Data centers now consume roughly 4.4% of all electricity used in the United States, about 183 terawatt-hours a year, and global data center demand is on track to more than double by the end of the decade. Artificial intelligence is the main driver: AI servers draw far more power per rack than the machines they replace, and that appetite is reshaping how much energy digital infrastructure needs. The statistics below break down where that power goes, how fast it is growing, and what rising demand means for the businesses that depend on it.
Key Takeaways
- U.S. data centers use about 4.4% of national electricity and are projected to reach as much as 9% by 2030 as AI workloads scale.
- Global data center electricity demand is set to more than double to around 945 terawatt-hours by 2030, growing about 15% a year, more than four times faster than overall electricity demand.
- AI is the swing factor: accelerated servers built for AI account for nearly half of the projected net increase in data center electricity use.
- Servers, not cooling, dominate the load. Computing hardware draws about 60% of a facility’s power, while cooling ranges from 7% in efficient hyperscale sites to over 30% in older enterprise rooms.
- Efficiency varies widely. The best hyperscale facilities run at a power usage effectiveness of 1.09, far below typical enterprise data centers.
U.S. Data Center Energy Consumption
The United States hosts the largest share of the world’s data center capacity, so national power figures set the tone for the whole industry.
- 1. U.S. data centers consumed about 183 terawatt-hours of electricity, roughly 4.4% of the country’s total, according to the U.S. Department of Energy. The MIT Energy Initiative reports the same share, noting data centers used more than 4% of U.S. electricity in 2023.
- 2. That share could reach 9% of U.S. electricity by 2030, more than double the current level, per the MIT Energy Initiative. A single hyperscale facility can draw as much electricity as 50,000 homes.
- 3. U.S. data center electricity use is projected to grow 133% to 426 terawatt-hours by 2030, according to the Pew Research Center.
- 4. A single AI-focused hyperscaler uses as much electricity in a year as 100,000 households, the Pew Research Center found, which shows how concentrated the new demand has become.
For a state-by-state view of where these facilities cluster, see the data center location breakdown.
Global Data Center Energy Consumption
Worldwide, data centers already rival the electricity use of mid-sized countries, and the trajectory is steep.
- 5. Global data center electricity consumption reached about 415 terawatt-hours in 2024, roughly 1.5% of the world’s electricity, according to the International Energy Agency.
- 6. Data centers consumed around 485 terawatt-hours of electricity worldwide in 2025, per Our World in Data, a jump that reflects the early wave of AI buildout.
- 7. Global data center electricity demand is projected to more than double to about 945 terawatt-hours by 2030, the International Energy Agency estimates in its base case, up from about 415 terawatt-hours in 2024.
- 8. From 2024 to 2030, data center electricity use is growing about 15% a year, more than four times faster than overall electricity demand, according to the International Energy Agency.
How AI Is Driving Data Center Energy Demand
Artificial intelligence is the single biggest reason data center power demand has broken from its historical trend. The physical mechanism is rack density: AI hardware packs far more power into the same footprint.
- 9. Accelerated servers built for AI account for almost half of the net increase in data center electricity consumption, while conventional servers make up only about 20%, the International Energy Agency reports.
- 10. AI servers require two to four times as many watts to run as traditional servers, according to the Pew Research Center.
- 11. AI-focused data centers use around 60 kilowatts of electricity per server rack, versus about 10 kilowatts for a general-purpose rack, per Wikipedia’s overview of AI data centers.
- 12. A single NVIDIA GB200 NVL72 rack is likely to require about 120 kilowatts, Sunbird DCIM estimates, roughly twelve times a conventional rack. Densities like this make power and cooling capacity the first constraint in any data center cabling design.
Where Data Centers Use Energy and How Efficient They Are
Not all data center power runs the servers. Understanding the split between computing and overhead is what separates an efficient facility from a wasteful one.
- 13. Servers account for about 60% of the electricity demand in a modern data center, the International Energy Agency reports, making computing hardware the largest single load.
- 14. Cooling ranges from about 7% of total consumption in efficient hyperscale facilities to over 30% in less-efficient enterprise data centers, according to the International Energy Agency.
- 15. Storage systems account for around 5% of a data center’s electricity consumption, per the International Energy Agency, with networking equipment making up much of the remainder.
- 16. The most efficient hyperscale operators run at a power usage effectiveness of 1.09, using 83% less overhead energy than the industry average, Google reports for its 2025 fleet. Power usage effectiveness measures total facility power divided by the power that reaches the IT equipment, so a score near 1.0 means almost no waste.
Energy Costs, Grid Strain, and Emissions
Rising consumption lands on local power grids and, increasingly, on consumer utility bills.
