Evidence
Every figure on this site, with its source.
47 rows. Each one links to where the number comes from and says when we checked it (3 Nov 2026). Pages link here instead of restating sources. Nothing on this page is a customer result; modelled examples are marked as such.
The NHS estate
| Figure | What it is | Source | Accessed |
|---|---|---|---|
NHS maintenance backlog £15.9bn, up 15.7 % in a year #eric-backlog | Cost to eradicate the maintenance backlog across the NHS estate in England, ERIC 2024/25. | 3 Nov 2026 | |
NHS estate running costs £14.0bn #eric-running-costs | Total cost of running the NHS estate in England, ERIC 2024/25. | 3 Nov 2026 | |
NHS estate energy 11.3bn kWh #eric-energy | Energy consumed by the NHS estate in England, ERIC 2024/25. | 3 Nov 2026 | |
High-risk backlog £3.5bn, up 27.8 % #eric-high-risk | The high-risk share of the backlog, where failure could cause catastrophic harm or major disruption, ERIC 2024/25. | 3 Nov 2026 | |
Estates-failure incidents 7,966 incidents, 1,584 critical, 14,596 clinical hours lost #eric-incidents | Clinical service incidents caused by estates and infrastructure failure in 2023/24. The party’s analysis of ERIC data, not an NHS publication. | 3 Nov 2026 | |
Great British Energy and the NHS £100m, 132 solar and battery projects, 78 trusts #gbe-nhs | Great British Energy funding for NHS trusts to install solar panels and battery storage, March 2025. | 3 Nov 2026 | |
Battery replacing a UPS in the NHS A battery system replacing a UPS at a South Yorkshire NHS hospital #powerstar-nhs | An energy-storage vendor’s account of a hospital installation. Vendor article, undated. | 3 Nov 2026 |
Duties and standards
| Figure | What it is | Source | Accessed |
|---|---|---|---|
HTM 06-01 Clinical risk grades A–E; primary, secondary and tertiary supplies; generators “maintained in an operational readiness state” #htm-06-01 | Health Technical Memorandum 06-01, electrical services supply and distribution, NHS England. | 3 Nov 2026 | |
NHS EPRR core standards Business impact analysis and an annual board statement #nhs-eprr | NHS core standards for emergency preparedness, resilience and response. | 3 Nov 2026 | |
UKHSA Green Book, chapter 3 “arrangements should be in place for back-up facilities” #green-book | Storage, distribution and disposal of vaccines, UKHSA Green Book chapter 3. | 3 Nov 2026 | |
UKHSA cold-chain poster, 2026 “Have backup storage for your vaccines in case of power failure” #ukhsa-cold-chain-poster | UKHSA cold-chain poster for vaccine storage, 2026 edition. | 3 Nov 2026 | |
Vaccine wastage £6.4m at list price; 84 % avoidable; 64 % of incidents cold-chain failures; 13 % “unavoidable (cold chain failure, for example: power cut)” #ukhsa-vaccine-wastage | UKHSA figures for vaccine wastage reported in 2025, Vaccine Update issue 369, February 2026. | 3 Nov 2026 | |
GP practices in England 6,229 (July 2025) #gp-practices | Number of GP practices in England. | 3 Nov 2026 | |
Community pharmacies in England 11,098 (2024/25) #pharmacies | Number of community pharmacies in England. | 3 Nov 2026 |
Storms, outages and the grid
| Figure | What it is | Source | Accessed |
|---|---|---|---|
Storm Arwen, 2021 Over 1 million customers off; about 4,000 for more than a week; 13 days to full restoration; £29.64m compensation #storm-arwen | Ofgem’s final report on the network operators’ response to Storm Arwen, June 2022. | 3 Nov 2026 | |
Storm Éowyn, 2025 Almost 300,000 customers off in Scotland; six days to full restoration #storm-eowyn | Restoration of supply after Storm Éowyn. | 3 Nov 2026 | |
North Hyde: who is critical Networks “do not know whether their customers are classified as CNI” #north-hyde | The government’s response to NESO’s report on the North Hyde substation fire. | 3 Nov 2026 | |
North Hyde: backup and priority restoration CNI sectors expected to invest in backup power; a priority-restoration law under consideration #north-hyde-response | Commitments in the government’s response to NESO’s North Hyde report. | 3 Nov 2026 | |
Ofgem ED3 climate resilience Reliability metrics “exclude the most severe events, which can give false reassurance” #ofgem-ed3 | Ofgem’s ED3 sector-specific methodology consultation, climate-resilience metrics annex, October 2025. | 3 Nov 2026 | |
DNO-loaned battery packs 20,000 EcoFlow Delta 3 packs to medically dependent customers (February 2026) #ssen-packs | SSEN’s home battery pack programme for customers who need the most support. | 3 Nov 2026 | |
Met Office warnings feed National Severe Weather Warning Service public API #feeds-met-office | Machine-readable severe weather warnings used by storm mode. | 3 Nov 2026 | |
UK Power Networks live power cuts Open dataset of live faults #feeds-ukpn | Live power-cut data for the UKPN area, used by storm mode. | 3 Nov 2026 | |
National Grid Electricity Distribution live power cuts Open dataset of live faults #feeds-nged | Live power-cut data for the NGED area, used by storm mode. | 3 Nov 2026 | |
SSEN real-time outages Real-time outage dataset #feeds-ssen | Live outage data for the SSEN area, used by storm mode. | 3 Nov 2026 |
Flexibility markets
| Figure | What it is | Source | Accessed |
|---|---|---|---|
