Select Committee · Public Accounts Committee

Decarbonising the power sector

Status: Closed Opened: 30 Jan 2023 Closed: 24 Sep 2023 3 recommendations 20 conclusions 1 report

In October 2021 the Government set a target to decarbonise the power sector by 2035, subject to security of supply. But demand for electricity is expected to increase significantly in that timeframe as other sectors, such as transport and heating in buildings, switch to electricity to reduce emissions. Decarbonising in these circumstances will require the …

Clear

Reports

1 report
Title HC No. Published Items Response
Fifty-Ninth Report - Decarbonising the power sector HC 1003 21 Jun 2023 23 Responded

Recommendations & Conclusions

15 items
2 Conclusion Fifty-Ninth Report - Decarbonising the … Accepted

Provide annual updates to Parliament on progress towards energy objectives and risk mitigation.

We are sceptical that plans for expanding nuclear, solar and wind power are credible. Government has set itself highly challenging electricity generating capacity ambitions for nuclear (24GW by 2050), solar (70GW by 2035) and offshore wind power (50GW by 2030). By comparison, the UK’s current operating capacity is less than …

Government response. The government agrees with the recommendation but states it already provides annual updates to Parliament through its responses to the Climate Change Committee's annual Progress Reports and other departmental publications.
HM Treasury
3 Recommendation Fifty-Ninth Report - Decarbonising the … Accepted

Set out plans to provide greater clarity to the private sector for decarbonisation investment.

We are not convinced that government is providing enough clarity to the private sector to attract the investment that is necessary to build infrastructure, spur innovation and drive competition to lower costs. Government estimates that hundreds of billions of pounds in public and private investment will be needed to decarbonise …

Government response. The government published several strategies and roadmaps (Green Finance Strategy, Powering Up Britain, specific sector roadmaps in March 2023) to provide investment clarity, and plans to publish further roadmaps for other sectors later in 2023. It highlighted £20bn funding for …
HM Treasury
4 Recommendation Fifty-Ninth Report - Decarbonising the … Accepted

Set out strategies to influence other departments for power sector decarbonisation collaboration.

It is not clear the Department has the support it needs from other departments to achieve government’s power sector decarbonisation ambition. While it holds responsibility for, and takes the lead for achieving energy security and net zero, the Department nevertheless must rely on wider government to achieve its objectives. The …

Government response. The government states it already has robust governance and reporting processes at ministerial and official levels, including various committees and groups, to ensure cross-departmental collaboration and prioritization for power sector decarbonisation.
HM Treasury
6 Conclusion Fifty-Ninth Report - Decarbonising the … Accepted

Write to Committee setting out demand assumptions for energy efficiency and consumer behaviour policies.

We are not yet clear what the Department’s plans are in respect of energy efficiency and consumer behaviour. The Department acknowledges that improving energy efficiency and changing consumer behaviour are key to meeting net zero. However, recent energy bills support schemes have prioritised reducing costs to consumers over encouraging reduced …

Government response. The government states it has already modelled two scenarios (Net Zero Higher and Lower) and that full details of its modelling, assumptions, and how policies reflect energy efficiency and consumer behaviour are set out in the technical annex to the …
HM Treasury
9 Conclusion Fifty-Ninth Report - Decarbonising the … Accepted

Uncertainty creates investment hiatus despite billions needed for power sector decarbonisation.

The government estimated in its 2021 Net Zero Strategy that £280 to £400 billion of public and private investment in new generating capacity would be needed by 2037 to decarbonise the power sector. These costs represent the construction costs for power generation only, and do not include the costs for …

Government response. The government agrees with the committee's observation, recognizing the importance of clear plans for private investment. It has published several strategies, committed £20 billion for CCUS, launched annual Contracts for Difference rounds, and is producing sector-specific investment roadmaps to provide …
HM Treasury
10 Conclusion Fifty-Ninth Report - Decarbonising the … Accepted

Contracts for Difference mechanism effectively reduced offshore wind costs and spurred investment.

The Department told us that its role is to enable competition to drive innovation and cost reduction, and that the best example of this is how contracts for difference have sustained investment and innovation from the private sector in offshore wind. It told us that costs fell far faster and …

Government response. The government agrees and aims to provide clarity to the private sector to encourage investment by publishing the 2023 Green Finance Strategy and other plans. These initiatives include £20 billion for CCUS, annual Contracts for Difference rounds, and sector-specific investment …
HM Treasury
11 Conclusion Fifty-Ninth Report - Decarbonising the … Accepted

Government's ambitious CCUS strategy remains untested at scale despite significant investment

At the 2023 Spring Budget, the Chancellor announced £20 billion for carbon capture, usage and storage (commonly referred to as CCUS).32 However, while providing a signal to the sector and investors, this technology is untested at scale in the UK. The Department acknowledges that its current ambition for CCUS to …

Government response. The government accepts the committee's observation, stating a target implementation date of December 2023, and details its efforts to provide clarity and encourage investment through recent publications, £20 billion funding for CCUS, and plans to publish further sector-specific roadmaps later …
HM Treasury
12 Conclusion Fifty-Ninth Report - Decarbonising the … Accepted

Inconsistent government energy policy undermines investor confidence and hinders decarbonisation progress

More generally, changes in policy direction can affect investor confidence in government.36 Energy policy instability, such as the stop-start nature of some initiatives like the Green Homes Grant Voucher Scheme, which was extended and then abruptly closed, have eroded investor confidence in government.37 In March 2022 we highlighted that, in …

