Crane Index™ Research › AI Readability 2026 › Energy and Utilities
Crane Index™ · Annual edition
UK Energy and Utilities AI Readability 2026
As of 1 October 2026, the median UK energy and utilities site scored 42 out of 100 on the Crane Index™, the measure of how readably a site presents itself to AI engines. Across the 120 sites a machine could read, scores ran from 20 to 78, a 58-point gap between the strongest and the weakest.
What this measures. The score reads how readably a site presents itself to AI engines: entity markup, structured data and machine resolvability. It is not a measure of design, brand or quality. A site can look excellent to a person and still be hard for a machine to read, and a low score is a readability finding, never a judgement on the business.
The field in 2026
The field was led by OVO Energy at 78, with Octopus Energy next at 74. 5 sites cleared 70 out of 100, and 42 scored below 40.
At the foot of the field sat Xcel Energy at 20, Public Service Enterprise Group at 20, Affinity Water at 24. Each is a site a machine struggled to read, not a business doing anything other than well at what it does.
The full 2026 ranking
Composite out of 100, with the three reads behind it: AI Search Readiness (retrieval), Agent Readiness (execution) and Brand Representation.
| Rank | Organisation | Crane Index | Search | Agent | Brand |
|---|---|---|---|---|---|
| 1 | OVO Energyovoenergy.com | 78 | 91 | 97 | 46 |
| 2 | Octopus Energyoctopus.energy | 74 | 75 | 86 | 61 |
| 3= | Bloom Energybloomenergy.com | 72 | 79 | 90 | 46 |
| 3= | Repsolrepsol.com/es/index.cshtml | 72 | 78 | 83 | 56 |
| 5 | Sunrunsunrun.com | 71 | 85 | 63 | 64 |
| 6= | BWX Technologiesbwxt.com | 69 | 83 | 91 | 32 |
| 6= | Entergyentergy.com | 69 | 72 | 87 | 48 |
| 8 | Phillips 66phillips66.com | 68 | 74 | 87 | 42 |
| 9 | AES Corporationaes.com | 67 | 72 | 69 | 59 |
| 10 | ExxonMobilcorporate.exxonmobil.com | 65 | 68 | 68 | 58 |
| 11 | Southern Companysoutherncompany.com | 63 | 69 | 68 | 52 |
| 12= | Saudi Aramcoaramco.com | 62 | 71 | 70 | 46 |
| 12= | Williams Companieswilliams.com | 62 | 69 | 89 | 28 |
| 14= | Prysmianprysmian.com/en | 61 | 66 | 87 | 30 |
| 14= | SLBslb.com | 61 | 73 | 74 | 36 |
| 16 | Plug Powerplugpower.com | 60 | 68 | 88 | 25 |
| 17= | Constellation Energyconstellationenergy.com | 58 | 65 | 63 | 46 |
| 17= | Schneider Electricse.com/ww/en | 58 | 62 | 55 | 58 |
| 17= | Vestasvestas.com/en | 58 | 61 | 68 | 46 |
| 20 | Good Energygoodenergy.co.uk | 57 | 72 | 87 | 13 |
| 21 | Vistravistracorp.com | 56 | 64 | 83 | 21 |
| 22= | Drax Groupdrax.com | 55 | 64 | 88 | 13 |
| 22= | Engieengie.com | 55 | 60 | 82 | 23 |
| 22= | OMVomv.com/en | 55 | 70 | 63 | 32 |
| 22= | Utilitautilita.co.uk | 55 | 67 | 61 | 37 |
| 26= | ConocoPhillipsconocophillips.com | 54 | 56 | 77 | 28 |
| 26= | Equinorequinor.com | 54 | 65 | 65 | 32 |
| 28= | Northern Gas Networksnortherngasnetworks.co.uk | 53 | 63 | 89 | 8 |