Demand Flexibility Service, winter 2024/25 1.98m sign-ups; 3,917.7 MWh over 44 events; £1.23m of accepted tenders #neso-dfs | NESO’s summary of the Demand Flexibility Service last winter. | 3 Nov 2026 | |
Redesigned Demand Flexibility Service, 2026 Live 9 April 2026; 0.1 MW minimum; turn-up as well as turn-down; 130 events worth about £40m; 6.28 % of requirements filled #dfs-2026 | NESO’s Q3 2026 demand-side flexibility route-to-market quarterly update. | 3 Nov 2026 | |
DNO flexibility tenders, 2022/23 4.6 GW tendered; 1.9 GW contracted #dno-flexibility | Great Britain’s distribution network operators’ flexibility procurement in 2022/23. | 3 Nov 2026 | |
NGED long-term flexibility tender, 2026 196 GWh awarded, including 52 GWh of FlexUp across 23 zones (February 2026) #nged-flexup | National Grid DSO’s largest long-term flexibility tender to date. | 3 Nov 2026 | |
SIF: hospital flexibility and resilience SSEN with NHS Tayside and NHS England; Alpha phase about £500k #sif-fortress | An Ofgem Strategic Innovation Fund project on hospital flexibility and resilience. | 3 Nov 2026 | |
Standby generators earning reserve revenue Two 800 kW standby generators earn reserve revenue through on-load tests #flexitricity-ruh | Flexitricity case study at the Royal United Hospital, Bath. | 3 Nov 2026 | |
Residential battery fleets as grid assets $1bn Series D at a $13bn valuation; fleet over 500 MWh (August 2026) #base-power | Base Power’s funding round, reported by Mercom. | 3 Nov 2026 |
Refrigeration energy
| Figure | What it is | Source | Accessed |
|---|---|---|---|
UK food cold-chain refrigeration about 28.6 TWh per year #cold-chain-twh | Baseline electricity use of refrigeration in the UK food cold chain. | 3 Nov 2026 | |
Retail refrigeration about 3.28 TWh per year, about 1 % of UK electricity #retail-refrigeration | Electricity used by refrigeration in UK retail. | 3 Nov 2026 | |
Pharmacy fridge consumption Labcold RLDG0124 1.53 kWh/24 h; RLDF1819 1.56 kWh/24 h — about 65 W average, roughly 12 hours per usable kWh for one fridge #labcold-draw | Manufacturer datasheet figures used to size a protected circuit; the hours-per-kWh figure is arithmetic on them. Datasheet figures; runway is confirmed per asset in a trial. | 3 Nov 2026 | |
The modelled energy example on this site 12 cabinets, about 1,200 kWh per cabinet per year, 2 °C of overcooling, 2–3 % of compressor energy per °C, 27.5 p/kWh #modelled-energy-example | The assumptions behind the worked example on the home page and the energy solution page. They are Tempa’s own assumptions for an illustration, not a customer result and not a market statistic. Modelled example; labelled as such wherever it appears. | 3 Nov 2026 |
Hardware and list prices
| Figure | What it is | Source | Accessed |
|---|---|---|---|
Tempa pilot kit, hardware cost about £470 including UK VAT (about €448 ex VAT) #parts-pilot-kit | One indoor gateway, four probe sensors, one door sensor and one current converter with clamps, at EU distributor list prices. Sum of list prices at the time of checking; estates are quoted. | 3 Nov 2026 | |
Probe sensor specification ±0.5 °C typical; over 3,000 timestamped records stored on the device #sensor-lht65n | Manufacturer specification of the Dragino LHT65N temperature and humidity sensor with an external probe. | 3 Nov 2026 | |
EcoFlow Delta Pro 3 £2,799 including VAT; 4.1 kWh LiFePO4; 10 ms UPS switchover; developer API #parts-ecoflow-delta-pro-3 | Portable battery with UPS mode, list price at a UK retailer. | 3 Nov 2026 | |
Victron MultiPlus-II 48/3000 £455 ex VAT #parts-victron-multiplus | Inverter-charger with open Modbus, MQTT and VRM access, list price at a UK retailer. | 3 Nov 2026 | |
Pylontech US5000 £1,266 including VAT; 4.8 kWh #parts-pylontech-us5000 | Lithium battery module, list price at a UK retailer. | 3 Nov 2026 | |
Victron Cerbo GX £203 #parts-cerbo-gx | System controller for Victron equipment, list price at a UK retailer. | 3 Nov 2026 | |
Milesight CT101 current transformer £72 #parts-ct101 | LoRaWAN current transformer for generator run detection, list price at a UK distributor. | 3 Nov 2026 | |
Dragino LDDS75 distance sensor €76 #parts-ldds75 | LoRaWAN ultrasonic level sensor for fuel tanks, list price at an EU distributor. | 3 Nov 2026 | |
Tekelek TEK 766 level sensor €177 #parts-tek766 | LoRaWAN level sensor for fuel and water tanks, list price at an EU distributor. | 3 Nov 2026 |
Companies in the same ladder
| Figure | What it is | Source | Accessed |
|---|---|---|---|
Checkit plc FY26 revenue £13.7m; ARR £14.3m; formal sale process since 26 March 2026 #checkit | Regulatory news from the UK-listed monitoring company with NHS customers. Link is to the RNS service; search for Checkit plc. | 3 Nov 2026 | |
Eupry Series A over DKK 170m (about €23M), December 2024 #eupry | Investment in the Danish compliance-monitoring company. | 3 Nov 2026 | |
GlacierGrid (formerly Therma) $19M Series A announced 7 February 2023; over 5,000 locations (September 2026); a $20/month subscription with 4G included; a “save 10 %” claim backed by a savings guarantee estimated under IPMVP #glaciergrid | The US refrigeration monitoring and control company’s funding, scale and public pricing. The partnership release is linked at the publisher’s site; search for GlacierGrid and Scription. | 3 Nov 2026 |
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