Energy is a data centre's largest operating cost and, increasingly, a condition of approval. By 2026, government policy expects new Australian data centres to bring new renewable generation and storage with them, not just buy power from the grid. Victoria requires it for new applications from September 2026. NSW requires data centres to fund additional energy supply. The AEMC has recommended certificate and firming obligations. Energy developers, retailers, advisers and network contractors now sit on the critical path of data centre projects.
For electrical construction inside the site, see electrical contractors. For power policy and demand, see data centre power in Australia.
The Role of Energy Suppliers in Data Centres
| Service | What it involves |
|---|---|
| Grid connection advisory | Connection applications, capacity studies, negotiation with network businesses |
| Transmission and substation works | Network-side works to connect large loads; funded by data centres under Transgrid's approach in Sydney |
| Power purchase agreements | Long-term contracts with wind, solar and hybrid projects |
| Retail supply | Electricity retail contracts, often paired with PPAs |
| Renewable generation development | New solar and wind projects contracted by data centre buyers |
| Storage | Co-located or on-site batteries for firming and resilience |
| Energy procurement advisory | Structuring PPAs, managing price and volume risk, certificate accounting |
| On-site and off-grid generation | Behind-the-meter solar, gas or hybrid systems for remote sites |
Key Infrastructure Requirements
Grid connection
Transgrid's Network Capacity Allocation Policy (from 14 August 2026, for loads of 30 MW or more) allocates capacity only at signed connection agreements and requires proof of project progress. Connection strategy is now a core part of site selection.
Renewable matching
- Victoria (Sept 2026): new data centres must offset actual operational electricity use by investing in new renewable generation and storage. Compliance, verification and firming details will be finalised alongside Commonwealth standards (Hall & Wilcox).
- AEMC (Aug 2026): recommends renewable certificates through REGO and firming capacity contracts for large data centres.
- Federal: legislation for a national framework is expected in early 2027.
Firming
A data centre's load is flat and constant, while solar and wind output varies. Firming (storage, dispatchable generation or contracts) turns variable renewable output into a supply profile that matches the load. Eight of Amazon's nine April 2026 PPAs include co-located batteries.
Transmission and substations
Large campuses need their own substations and often network upgrades. Transgrid's proposed South Creek substation could add about 2 GW in Western Sydney.
Australian Examples
| Buyer | Deal | Detail |
|---|---|---|
| Amazon | 9 PPAs, 430 MW, Apr 2026 | NSW and VIC. Counterparties include OX2 (Muswellbrook), X-ELIO (Forest Glen), Anza (several sites), TagEnergy (Golden Plains 2 wind, 201.8 MW) and European Energy (Mokoan battery) |
| Origin Energy | Tolling of Supernode battery Stage 1 | 260 MW / 619 MWh, Brisbane |
| Firmus | Southgate programme | Aims to support up to 5.1 GW of new renewable generation |
| Project Meridien | Off-grid supply | Wind, solar, batteries and gas |
Source for Amazon: Energy-Storage.news.
Australian Energy Suppliers
Directory listings for this category are being verified before they are published. Supply to data centre projects? Add your company to be considered.
Selecting a Supplier
- A track record of connecting large loads or generators in the relevant network (NEM region or WEM)
- PPA structures that meet the emerging certificate and firming rules
- Project delivery risk: a developer's record of reaching financial close and commercial operation
- Additionality: can the supplier show the generation is new, as Victorian and federal expectations require?
- Accounting and reporting support for customers' emissions disclosures
Current Project Demand
AEMO's 2026 ESOO forecasts NEM data centre consumption rising from about 5 TWh to 34 TWh by 2035-36. Meeting new-generation expectations for that growth means a large pipeline of PPAs and storage contracts. Firmus's stated 5.1 GW target and Amazon's first solar-plus-storage PPAs are early examples.
Relevant Data Centre Projects
Data centre power in Australia · BESS · All projects
List Your Company
Grow Your Data Centre Pipeline
Data centre developers are becoming some of Australia's largest energy buyers. AISB helps energy developers, retailers and advisers reach them while supply strategies are still being decided.
See something that needs updating? Submit a correction.
