AI Electricity Demand Index
Forecast GB data-centre electricity demand in 2050
62 TWh per year
UK AI Energy Intelligence
Independent UK intelligence on AI, electricity and data centres
Independent, evidence-led intelligence on AI electricity demand, data-centre development and pressure on Britain’s electricity networks.
Independent UK analysis · Every figure sourced, dated and evidence-graded
Latest index evidence
Three measures shaping Britain’s AI energy future
The UK AI Energy Index brings together three independently researched sub-indices covering electricity demand, data-centre growth and grid pressure. Explore the latest sourced indicators and the evidence behind them.
- Current edition
- Baseline edition in development
- Next update
- Date to be confirmed
Open sub-index
Data Centre Growth Index
Colocation data-centre IT capacity - London
1,048 MW
Grid Pressure Index
Total contracted connection demand in the GB queue
125 GW
Get UK AI Energy Index updates
Emails cover new index editions, material indicator changes, significant data-centre and grid developments, and updates to the methodology or source register.
Analysis & research
Latest analysis and research
AI Electricity Demand20 Jul 2026
Could AI Use More Energy Than It Saves in the UK?
AI can reduce wasted energy in buildings, factories, transport and the electricity grid. However, rapidly expanding data-centre demand could consume those savings. The answer depends on how Britain chooses to use and power AI.
AI Electricity Demand20 Jul 2026
How Many Data Centres in the UK Are There Devouring Energy?
The UK has around 500 to 600 operational data centres, but their size and electricity consumption vary enormously. Discover how AI infrastructure could reshape Britain's energy system.
Data Centres20 Jul 2026
Will AI Data Centres Change House Prices in the UK?
AI data centres are reshaping Britain's infrastructure landscape. Explore how they could raise — or lower — UK house prices between 2026 and 2035.
Business & Efficiency20 Jul 2026
How Are Supermarkets Using AI to Save Electricity?
Discover how supermarkets use AI to reduce refrigeration, lighting, heating and electricity costs while maintaining food safety and customer comfort.
Intelligence hubs
Explore by research area
Cost, infrastructure and business impact — each hub gathers the calculators and analysis for that question.
Energy Cost Hub
Understand the real electricity cost of AI
- AI Electricity Cost Calculator
- AI Search Cost Calculator
- AI Model Training Cost Calculator
Infrastructure Hub
How AI reshapes the UK electricity network
- AI Grid Impact Forecast Tool
- AI Growth Zone Impact Calculator
- Data Centre Demand Calculator
Business Hub
Evaluate AI investment against energy costs
- AI ROI Calculator
- AI Energy Savings Calculator
- AI Readiness Assessment
Tools
AI energy tools and calculators
AI Electricity Cost Calculator
Estimate the daily, monthly and annual electricity and cost of your AI prompts.
Open toolAI Grid Impact Forecast Tool
Project regional demand growth, infrastructure needs and grid stress from AI.
Open toolAI ROI Calculator
Calculate annual ROI, payback period and net benefit of AI investment.
Open toolNews
UK AI energy news
AI Infrastructuredatacenterdynamics.com27 Aug 2026
Nano Nuclear partners with Tillman Digital to deploy micro nuclear reactors at US AI data centers - DCD
Micro Nuclear Reactors for US AI Data Centres: Implications for UK Energy Strategy
Data centres drive Ireland to reopen nuclear power debate
AI Infrastructureft.com27 Aug 2026
Digital cities: the future of Britain’s data centres
AI Infrastructurethetimes.com27 Aug 2026
Two planned datacentres will have higher UK carbon emissions than ExxonMobil, analysis finds | Datacentres - UK | The Guardian
AI Infrastructuretheguardian.com27 Aug 2026
AI Energy Intelligence UK
Data centres and the UK National Accounts - Office for National Statistics
AI Infrastructureons.gov.uk25 Aug 2026
Reports
UK AI energy reports
AI Energy Intelligence UK
Infrastructure
UK AI Infrastructure Investment Report 2026
2026 · v1.0Free
Free report
UK AI Infrastructure Investment Report 2026
A comprehensive briefing for investors and executives on UK AI infrastructure capital deployment — covering data centres, energy generation, battery storage, grid upgrades, substations and nuclear projects to 2030.
13 Jul 2026 · 22 pages · v1.0
AI Energy Intelligence UK
Business AI
AI & Energy Crisis: UK Power Demand Forecast 2026
2026 · v1.0Free
Free report
AI & Energy Crisis: UK Power Demand Forecast 2026
A comprehensive analysis of AI-driven electricity demand across the United Kingdom — from current consumption baselines to 2040 growth scenarios, grid constraints and the renewable generation required to power the nation's AI ambitions.
13 Jul 2026 · 12 pages · v1.0
AI Energy Intelligence UK
Business AI
The Business Guide to AI Energy Costs 2026
2026 · v1.0Free
Free report
The Business Guide to AI Energy Costs 2026
A practical, costed framework for understanding what AI tools really cost to run — built for UK SMEs, IT managers and business owners who need clarity on energy, infrastructure and ROI.
13 Jul 2026 · 12 pages · v1.0
Data centres
UK data-centre tracker
A sourced register of UK data-centre and AI infrastructure projects — operators, locations, planning status and stated capacity, with a citation on every entry.
33 published project records in the register.