# UK Establishes Great British Grid with Up to £4 Billion Investment

> The UK government announced a new publicly owned body, Great British Grid, on September 29, 2026, allocating up to £4 billion from Great British Energy's budget to accelerate electricity network infrastructure development.

By PrimaryBrief newsroom · Published 2026-10-24T04:09:01.494583Z
Canonical: https://primarybrief.com/article/uk-establishes-great-british-grid-with-up-to-4-billion-investment-96b478ee

The UK government launched Great British Grid (GBG) on September 29, 2026, establishing it as a new publicly owned body within Great British Energy (GBE). Up to £4 billion from GBE's existing budget will support its initial operations to accelerate electricity network infrastructure development [5][11][16].

This initiative aims to address critical delays in grid connections and enhance the UK's energy security. By streamlining infrastructure upgrades, the government expects to reduce costs for both households and businesses, facilitating the expansion of clean energy projects nationwide [5][8][9].

## What the records show

Great British Grid's primary role is to invest public capital alongside private investors in new electricity network infrastructure [3][9][12]. It is designed to complement existing institutions like Ofgem and the National Energy System Operator (NESO), rather than replacing them [5][9]. The government views this as a strategic move to overcome long-standing challenges in grid capacity and connection backlogs, which have hindered the deployment of renewable energy [5][9][10].

The start-up costs for GBG will be drawn from Great British Energy's existing budget [3][8][9]. Great British Energy was initially confirmed with an £8.3 billion capital allocation following the 2024 general election [1][22]. However, in June 2025, £2.5 billion of GBE's initial funding was reallocated to support nuclear projects under Great British Nuclear, leaving GBE with approximately £5.8 billion for its core mission [1]. Reports indicate that up to £4 billion of this revised GBE budget will be directed towards the new Great British Grid for its initial operations [11][14][16][20]. The long-term budget for GBG remains unfinalized and will be determined during a future Spending Review [3][9][11].

## The timeline

Great British Energy itself was legally established in May 2025, following the Great British Energy Act 2025 [1][4]. Its strategic plan, published in December 2025, outlined ambitions to deliver at least 15 GW in clean energy generation and storage, mobilize £15 billion of private finance, and support 10,000 jobs by 2030 [2][3]. GBE also launched its Local Power Plan in March 2026, backed by £1 billion, to invest in community energy projects [2][4]. In October 2026, GBE expanded its £300 million Supply Chain Fund to support more UK manufacturers in the offshore wind and electricity networks sectors [18][21]. The announcement of Great British Grid followed on September 29, 2026 [5][10][13].

## What changed and for whom

The establishment of Great British Grid aims to accelerate grid upgrades, improve connection times, and provide the network capacity needed for increasing demand from electrification and renewable generation [6][12]. This includes expanding high-voltage transmission networks and improving system flexibility [6]. The government anticipates that this will help meet demand from an expanding fleet of wind and solar farms [7].

## What the subject has said publicly

Prime Minister Andy Burnham announced the creation of Great British Grid on September 29, 2026, emphasizing its role in accelerating electricity network infrastructure and reducing energy costs [8][11][15]. Ed Miliband, the Secretary of State for Energy Security and Net Zero, has been a key figure in GBE's broader vision, aiming to make the UK a "clean energy superpower" and investing in projects like solar installations on public buildings [23].

## What we could not confirm

The specific long-term budget for Great British Grid after its initial funding and the precise quantification of how much its investments are expected to reduce household bills could not be confirmed from the available records [3][9][11].

## Evidence cited
1. Great British Energy funding (businessenergydeals.co.uk) — https://businessenergydeals.co.uk/
2. service.gov.uk (service.gov.uk) — https://service.gov.uk/
3. opengovt.uk (opengovt.uk) — https://opengovt.uk/
4. Great British Energy - Clean, Secure, Yours (greatbritishenergy.com) — https://greatbritishenergy.com/
5. Great British Energy Annual Report and Accounts 2025-26 (GOV.UK) — https://www.gov.uk/
6. UK Modernizes Electricity Grid to Support Renewable Energy Expansion (International Trade Administration) — https://trade.gov/
7. Britain’s grid overhaul: the ‘megaproject’ that has sparked a backlash (The Guardian) — https://www.theguardian.com/
8. Government announces new publicly-owned grid company - Zemo Partnership (zemo.org.uk) — https://zemo.org.uk/
9. The Energy Transition | UK government announces new public grid body - Osborne Clarke (Osborne Clarke) — https://www.osborneclarke.com/
10. Great British Grid: Accelerating the UK's Energy Transition | Foot Anstey (Foot Anstey) — https://www.footanstey.com/
11. Great British Grid: what it means for solar & batteries (Smart Solar Homes) — https://smartsolarhomes.co.uk/
12. The Great British Grid is coming - Baker McKenzie (Baker McKenzie) — https://www.bakermckenzie.com/
13. UK Government unveils Great British Grid to accelerate electricity network deployment (Enerdata) — https://www.enerdata.net/
14. UK unveils Great British Grid – but what does it mean for the energy sector? (Legal 500) — https://www.legal500.com/
15. Government announces new publicly-owned grid company (Friends of the Earth) — https://friendsoftheearth.uk/
16. Great British Grid: Public money, design decisions and the need for speed (pefconsultingpartners.co.uk) — https://pefconsultingpartners.co.uk/
17. UK Government announces Great British Grid to speed up connections and cut bills (Renewable Energy Magazine) — https://renewableenergymagazine.com/
18. Great British Energy expands £300m Supply Chain Fund to support more UK manufacturers - Great British Energy (gbe.gov.uk) — https://gbe.gov.uk/
19. 2026: The Year of Energy Transition Delivery (CC Group PR) — https://ccgrouppr.com/
20. UK Government to Launch Public Entity "GBG" for Grid Investment, Aiming to Resolve Grid Connection Backlog (BigGo) — https://biggo.com/
21. Great British Energy widens £300 million fund to tackle component bottlenecks (New Energy Weekly) — https://newenergyweekly.co.uk/
22. Great British Energy: one year on (Energy Saving Trust) — https://energysavingtrust.org.uk/
23. Miliband unveils plan for Great British Energy to lead clean energy revolution (LabourList) — https://labourlist.org/
24. Ed Miliband declares the end of the fossil fuel era (New Statesman) — https://www.newstatesman.com/
25. Solar and wind to cut bills and boost clean energy - Hansard - UK Parliament (UK Parliament) — https://www.parliament.uk/
26. Great British Energy widens GBP-300m Supply Chain Fund scope (renewablesnow.com) — https://renewablesnow.com/
27. Great British Energy widens £300m Supply Chain Fund to 29 critical components (offshorewind.tr) — https://offshorewind.tr/