Government response. The government agrees with the committee's observation and has published the 2023 Green Finance Strategy, Net Zero Growth Plan, and Energy Security Plan to provide clarity and encourage investment. These plans include £20 billion for CCUS, annual Contracts for Difference …
HM Treasury
13 Conclusion Fifty-Ninth Report - Decarbonising the … Accepted

Department for Energy Security & Net Zero has limited levers to influence other departments

On 7 February 2023, the government announced that the Department for Business, Energy & Industrial Strategy (BEIS) would close, and its responsibilities would transfer to new departments, including the Department for Energy Security & Net Zero (the Department).39 The Department therefore takes the lead for energy security and net zero, …

Government response. The government states the recommendation has been implemented, describing its existing robust governance and reporting processes at both ministerial and official levels, including regular inter-departmental meetings, to ensure collaboration and alignment across government departments on decarbonising the power sector.
HM Treasury
14 Conclusion Fifty-Ninth Report - Decarbonising the … Accepted

Skills shortages and planning system issues hinder energy sector decarbonisation progress

The Department has created offshore wind, hydrogen, electricity network, and nuclear champions whose role includes identifying potential risks, barriers and bottlenecks to progress and making recommendations for both the Department and other parts of government where issues cross departmental responsibilities. Planning permission and skills in the workforce are two relevant …

Government response. The government agrees with the committee's observation, stating the points raised are already implemented through existing robust governance and cross-departmental processes to coordinate action across relevant departments.
HM Treasury
15 Conclusion Fifty-Ninth Report - Decarbonising the … Accepted

Cross-Whitehall collaboration challenged by competing departmental ambitions and long-term skills gaps

The Department told us that it is essential that it builds strong partnerships and collaborative relationships with relevant departments across Whitehall, and that it works with No. 10 and the Cabinet Office to ensure that departments are aligned.48 However, other departments and organisations have their own issues and competing ambitions.49 …

Government response. The government states the recommendation has been implemented, detailing its existing robust governance and reporting processes, including ministerial and official level committees, to ensure collaboration and alignment across departments on decarbonising the power sector.
HM Treasury
20 Conclusion Fifty-Ninth Report - Decarbonising the … Accepted

Energy bill support schemes prioritise cost reduction over encouraging demand efficiency

Government’s Net Zero Strategy expects a 40% to 60% increase in electricity demand by 2035 as more modes of transport and heating switch to electricity from fossil fuels.61 The Department told us it is expecting a corresponding increase in electricity generation from roughly 300TWh (a terawatt-hour is a unit of …

Government response. The government states the recommendation has been implemented, describing its existing Net Zero Higher and Lower modelling scenarios which estimate future power demands and consider consumer choices and energy efficiency. Government policies are designed to incorporate these factors and incentivise …
HM Treasury
21 Conclusion Fifty-Ninth Report - Decarbonising the … Accepted

EPC rating C requirement implementation faces ongoing cost-effectiveness and affordability debate.

We asked the Department about its plans to encourage consumers, industry and households to invest in greater energy efficiency. It told us that this is an important aspect of its strategy, which includes encouraging short-term demand flexibility from consumers to use less electricity at times of peak demand (by, for …

Government response. The government agrees with the committee's observation, stating the points raised are already implemented through existing strategies that use modelling scenarios and policies to encourage energy efficiency and consumer behavioural change, as detailed in their Carbon Budget Delivery Plan.
HM Treasury
22 Conclusion Fifty-Ninth Report - Decarbonising the … Accepted

Government's energy efficiency initiatives plagued by fragmented, stop-go implementation track record.

In its 2022 Autumn Statement the Chancellor announced new funding of £6 billion from 2025 to 2028 to improve energy efficiency for households, business and the public sector. The Chancellor announced that an Energy Efficiency Taskforce would be charged with improving energy efficiency in the UK by reducing energy consumption …

Government response. The government agrees with the committee's observation, stating the points raised are already implemented through its existing strategies that use modelling scenarios and policies to encourage energy efficiency and behavioural change, as detailed in the Carbon Budget Delivery Plan.
HM Treasury
23 Conclusion Fifty-Ninth Report - Decarbonising the … Accepted

Significant uncertainty remains regarding consumer behaviour change for power sector decarbonisation.

We also asked the Department about how government can influence consumer behaviour. The Department told us that its modelling of power sector decarbonisation by 2035 covers different pathways characterising different assumptions of consumer behaviour and energy efficiency (such as home storage), but acknowledged that it does not know which of …

Government response. The government states the recommendation has been implemented, explaining its existing Net Zero Higher and Lower modelling scenarios that estimate future power demands and consider consumer choices and energy efficiency. Government policies are designed to incorporate these factors and incentivise …
HM Treasury

Oral evidence sessions

1 session
Date Witnesses
23 Mar 2023 Ashley Ibbett · Department for Business, Energy and Industrial Strategy, Jeremy Pocklington CB · Ministry of Defence, Jonathan Mills · Department for Energy Security and Net Zero View ↗

Correspondence

2 letters
DateDirectionTitle
11 Jul 2023 Correspondence from James Armstrong, Managing Partner, Bluefield Partners LLP, …
17 Apr 2023 Correspondence from Jeremy Pocklington CB, Permanent Secretary, re follow up qu…