| 28= | Oklooklo.com | 53 | 67 | 59 | 32 |
| 28= | Semprasempra.com | 53 | 61 | 62 | 35 |
| 31= | Baker Hughesbakerhughes.com | 52 | 59 | 69 | 28 |
| 31= | Kinder Morgankindermorgan.com | 52 | 59 | 68 | 28 |
| 31= | Pentairpentair.com | 52 | 51 | 87 | 18 |
| 31= | Tata Powertatapower.com | 52 | 57 | 65 | 35 |
| 35= | Fortumfortum.com | 51 | 66 | 62 | 25 |
| 35= | NuScale Powernuscalepower.com | 51 | 61 | 68 | 25 |
| 35= | Vattenfallgroup.vattenfall.com | 51 | 67 | 68 | 19 |
| 38 | Enieni.com/it-IT/home.html | 50 | 56 | 68 | 25 |
| 39 | Endesaendesa.com | 49 | 57 | 69 | 20 |
| 40 | Cheniere Energycheniere.com | 47 | 54 | 62 | 25 |
| 41= | Aggrekoaggreko.com/en-us | 46 | 61 | 63 | 15 |
| 41= | California Water Servicecalwatergroup.com | 46 | 58 | 56 | 25 |
| 43= | EDFedf.fr | 45 | 61 | 50 | 23 |
| 43= | JinkoSolarjinkosolar.com/en | 45 | 43 | 56 | 36 |
| 43= | Veoliaveolia.com/fr | 45 | 55 | 71 | 8 |
| 46= | Enelenel.com | 43 | 49 | 62 | 19 |
| 46= | FirstEnergyfirstenergycorp.com/fehome.html | 43 | 44 | 65 | 20 |
| 46= | Harbour Energyharbourenergy.com | 43 | 51 | 68 | 10 |
| 46= | Quanta Servicesquantaservices.com | 43 | 47 | 73 | 8 |
| 46= | Serica Energyserica-energy.com | 43 | 49 | 69 | 10 |
| 46= | Wales & West Utilitieswwutilities.co.uk | 43 | 52 | 69 | 8 |
| 46= | Yorkshire Wateryorkshirewater.com | 43 | 53 | 62 | 13 |
| 53= | Cadent Gascadentgas.com | 42 | 56 | 61 | 10 |
| 53= | Camecocameco.com | 42 | 41 | 68 | 18 |
| 53= | PG&Epge.com | 42 | 45 | 69 | 13 |
| 53= | Reliance Industriesril.com | 42 | 44 | 69 | 13 |
| 53= | So Energyso.energy | 42 | 45 | 62 | 20 |
| 53= | TC Energytcenergy.com | 42 | 45 | 68 | 13 |
| 53= | TotalEnergiestotalenergies.com | 42 | 47 | 68 | 10 |
| 53= | Tullow Oiltullowoil.com | 42 | 49 | 69 | 8 |
| 53= | United Utilitiesunitedutilities.com | 42 | 48 | 68 | 10 |
| 53= | Utility Warehouseuw.co.uk | 42 | 52 | 62 | 13 |
| 63= | CenterPoint Energycenterpointenergy.com | 41 | 65 | 30 | 28 |
| 63= | EnBWenbw.com | 41 | 47 | 68 | 8 |
| 63= | ONGCongcindia.com | 41 | 45 | 68 | 10 |
| 63= | RWErwe.com | 41 | 54 | 62 | 8 |
| 63= | SES Waterseswater.co.uk | 41 | 47 | 62 | 13 |
| 63= | SGNsgn.co.uk | 41 | 46 | 69 | 8 |
| 69= | Consolidated Edisonconed.com/en | 40 | 41 | 68 | 10 |
| 69= | Dominion Energydominionenergy.com | 40 | 46 | 62 | 13 |
| 69= | DTE Energydteenergy.com | 40 | 37 | 69 | 13 |
| 69= | Edison Internationaledison.com | 40 | 43 | 68 | 10 |
| 69= | EDPedp.com/en | 40 | 40 | 68 | 13 |
| 69= | EnQuestenquest.com | 40 | 43 | 68 | 8 |
| 69= | GE Vernovagevernova.com | 40 | 46 | 65 | 10 |
| 69= | Hitachi Energyhitachienergy.com | 40 | 47 | 62 | 10 |
| 69= | Petrofacpetrofac.com | 40 | 44 | 68 | 8 |
| 69= | Valero Energyvalero.com | 40 | 43 | 68 | 8 |
| 79= | American Water Worksamwater.com | 39 | 42 | 68 | 8 |
| 79= | Ceres Powerceres.tech | 39 | 39 | 68 | 10 |
| 79= | Ecotricityecotricity.co.uk | 39 | 57 | 51 | 10 |
| 79= | First Solarfirstsolar.com | 39 | 38 | 68 | 10 |
