# Belgium Data Center Colocation Market > Belgium Data Center Colocation Market: USD 423.23 million in 2026, USD 974.61 million by 2035, 10.96% CAGR from 2025, as grid-ready halls fill. Publisher: DC Market Insights Author: Amit Jain, DC Market Insights Published: 2025-10-14 Last updated: 2026-10-22 Next review: Apr 2027 Page: https://www.dcmarketinsights.com/report/belgium-data-center-colocation-market ## Key takeaways - Grid Rationing Makes Connected Halls Worth More: Elia's Capped Data-Centre Category - Liquid-Cooled Suites at KevlinX and EdgeConneX - A Connection Queue of More Than 180 Companies in Flanders - Wallonia's Grid Headroom: Gembloux and Liège **Frequently Asked Questions** **What is the size of the Belgium Data Center Colocation Market in 2026?** USD 423.23 million in 2026, up 22.86% from USD 344.49 million in 2025, according to DC Market Insights estimates. The market is projected to reach USD 974.61 million by 2035, a CAGR of 10.96% from 2025. **How fast is the Belgium Data Center Colocation Market growing?** 10.96% a year from 2025 to 2035, after 16.07% a year in 2020-2025, because capacity additions slow to about 19 MW a year as Elia caps data-centre grid allocations. **How much does colocation cost per kW in Belgium?** About EUR 315 per kW per month for retail and EUR 175 for wholesale in 2025, all-in with power (DC Market Insights estimate). Power alone is about EUR 139 per sold kW at EUR 0.194 per kWh. **Which colocation type grows fastest in Belgium?** Wholesale Colocation, at 16.09% a year from USD 74.63 million in 2025 to USD 331.70 million in 2035, as cloud and AI tenants lease suites above 1 MW. **Which Belgian region grows fastest in colocation?** Wallonia, at 16.78% a year to USD 146.19 million by 2035, because Gembloux and Liège have more grid headroom than Flanders, where over 180 companies wait for connections. **Who are the leading colocation providers in Belgium?** Digital Realty, LCL Data Centers and Datacenter United hold about 48% of 2025 revenue (DC Market Insights estimate). EdgeConneX, Penta Infra, KevlinX and AtlasEdge follow. **How much colocation capacity does Belgium have?** About 122 MW of live colocation IT capacity at the end of 2025 and 150 MW by the end of 2026, by DC Market Insights estimates, with about 70 MW more secured at Diegem, Antwerp, Zellik and Brussels. **How do grid rules affect Belgian data centers?** Since 29 January 2026, CREG's connection code adds binding deadlines and 'use it or lose it' for reserved capacity, and Elia caps a separate data-centre category, so halls with power already connected gain pricing power. **How is the Belgium colocation market different from the Belgium data center market?** USD 344.49 million in 2025 counts only space sold by third-party operators. The Belgium data center market also counts hyperscale self-builds such as Google's Saint-Ghislain campus and enterprise data centers. **Why do Belgium Data Center Colocation Market estimates differ?** USD 423.23 million in 2026 is the DC Market Insights figure for third-party colocation only. Estimates that add Google's and Microsoft's self-built capacity, cloud services or construction spend are several times larger. ## Dataset | Series | Value | Unit | | --- | --- | --- | | Market size 2025 | 344.49 | USD million | | Revenue CAGR | 10.96 | % | | Market size 2035 | 974.61 | USD million | ## Frequently asked questions ### What is the size of the Belgium Data Center Colocation Market in 2026? USD 423.23 million in 2026, up 22.86% from USD 344.49 million in 2025, according to DC Market Insights estimates. The market is projected to reach USD 974.61 million by 2035, a CAGR of 10.96% from 2025. ### How fast is the Belgium Data Center Colocation Market growing? 10.96% a year from 2025 to 2035, after 16.07% a year in 2020-2025, because capacity additions slow to about 19 MW a year as Elia caps data-centre grid allocations. ### How much does colocation cost per kW in Belgium? About EUR 315 per kW per month for retail and EUR 175 for wholesale in 2025, all-in with power (DC Market Insights estimate). Power alone is about EUR 139 per sold kW at EUR 0.194 per kWh. ### Which colocation type grows fastest in Belgium? Wholesale Colocation, at 16.09% a year from USD 74.63 million in 2025 to USD 331.70 million in 2035, as cloud and AI tenants lease suites above 1 MW. ### Which Belgian region grows fastest in colocation? Wallonia, at 16.78% a year to USD 146.19 million by 2035, because Gembloux and Liège have more grid headroom than Flanders, where over 180 companies wait for connections. ### Who are the leading colocation providers in Belgium? Digital Realty, LCL Data Centers and Datacenter United hold about 48% of 2025 revenue (DC Market Insights estimate). EdgeConneX, Penta Infra, KevlinX and AtlasEdge follow. ### How much colocation capacity does Belgium have? About 122 MW of live colocation IT capacity at the end of 2025 and 150 MW by the end of 2026, by DC Market Insights estimates, with about 70 MW more secured at Diegem, Antwerp, Zellik and Brussels. ### How do grid rules affect Belgian data centers? Since 29 January 2026, CREG's connection code adds binding deadlines and 'use it or lose it' for reserved capacity, and Elia caps a separate data-centre category, so halls with power already connected gain pricing power. ### How is the Belgium colocation market different from the Belgium data center market? USD 344.49 million in 2025 counts only space sold by third-party operators. The Belgium data center market also counts hyperscale self-builds such as Google's Saint-Ghislain campus and enterprise data centers. ### Why do Belgium Data Center Colocation Market estimates differ? USD 423.23 million in 2026 is the DC Market Insights figure for third-party colocation only. Estimates that add Google's and Microsoft's self-built capacity, cloud services or construction spend are several times larger. ## How to cite Data Center Market Research & Consulting | DC Market Insights, "Belgium Data Center Colocation Market", updated 2026-10-22, https://www.dcmarketinsights.com/report/belgium-data-center-colocation-market