# Data Center Grid Infrastructure Interconnection Market > Data center grid interconnection: USD 6.34 billion in 2026, USD 12.76 billion by 2035, 8.97% CAGR from 2025, as large loads pay for grid upgrades. Publisher: DC Market Insights Author: Amit Jain, DC Market Insights Published: 2026-10-30 Last updated: 2026-10-30 Next review: Apr 2027 Page: https://www.dcmarketinsights.com/report/data-center-grid-infrastructure-interconnection-market ## Key takeaways - Texas Senate Bill 6 and ERCOT's 474 GW Large-Load Queue - Commitment Fees and Minimum Bills: GBP 237,500 to 712,500 per MW in Britain - Speculative Requests: 302.2 GW Excluded from ERCOT Batch Zero - Extra-High-Voltage Lines for Gigawatt Campuses: USD 6.25 billion by 2035 **Frequently Asked Questions** **What is the size of the Data Center Grid Infrastructure Interconnection Market in 2026?** USD 6.34 billion in 2026, up 17.32% from USD 5.40 billion in 2025, according to DC Market Insights estimates. The market is projected to reach USD 12.76 billion by 2035, a CAGR of 8.97% from 2025. **How fast is the Data Center Grid Infrastructure Interconnection Market growing?** 8.97% a year from 2025 to 2035, after 26.12% a year from 2020 to 2025, as grid capacity funded each year rises from 18.01 GW to 31.90 GW and cost per MW from USD 0.30 million to USD 0.40 million. **What is data center grid interconnection?** USD 5.40 billion was spent in 2025 on utility-side works that connect data centers to the grid: network upgrades, dedicated high-voltage lines, switching stations and interconnection studies and fees. On-site substations, transformers, generation and electricity are excluded. **How much does a data center grid connection cost per MW?** USD 0.30 million per MW of grid capacity in 2025, rising to USD 0.40 million by 2035, DC Market Insights estimates. SB Energy's USD 4.2 billion of 765 kV lines for a 10 GW Ohio campus equals USD 0.42 million per MW. **How many GW of data centers are waiting for grid connection in Texas?** About 474 GW of large loads were seeking ERCOT interconnection in mid-2026, about 90% data centers. In Batch Zero, 66.4 GW qualified as base load, 127.9 GW as studied load and 302.2 GW was excluded. **Who pays for data center grid upgrades?** Increasingly the data center: customer-funded direct assignment grows 11.87% a year to USD 6.64 billion by 2035, as Texas SB 6, the AEP Ohio tariff and FERC's June 2026 orders move upgrade costs to large loads. **Which segment of the Data Center Grid Infrastructure Interconnection Market grows fastest?** Extra-high-voltage works at 345 kV and above grow fastest at 11.78% a year to USD 6.25 billion by 2035. Among components, dedicated high-voltage lines lead at 10.55%. **Which region leads the Data Center Grid Infrastructure Interconnection Market?** North America, with USD 2.81 billion or 52.00% of 2025 value. The Middle East and Africa grows fastest at 13.48% a year, and India is the fastest large country at 15.14%. **What did Ofgem propose for data center grid connections?** A refundable commitment fee of GBP 237,500 to 712,500 per MW, proposed on 29 July 2026 after demand connection applications in Great Britain rose from 41 GW to 125 GW, at least 80 GW of it data centers. **Why do Data Center Grid Infrastructure Interconnection Market estimates differ?** USD 6.34 billion in 2026 counts only utility-side wires, stations and connection fees. Estimates that add on-site substations, transformers, campus generation, capacity payments or electricity come out several times larger. ## Dataset | Series | Value | Unit | | --- | --- | --- | | Market size 2025 | 5,400 | USD million | | Revenue CAGR | 8.97 | % | | Market size 2035 | 12,760 | USD million | ## Frequently asked questions ### What is the size of the Data Center Grid Infrastructure Interconnection Market in 2026? USD 6.34 billion in 2026, up 17.32% from USD 5.40 billion in 2025, according to DC Market Insights estimates. The market is projected to reach USD 12.76 billion by 2035, a CAGR of 8.97% from 2025. ### How fast is the Data Center Grid Infrastructure Interconnection Market growing? 8.97% a year from 2025 to 2035, after 26.12% a year from 2020 to 2025, as grid capacity funded each year rises from 18.01 GW to 31.90 GW and cost per MW from USD 0.30 million to USD 0.40 million. ### What is data center grid interconnection? USD 5.40 billion was spent in 2025 on utility-side works that connect data centers to the grid: network upgrades, dedicated high-voltage lines, switching stations and interconnection studies and fees. On-site substations, transformers, generation and electricity are excluded. ### How much does a data center grid connection cost per MW? USD 0.30 million per MW of grid capacity in 2025, rising to USD 0.40 million by 2035, DC Market Insights estimates. SB Energy's USD 4.2 billion of 765 kV lines for a 10 GW Ohio campus equals USD 0.42 million per MW. ### How many GW of data centers are waiting for grid connection in Texas? About 474 GW of large loads were seeking ERCOT interconnection in mid-2026, about 90% data centers. In Batch Zero, 66.4 GW qualified as base load, 127.9 GW as studied load and 302.2 GW was excluded. ### Who pays for data center grid upgrades? Increasingly the data center: customer-funded direct assignment grows 11.87% a year to USD 6.64 billion by 2035, as Texas SB 6, the AEP Ohio tariff and FERC's June 2026 orders move upgrade costs to large loads. ### Which segment of the Data Center Grid Infrastructure Interconnection Market grows fastest? Extra-high-voltage works at 345 kV and above grow fastest at 11.78% a year to USD 6.25 billion by 2035. Among components, dedicated high-voltage lines lead at 10.55%. ### Which region leads the Data Center Grid Infrastructure Interconnection Market? North America, with USD 2.81 billion or 52.00% of 2025 value. The Middle East and Africa grows fastest at 13.48% a year, and India is the fastest large country at 15.14%. ### What did Ofgem propose for data center grid connections? A refundable commitment fee of GBP 237,500 to 712,500 per MW, proposed on 29 July 2026 after demand connection applications in Great Britain rose from 41 GW to 125 GW, at least 80 GW of it data centers. ### Why do Data Center Grid Infrastructure Interconnection Market estimates differ? USD 6.34 billion in 2026 counts only utility-side wires, stations and connection fees. Estimates that add on-site substations, transformers, campus generation, capacity payments or electricity come out several times larger. ## How to cite Data Center Market Research & Consulting | DC Market Insights, "Data Center Grid Infrastructure Interconnection Market", updated 2026-10-30, https://www.dcmarketinsights.com/report/data-center-grid-infrastructure-interconnection-market