Johor data centre power: RM30 billion of financing against a nodal grid constraint

On 13 October 2026 DayOne Data Centres secured an additional RM15 billion, about US$3.7 billion, from a consortium of seven banks, doubling the financing arranged for its Johor platform to RM30 billion. The lenders are CIMB, Crédit Agricole CIB, DBS, Maybank, OCBC, Standard Chartered and UOB, in a US$2.4 billion offshore term loan and a RM5.5 billion Murabahah facility.

That is a capital milestone. It is not a megawatt milestone, and in Johor the two now sit in different queues. This piece sets out what has already been committed on the electricity side, where the constraint actually binds, and the one instrument that does not exist. Figures verified as at 13 October 2026.

How much data centre load has Malaysia already committed to?

The most authoritative number here is not a consultancy forecast. It is a written parliamentary answer. On 6 July 2026 the Ministry of Energy Transition and Water Transformation (PETRA) told Parliament that TNB had supplied 36 operating data centres with a planned supply capacity of about 4.5 GW through the first quarter of 2026, with a further 23 projects under construction carrying 3.8 GW of maximum demand.

Set that against the system. Peninsular peak demand is 21.3 GW in 2026, projected to reach 33.5 GW by 2035 under JPPPET No 1/2026. Data centres account for about 7% of demand now, rising to as much as 31% by 2035, or 73,274 GWh. TNB has RM43 billion of capital expenditure allocated under the Incentive-Based Regulation framework for RP4, covering 2025 to 2027.

So roughly 8.3 GW of data centre supply is committed or under construction against a 21.3 GW system peak. The national question is not whether that is a big number. It is where it lands.

Why Johor is the specific problem

Wood Mackenzie put numbers on the concentration in a release dated 18 June 2026.

Johor	Figure
Data centre maximum demand	~3.8 GW
The current electricity demand of the state	~2.6 GW
Installed generation capacity	~6.8 GW, mainly gas and coal
Share of Peninsular data centre maximum demand	~51%
Data centres as a share of state end-user consumption	~24% today, ~40% by 2035
Coal expected to retire	~2.1 GW, mid-2030s
Cumulative hyperscaler and technology investment	MYR165 billion (US$42 billion)

The arithmetic worth sitting with: data centre maximum demand in Johor is about 1.5 times the entire current electricity demand of the state. Add the two together and you get roughly 6.4 GW against about 6.8 GW of installed capacity, before any coal retires. And just over half of all data centre demand in Peninsular Malaysia is landing in one state.

The constraint is nodal, not national

This is the part that gets misread. Transmission and distribution utilisation in Johor is about 30%, which sounds like ample headroom. It is not, because the load is not spread across the state. It is concentrated in Sedenak Tech Park and Nusajaya Tech Park, and the binding limits are a shortage of 132 kV main intake substations and a limited number of suitable nodal injection points for renewable integration. The remedy being pointed at is 275 kV connections with on-site substations.

Wood Mackenzie research analyst Alvin Tan framed it as a question of “where power is available rather than whether it is available”.

For a developer, that means the RM30 billion and the grid connection are two different queues, and the second one is governed by substation lead times rather than by capital availability.

Where storage sits, and the instrument that does not exist

Two facts place storage squarely in the middle of this.

First, CRESS is already the data centre instrument. As of June 2025, 1.3 GW of CRESS agreements had been signed in Peninsular Malaysia, and Wood Mackenzie reports all of them linked to Johor data centre projects. On 18 September 2026 PETRA cut the System Access Charge for firm green supply to 14 sen/kWh, against 40 sen for non-firm under the 4th Regulatory Period schedule. Storage is what moves a project into the cheaper band; we set out that arithmetic, and its caveats, in the CRESS acceleration package and the case for storage.

Second, the Southern Johor Renewable Energy Corridor, with planned developments in Mersing and Kota Tinggi, could add up to 4 GWp of solar with battery storage.

So storage has a route into Johor. What it does not have is a route to be paid for the thing Johor actually needs.

