Why is RAB being pursued for new nuclear

Nuclear generation has experienced a stop-start approach to investment in GB since the then Labour government put it back on the policy agenda in the early 2000s. Even with the addressing of environmental and operational concerns to the satisfaction of policymakers and regulators, its high capital costs made it require policy intervention to confirm development. After pressing go on Hinkley Point C using a Contract for Difference (CfD) mechanism that repaid the investors after production started, concerns about affordability from both consumer and investor perspectives stalled further progress.

A new mechanism for the sector, the Regulated Asset Base (RAB) model was confirmed last year as a mechanism that might offset these concerns and enable the UK government to deliver on its commitment to decide on another new nuclear power station during the current Parliament. That new station is expected to be Sizewell C and the RAB model is expected to deliver lower costs by increasing investor certainty on anticipated revenues.

In this blog, we explore the impacts of the shift to the RAB model on potential nuclear build and modelled a range of scenarios using our Benchmark Power Curve (BPC).

If you are interested in learning more about potential impacts of RAB or have an opinion about any of the above, we would love to hear from you at m.qvist@cornwall-insight.com and t.edwards@a-ferguson

To keep reading, please log in to your account or sign up for free

Related thinking

Energy Market Design

REMA: electricity market design choices

Electricity markets will serve as the foundation for the future GB energy system.  This article examines some of the market design decisions that will be considered by the Review of Electricity Market Arrangements (REMA). Market design goals At its most simple, a well-functioning market will attract enough potential “buyers” and...

Low carbon generation

Head to Head: CfD vs RESS

2022 has been busy for renewable developers in Great Britain and Ireland, with both the fourth allocation round of the Contracts for Difference (CfD) scheme and the second round of the Renewable Electricity Support Scheme (RESS) concluding this summer. We compared the latest results of the CfD and RESS schemes...

Low carbon generation

Energy System Reform: Ofgem shares plans for Britain’s energy system

Against the backdrop of record high and volatile energy prices, Ofgem set out on 8 July its view on key aspects of the GB energy system where it considers significant reform is required to deliver a resilient, low cost, low carbon energy sector. Recent developments in the energy market, such...

Energy Market Design

Can we fix the wholesale energy market this winter to lower prices and should we want to? 

The Review of Electricity Market Arrangements (REMA) is intended to discuss and decide on appropriate market arrangements for 2035 in a Net Zero, low marginal cost, renewables-dominated market. It is unlikely it has the scope or capability to intervene in the market arrangements ahead of this winter. Therefore, some new interventions...

Low carbon generation

3G meets in-person| Lots discussed in our low carbon user group

Last week I took a trip to sunny central London to attend Cornwall Insight’s Green Generators Group (3G), which is the user group for our low carbon generation service. In what felt like a novelty after a two-year hiatus of face-to-face forums, I was joined by my colleagues Dan Starman...

Regulation and policy

New nuclear: BEIS consults on RAB revenue arrangements

BEIS published on 14 June its consultation on the revenue stream element of the proposed Regulated Asset Base (RAB) model to incentivise the deployment of new nuclear projects. BEIS is responsible for implementing this as legislated by the Nuclear Energy (Financing) Act 2022 which received Royal Assent on 31 March...

Low carbon generation

CfD Auction Secures Greatest Amount Of Renewable Capacity To Date

Yesterday, the government released the results of the fourth round of the Contracts for Difference (CfD) scheme, securing almost 11GW of renewable capacity across 93 projects, nearly double the 5.8GW awarded in Allocation Round 3 in 2019. The greatest capacity – at 7.0GW - has been secured from new offshore wind projects,...

Business supply and services

Re-balancing the balancing costs –BSUoS charges to be levied solely on suppliers from April 2023

Balancing the electricity system costs money. National Grid in its role as Electricity System Operator (ESO) takes actions in every half hour to achieve the remarkable feat of keeping supply and demand finely balanced on our national electricity system – maintaining a system which runs between 49.8 and 50.2Hz with...