- 17. Data center growth could raise the average U.S. electricity bill by 8% by 2030, and by more than 25% in the highest-demand markets of central and northern Virginia, the Pew Research Center reports.
- 18. Northern Virginia is the largest data center market in the world, holding 13% of all reported data center operational capacity globally and 25% of capacity in the Americas, according to a Virginia JLARC study summarized by the Weldon Cooper Center.
- 19. The United States hosts more than 5,000 data centers, more than any other country, the MIT Energy Initiative reports, which concentrates energy demand in a handful of regional grids.
- 20. Data centers produced about 208 million tons of carbon dioxide in 2025, and that figure is projected to reach roughly 440 million tons by 2030, according to PBS NewsHour. Cooling also carries a water cost, detailed separately in these data center water usage statistics.
The capital behind this expansion is enormous: Fortune reports that data centers could require $6.7 trillion worldwide by 2030. For the market and construction side of that spend, see the data center growth statistics.
What Rising Data Center Energy Use Means for Your Network Infrastructure
Power density is now the design starting point for any facility that supports serious compute, not an afterthought. When a single AI rack can pull 120 kilowatts, the cabling, distribution, and cooling pathways have to be planned before the equipment ships. Undersized infrastructure forces expensive retrofits or caps how much capacity a room can ever hold.
We are The Network Installers, and we design and install commercial network cabling and infrastructure for businesses and government agencies nationwide. Our teams handle high-density fiber and copper runs, structured cabling, and the power and pathway planning that data-heavy environments demand. Two resources help teams scope a project realistically:
- Our data center cabling guide covers backbone design, redundancy, and how rising rack densities change layout decisions.
- Our structured cabling pricing breakdown explains what drives cost per drop so budgets hold up.
We built The Network Installers to be one contractor for infrastructure across every site, with consistent standards whether a project spans a single building or a nationwide footprint. Our structured cabling services support commercial, education, healthcare, and government facilities planning for growth.
Frequently Asked Questions
How much energy do data centers consume?
Data centers consumed about 415 terawatt-hours of electricity globally in 2024, roughly 1.5% of the world’s total, and around 183 terawatt-hours in the United States, about 4.4% of national use. Global demand is projected to more than double to about 945 terawatt-hours by 2030 as AI workloads expand.
Does the U.S. have enough electricity for data centers?
Supply is tightening in the densest markets. U.S. data center electricity use is projected to grow 133% to 426 terawatt-hours by 2030, and in hubs like northern Virginia the concentration of facilities is straining regional grids. Utilities in these regions are working to add generation and transmission to keep pace, but timing and grid capacity have become the main constraints on new data center development.
How are data centers affecting electricity bills?
Data center growth is expected to raise the average U.S. electricity bill by about 8% by 2030, and by more than 25% in the highest-demand markets of central and northern Virginia, according to the Pew Research Center. The effect is largest where facilities cluster on a shared regional grid.
Are data centers getting more energy efficient?
Per-facility efficiency has improved sharply. The best hyperscale operators now run at a power usage effectiveness of 1.09, using 83% less overhead energy than the industry average, and servers claim about 60% of a modern facility’s power. Total consumption is still rising, though, because the volume of computing, especially AI, is growing faster than efficiency gains.
The Bottom Line
Data center energy consumption has moved from a niche facilities metric to a national infrastructure story. The United States already devotes about 4.4% of its electricity to data centers, global demand is more than doubling, and AI is pushing rack densities and power needs to levels that make careful infrastructure planning non-negotiable. For businesses evaluating on-premises, colocation, or new construction, the practical takeaway is that power and pathway capacity should lead the design, not follow it.
As a commercial network cabling installer working across the country, The Network Installers helps IT and facilities teams build infrastructure that can carry rising density without a costly rebuild. If you are planning a data-heavy buildout, get in touch to scope the cabling and pathway design.
Sources
- U.S. Department of Energy: Clean Energy Resources to Meet Data Center Electricity Demand
- MIT Energy Initiative: Data Center Power Demand
- Pew Research Center: What We Know About Energy Use at U.S. Data Centers Amid the AI Boom
- International Energy Agency: Energy Demand from AI
- Our World in Data: How Much Energy Do Data Centers and Artificial Intelligence Use?
- Sunbird DCIM: Is Your Data Center Ready for the NVIDIA GB200 NVL72?
- Google Data Centers: Efficiency
- Weldon Cooper Center for Public Service: JLARC Report on Data Centers in Virginia
- PBS NewsHour: Energy, Water Use and Pollution of AI and Data Centers Rival Most Countries
- Fortune: Data Centers Are Eating the Economy