Malaysia has four published procurement routes for battery storage, and in each one the battery is paid as contracted capacity under MyBeST, as a condition of an LSS6 solar award, as access to the cheaper CRESS band, or as a capital allowance under GITA. None of them pays a battery for supporting a specific network node. The published remedies for the Johor bottleneck are network assets — 275 kV connections, main intake substations — which sit inside the regulated capital expenditure of the utility, not inside any merchant or contracted storage product. The four routes, and what each one actually pays for, are set out in battery energy storage procurement in Malaysia.

That is the gap to watch. A battery sited at a constrained load pocket to defer or de-risk a substation has, as at 13 October 2026, no instrument under which to earn.

Who can actually do the work locally

One practical note for anyone sizing this from outside Malaysia. The studies and testing that a constrained connection or a storage installation requires are available domestically. TNB Labs publicly describes end-to-end BESS services covering land assessment, grid planning, testing, commissioning and lifetime maintenance, and references a Virtual Power Plant at UNITEN. TNB Research, its parent, positions its work across the electricity value chain and serves industry and ASEAN as well as the utility itself.

For a developer who has financing but no local technical partner, that is the first call rather than the last.

Three things to watch

NewGen26. The Energy Commission is running an open bidding programme for new gas-fired generation with commercial operation scheduled between 2029 and 2031; bids were due on 1 July 2026. Wood Mackenzie sizes the round at 6 to 8 GW and calls it critical for long-term reliability. The notice from the Commission itself does not state a capacity figure.

Coal retirement. About 2.1 GW in Johor is expected to retire in the mid-2030s, in the same decade data centres are projected to reach around 40% of state consumption.

LSS6. Bids for the hybrid packages closed on 7 August 2026 and no award had been published as at 13 October 2026, so the 1,250 MW / 6,000 MWh of mandated storage has no owners yet. Award status for every ASEAN programme is tracked in BESS tenders in Southeast Asia 2026, and cost benchmarks are in BESS prices in 2026.

Two caveats

The 4.2 to 6.1 GW national data centre capacity range by 2030, cited in coverage of the DayOne financing, is a Crédit Agricole CIB forecast, not installed capacity. Treat it as such.

DayOne has not published an IT load or MW figure for its Johor facilities. The RM30 billion is a financing arrangement, not a capacity disclosure, and the two should not be converted into each other.

Sources

Fact	Source	Date
RM15 billion additional financing, US$3.7 billion, seven named banks, US$2.4bn offshore term loan and RM5.5bn Murabahah, RM30 billion total	Trade coverage of the DayOne announcement	2026-10-13
36 operating data centres and ~4.5 GW planned supply through 1Q2026; 23 under construction at 3.8 GW; 7% rising to 31% of demand by 2035; peak 21.3 GW rising to 33.5 GW; RM43bn RP4 capital expenditure	PETRA written answer to Parliament, reported by The Edge Malaysia	2026-07-06
Johor 3.8 GW data centre demand, 2.6 GW state demand, 6.8 GW installed, 51% share, 24% rising to 40% of consumption, 2.1 GW coal retirement, 30% network utilisation, 132 kV substation shortage, 1.3 GW CRESS signed, 4 GWp Southern Johor corridor, MYR165bn investment	Wood Mackenzie, Powering Johor Data Centre Boom	2026-06-18
NewGen26 gas tender, commercial operation 2029 to 2031, bids due 1 July 2026	Energy Commission (Suruhanjaya Tenaga), RFP notice	2026-03
CRESS System Access Charge 14 sen/kWh firm, 40 sen non-firm	See our CRESS analysis	2026-09-18
BESS land assessment, grid planning, testing, commissioning and lifetime maintenance; Virtual Power Plant at UNITEN	TNB Labs	2025-01-01

Verified as at 13 October 2026. Data centre commitments, network plans and tariff bands in Malaysia change on published schedules and on regulatory cycles; check the position at the date you are modelling.