Johor's AI data center race is really a power procurement race — and TNB is holding the cards

TM Nxera, the joint venture between Telekom Malaysia and Singtel's data center arm Nxera, has signed a long-term electricity supply agreement with national utility Tenaga Nasional Berhad (TNB) for 280 MW of power — enough to underpin the first phases of its AI-ready campus in Iskandar Puteri, Johor, designed for roughly 200 MW of IT capacity at completion. The agreement, formalized in January 2026, follows the pattern that has come to define Southeast Asia's fastest-growing data center market: in Johor, securing power is the project.

The campus itself is engineered around the demands of AI workloads — Tier-3 design, liquid cooling for high-density racks, LEED-targeted efficiency standards, and international connectivity via TM and Singtel's subsea cable networks. Phase 1 is scheduled to begin commercial operations in 2026. But what separates winners from announcements in Johor is the signed electricity supply agreement. Power availability has become the binding constraint on Malaysia's data center boom, and TNB — the sole supplier in Peninsular Malaysia — has moved to manage the queue through initiatives like its Green Lane Pathway and One-Stop Centre for fast-tracking connections.

The TNB ledger shows how quickly commitments are stacking up: aside from TM Nxera's 280 MW, the utility has reportedly signed a 500 MW solar supply agreement with data center operator DayOne and a 400 MW electricity supply pact with Bridge Data Centres in recent months (as reported by Data Center Dynamics; to be re-verified against primary releases). In April 2026, Singapore-headquartered carrier-neutral operator Racks Central signed an ESA with TNB for the first 100 MW phase of its own Johor AI campus, with renewable procurement MoUs layered on top. And in March, Chinese operator ZDATA's Malaysian subsidiary CTDC signed a green energy term sheet with BGMC and reNIKOLA targeting some 630,000 MWh a year of solar power for its Gelang Patah AI data center from 2028 — plus a water-independence program that takes its cooling off the municipal grid entirely.

The strategic geography is Johor-Singapore: the Special Economic Zone pairs Singapore's connectivity and customer base with Malaysian land and — critically — power headroom that the island republic no longer has. The result is a market where a hyperscaler's site decision is, in practice, a decision about whose name is on the electricity supply agreement.

For energy suppliers, Johor in 2026 is the clearest example anywhere of AI demand pulling power infrastructure: utility-scale grid connections, behind-the-meter solar, and increasingly the transformers, switchgear and cooling plant that turn signed megawatts into delivered ones.