| 79= | ITM Poweritm-power.com | 39 | 45 | 62 | 10 |
| 79= | NextEra Energynexteraenergy.com | 39 | 45 | 62 | 10 |
| 79= | Northumbrian Waternwl.co.uk | 39 | 47 | 56 | 13 |
| 79= | Occidental Petroleumoxy.com | 39 | 38 | 62 | 18 |
| 79= | Petronaspetronas.com | 39 | 43 | 62 | 13 |
| 79= | South Staffs Watersouth-staffs-water.co.uk | 39 | 40 | 68 | 10 |
| 79= | SSEsse.com | 39 | 36 | 68 | 13 |
| 79= | Thames Waterthameswater.co.uk | 39 | 45 | 62 | 10 |
| 79= | Urencourenco.com | 39 | 37 | 68 | 13 |
| 92= | Siemens Energysiemens-energy.com/global/en/home.html | 38 | 45 | 62 | 8 |
| 92= | Uranium Energy Corpuraniumenergy.com | 38 | 40 | 65 | 10 |
| 94= | American Electric Poweraep.com | 37 | 37 | 62 | 13 |
| 94= | APA Groupapa.com.au | 37 | 44 | 58 | 8 |
| 94= | Canadian Natural Resourcescnrl.com | 37 | 36 | 62 | 13 |
| 94= | Enbridgeenbridge.com | 37 | 36 | 63 | 13 |
| 94= | EQT Corporationeqt.com | 37 | 39 | 62 | 10 |
| 94= | Ithaca Energyithacaenergy.com | 37 | 39 | 62 | 10 |
| 100= | Capricorn Energycapricornenergy.com | 36 | 27 | 68 | 13 |
| 100= | National Gasnationalgas.com | 36 | 37 | 62 | 10 |
| 100= | ONEOKoneok.com | 36 | 36 | 63 | 10 |
| 100= | WEC Energy Groupwecenergygroup.com | 36 | 32 | 62 | 13 |
| 104= | Eversource Energyeversource.com/residential | 35 | 39 | 49 | 18 |
| 104= | Galp Energiagalp.com/es | 35 | 42 | 56 | 8 |
| 104= | NOVnov.com | 35 | 34 | 62 | 8 |
| 104= | NTPCntpc.co.in | 35 | 34 | 62 | 10 |
| 104= | Ormat Technologiesormat.com/en/home/a/main | 35 | 34 | 62 | 8 |
| 109= | Enterprise Products Partnersenterpriseproducts.com | 34 | 37 | 56 | 8 |
| 109= | Lukoillukoil.com | 34 | 34 | 56 | 13 |
| 111= | Cenovus Energycenovus.com | 33 | 28 | 62 | 8 |
| 111= | Severn Trentseverntrent.com | 33 | 32 | 59 | 8 |
| 111= | South East Watersoutheastwater.co.uk | 33 | 24 | 62 | 13 |
| 114 | Energy Transferenergytransfer.com | 32 | 24 | 58 | 13 |
| 115= | Enphase Energyenphase.com | 31 | 39 | 46 | 8 |
| 115= | Rosneftrosneft.com | 31 | 31 | 50 | 13 |
| 117 | EOG Resourceseogresources.com | 25 | 17 | 48 | 10 |
| 118 | Affinity Wateraffinitywater.co.uk | 24 | 23 | 34 | 15 |
| 119= | Public Service Enterprise Grouplanding.pseg.com | 20 | 18 | 34 | 8 |
| 119= | Xcel Energymy.xcelenergy.com/s | 20 | 19 | 34 | 8 |
Download this edition: the full field as a spreadsheet (CSV), or the same run as JSON. Licensed CC BY 4.0, so it is yours to publish and build on with attribution. Every unreadable site carries empty score cells, never a zero.
This is the fixed 2026 edition, pinned to the scan measured 1 October 2026, so the figures on it do not change. The live field, re-run on the first of each month, is on the current Energy and Utilities benchmark. For how the score is built, see the methodology.
Licensed CC BY 4.0. Cite as: The Crane Index™, UK Energy and Utilities AI readability 2026, The Crane Consultancy, measured 1 October 2026. https://thecraneconsultancy.com/research/energy-utilities-ai-readability-2026/