 142,604 new charge-points, most of which are on private driveways.

OZEV has spent £97.2 million supporting the installation of more than 133,000 chargers for those with off-street parking.

NAO said that when OZEV set out its intention to support charge-points in 2011, OZEV did not quantify what it intended to achieve with this funding, making it difficult to determine whether it has met its initial expectations.

Nonetheless, by October 2020 there were a total of 19,487 publicly accessible charge-points in the UK, an increase from fewer than 1,000 in 2011.

Government has recently set new targets for there to be at least six ultra-rapid charge-points at each service area across England's main road network by 2023 and a total of 2,500 across the network by 2030.

OZEV informed the NAO that it initially focused on supporting people with off-street parking or with an ability to charge at work.

The NAO said: “OZEV has not yet focused sufficiently on charge-point availability for people who do not have a driveway.”

Between 2017-18 and 2019-20, OZEV allocated £8.5m to help local authorities install on-street residential charge points, but uptake has been slow.

OZEV consulted some local authorities before setting up the scheme, but local authorities told the NAO the scheme had been designed without sufficient consultation and as a result it was difficult to bid for funding.

In December 2020, the NAO published a report on how the Government is organising itself to deliver net zero by 2050.

Many of the issues it identified apply to managing the transition to zero-emission cars.

For example, on the importance of mitigating uncertainty, stakeholders have said the 2050 car decarbonisation target has helped to galvanise the automotive industry to change, but that the lack of long-term certainty over the Government's plans, including its financial support, has hindered investment planning.

The NAO recommends that OZEV, DfT and the Department for Business, Energy & Industrial Strategy (BEIS) should develop detailed plans to achieve the 2050 target, reporting progress against clear milestones at regular intervals.

Davies added: “Government now has the opportunity to reflect on what has gone well and better target its interventions and spending to secure this fundamental change and deliver the carbon reduction required.”

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