How the UK would keep broadcasting and services running in a long blackout
Published November 10, 2026 · Updated November 10, 2026 · 3 sources
The BBC set out its emergency radio plan for a prolonged power failure, as the government's Be Ready campaign asks households to prepare. Five UK companies listed.
The exposed companies and what ATLAS says about each
There is no market close after the event yet: the reaction will be visible at the close of November 10. This page will be updated then with the actual change. In the meantime, here is the data for each company.
Operates Britain's electricity transmission grid, which the story identifies as the basis of restoration planning in a prolonged outage. · Utilities
National Grid operates Britain's electricity transmission grid, which the coverage identifies as the basis of restoration planning in a prolonged outage. Its latest available close was £12.49 on 6 November. ATLAS's fair value estimate is £4.20, within a range of £1.71 to £10.23.
Latest available close
£12.49Close of November 6
Fair value (ATLAS)
£4.20Fair range: £1.71 to £10.23The price (£12.49) is 197.2% above that figure.
Chance of a rise in 1 month
54%Probability of closing higher than today within 21 sessions.Normal range: half of the scenarios end between £12.13 and £12.97; 9 in 10, between £11.44 and £13.75.
UK electricity network and generation business, exposed to resilience and restoration standards for power supply. · Utilities
SSE has a UK electricity network and generation business; it is included for its activity in the sector, not because the event affects it. Its latest available close was £26.49 on 6 November, against an ATLAS fair value estimate of £12.43. Its next earnings date is 18 November.
Latest available close
£26.49Close of November 6
Fair value (ATLAS)
£12.43Fair range: £10.00 to £15.30The price (£26.49) is 113.1% above that figure.
Chance of a rise in 1 month
53%Probability of closing higher than today within 21 sessions.Normal range: half of the scenarios end between £25.55 and £27.66; 9 in 10, between £23.82 and £29.67.
Water and wastewater utility; the story notes a power outage can stop the pumps that supply water to taps. · Utilities
United Utilities is a water and wastewater utility; the coverage notes that a power outage can stop the pumps that supply water to taps. Its latest available close was £15.43 on 6 November. The sheet shows no ATLAS fair value estimate, and its next earnings date is 12 November.
Latest available close
£15.43Close of November 6
Chance of a rise in 1 month
53%Probability of closing higher than today within 21 sessions.Normal range: half of the scenarios end between £14.98 and £16.03; 9 in 10, between £14.11 and £17.02.
Major UK telecoms and network operator, exposed to the risk that a power failure disrupts phone and mobile signal. · Communication Services
BT is a major UK telecoms and network operator, exposed to the risk that a power failure disrupts phone and mobile signal. Its latest available close was £2.17 on 6 November. ATLAS's fair value estimate is £2.93, within a range of £1.86 to £4.62.
Latest available close
£2.17Close of November 6
Fair value (ATLAS)
£2.93Fair range: £1.86 to £4.62The price (£2.17) is 25.9% below that figure.
Chance of a rise in 1 month
51%Probability of closing higher than today within 21 sessions.Normal range: half of the scenarios end between £2.06 and £2.29; 9 in 10, between £1.88 and £2.52.
UK mobile network operator; the story notes phone towers may lose backup power during an extended blackout. · Communication Services
Vodafone is a UK mobile network operator; it is included for its activity in the sector, not because the event affects it. Its latest available close was £1.17 on 6 November, against an ATLAS fair value estimate of £2.62. Its next earnings are on 10 November before the open.
Latest available close
£1.17Close of November 6
Fair value (ATLAS)
£2.62Fair range: £1.80 to £8.18The price (£1.17) is 55.6% below that figure.
Chance of a rise in 1 month
52%Probability of closing higher than today within 21 sessions.Normal range: half of the scenarios end between £1.12 and £1.22; 9 in 10, between £1.03 and £1.32.
On 7 November the BBC reported how it would keep broadcasting if a prolonged power failure hit Britain, with FM radio as its fallback [3]. The government's Be Ready campaign warns that severe weather and cyber-attacks could disrupt essential services [1]. The market reaction will be visible at the close of 10 November, the first session that can reflect the event, and this page will be updated then.
The BBC asked how prepared the UK is for an event that could leave millions without power, water and communications. Its report notes that the government's Be Ready campaign warns severe weather and cyber-attacks could disrupt essential services [1].
According to Open Magazine, the BBC's fallback is FM radio from an emergency studio, with generators keeping the transmitters on. It adds that the Be Ready campaign was launched on 22 October and asks people to keep three days' worth of essentials at home [3].
Open Magazine also says the grid operator is working to a five-day restoration standard [3]. Both sources recall the December 2015 flooding in Lancaster, when the electricity supply to 61,500 people went, according to the BBC [1]. Open Magazine reports that card payments failed and mobile and internet connections failed widely [3].
The Telegraph carried an article whose headline reads: Britain's blackout survival plan? Listen to the BBC [2].
What ATLAS data show
ATLAS's model estimates differ widely across the group. National Grid's latest close of £12.49 is 197.21% above the fair value estimate of £4.20, and SSE's £26.49 is 113.12% above its estimate of £12.43. BT's £2.17 is 25.92% below its estimate of £2.93, and Vodafone's £1.17 is 55.58% below its estimate of £2.62. These are model estimates with wide ranges, not promises, and United Utilities has no estimate in the sheet.
No close after the event is available yet. The market reaction will be visible at the close of 10 November, and this page will be updated then. Prices shown are closes from 6 November and may change; a coincidence in time between events and prices would not show cause and effect.
What you get with ATLAS
Fair value of each company, with its range, against today's price.
Chance of a rise in 1 month and the normal price range, from a calibrated model.
Earnings: next date, estimated EPS and surprise history.
Dividends and alerts by email when a company reports.
Closing prices, fair value, probabilities, earnings and dividends: ATLAS own data as of November 10, 2026. How we calculate fair value.
Information, not advice. This content is informational and is not an investment recommendation or an offer to buy or sell securities. ATLAS estimates come from statistical models using public data, can be wrong, and past performance does not guarantee future results. Disclaimer
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