Uralla’s main street doesn’t look like the centre of a 8GW renewable energy zone, and that’s rather the point. You drive out past the showground, past the turnoff to Bundarra, and the hills roll on looking much as they have for a century, until you spot a line of turbine blades stacked on low-loaders at the side of the New England Highway, waiting for an escort permit. That’s the New England Renewable Energy Zone in one image: the hardware is arriving faster than the wires are getting built to carry it away.
The New England REZ covers a broad band of the state’s northern tablelands, declared under the NSW Electricity Infrastructure Roadmap, and it’s meant to host something in the order of 8 gigawatts of wind, solar and storage once fully built out. That number gets quoted a lot. It’s a planning ceiling, not a construction tally, and conflating the two is how you end up writing a press release instead of a status report.
What’s actually energised versus what’s approved
Start with what’s spinning. ACEN Australia’s New England Solar Farm, out near Uralla and Bundarra, is the zone’s most advanced large-scale asset, built in stages with a combined capacity north of 700 megawatts of solar plus a battery component. I’ve covered ACEN’s build-out before – see our earlier profile of ACEN Australia and the Philippines-backed builder behind New England Solar, and the short update is that stage two has continued to energise in sections through the past year, which is normal for a project of this scale but still means the zone’s flagship solar asset isn’t fully at capacity.
Wind is a different story and a slower one. There are multiple wind proposals through the NSW planning system in the broader New England corridor: around Walcha, Nundle, and further north toward Glen Innes, but a chunk of them are still sitting at development application stage or have been knocked back and redesigned after community and biodiversity objections. Winterbourne and Hills of Gold near Nundle and Walcha drew heavy local opposition over visual impact and koala habitat mapping; both went through contested assessment processes that stretched well past the developers’ original timelines. I’d argue the turbine-count figures spruiked in early investor material for this zone were always going to collide with a planning system that takes biodiversity offsets and State Environmental Planning Policy assessment seriously, and that collision has played out roughly as you’d expect.
The transmission constraint that actually sets the pace
None of the generation matters much without the wires to export it, and this is where New England REZ has genuinely lagged. Transgrid is the transmission business responsible for building out the REZ network infrastructure here, under the NSW government’s REZ delivery framework, and the headline project – the New England REZ Transmission Link, running broadly between Tamworth and the zone’s generation clusters toward the Hunter – has moved through stages of community consultation and route refinement that pushed its in-service timing out from what was first flagged when the Electricity Infrastructure Roadmap passed parliament in 2020.
This is the same dynamic I’ve written about with NSW’s coal exit running ahead of its REZ rollout and with the Central-West Orana REZ status check – transmission easements take years to negotiate with landholders, route options get contested at local government level, and the generation queue fills up faster than the poles and wires can follow. New England isn’t unique in this. It’s just a particularly clean example, because the solar is largely done and waiting on wind and storage behind it, while the backbone transmission link is still working through approvals.
AEMO’s Integrated System Plan treats New England as one of the priority REZs for the broader NSW and east-coast transition, which is why the delay matters beyond the local member’s electorate. If the transmission link slips further, generation capacity that’s already financed and under construction simply curtails rather than exports, which is a bad outcome for project returns and a worse one for the reliability modelling AEMO publishes in its Integrated System Plan.
Who else is building here, and who’s circling
ACEN isn’t alone. There’s a cluster of battery storage proposals attached to or near the zone’s substations, reflecting the same logic that’s driven big battery investment elsewhere in NSW – proximity to committed transmission capacity and a connection queue that rewards projects willing to co-locate rather than build standalone lines. Some of this storage interest overlaps with developers active in the Central-West Orana and Illawarra zones too; the playbook of pairing storage with an existing or soon-to-exist grid connection point is now fairly standard across the state, something I touched on when writing about Akaysha Energy’s battery developments at Waratah and Ulinda Park.
Smaller wind proponents have also lodged or refreshed applications in the corridor, betting that the transmission link eventually lands close enough to their project boundary to make the connection cost workable. That’s a reasonable commercial bet if you believe the government’s REZ timeline. It’s a riskier one if you’ve watched how often REZ transmission dates have moved in New South Wales over the past three years.
The koala plan and the planning overlay nobody mentions in the glossy brochure
A fair bit of the friction in this zone traces back to biodiversity mapping, specifically koala habitat corridors identified under state environmental planning instruments covering the Walcha and Tamworth Regional council areas. Developers that didn’t model these constraints early got sent back for redesign, which cost them a construction season or more. It’s not a uniquely New England problem: the Hunter and the New South Wales north coast have run the same fight, but it’s worth naming plainly because it’s the single biggest reason timelines here have blown out versus the original Roadmap schedule, more so than grid connection queues or even landholder negotiation.
Council planning overlays matter here too. Several of the wind proposals sit across more than one local government area, meaning proponents have had to run near-parallel assessment processes with different councils applying slightly different weight to visual and acoustic amenity concerns. That’s not a conspiracy against wind, it’s just how NSW’s planning system is structured, and developers who treated it as a formality rather than a genuine risk have paid for it in delay.
What it’s costing, in terms we can actually verify
Precise capital cost figures for the full zone build-out aren’t published in one place – ACEN doesn’t break out New England Solar’s exact spend publicly beyond broad project financing disclosures, and Transgrid’s REZ transmission costs are subject to ongoing regulatory determination with the AER rather than a single fixed number. What’s public is the direction of travel: transmission costs for REZ links across NSW have tracked upward against original Roadmap estimates, consistent with the pattern documented more broadly in pieces like who really pays for the transmission build-out. New England’s link is part of that same cost conversation playing out at the AER and through Transgrid’s regulatory proposals.
The NSW government’s own Electricity Infrastructure Roadmap documentation, published by the Department of Climate Change, Energy, the Environment and Water, set out the original REZ access scheme design and cost recovery mechanism; anyone wanting the primary source on how REZ network costs get recovered through generator access fees should start with the NSW Government’s Renewable Energy Zones programme page rather than secondary commentary.
Why this particular zone matters beyond its own paddocks
New England sits in a useful spot on the map: close enough to the Hunter to eventually help backfill capacity as coal units at Liddell’s old site and eventually Bayswater step down, and far enough inland to pick up wind resource that behaves differently to the coastal regime further south and east. A zone that pairs solar, wind and storage with genuine diversity of output timing is more valuable to AEMO’s dispatch task than three zones that all produce the same shape of generation at the same time of day, something I’ve gone into in more detail when explaining what a capacity factor is and why it actually matters.
But that value only shows up on the ledger once the transmission link is actually energised and the wind projects currently stuck in assessment get a green light or a final no. Right now the zone is carrying a lot of promise on a foundation that’s roughly half-built. The solar farm works. The transmission backbone doesn’t exist yet in the form the ISP assumes. And a decent slice of the wind capacity that was meant to balance the solar’s midday peak is still sitting in a council planning file somewhere between Walcha and Glen Innes.
What to watch over the next construction season
Three things will tell you whether New England REZ is catching up or falling further behind. First, whether Transgrid locks in a final route and a firm in-service date for the transmission link rather than another “subject to further consultation” update. Second, whether the contested wind proposals around Walcha and Nundle get determined one way or the other this financial year, because half-approved projects sitting in limbo help nobody’s investment case. Third, whether ACEN or another proponent announces a battery addition sized to actually shift New England Solar’s output into the evening peak, rather than the smaller firming capacity currently attached.
I’ll keep checking the DA register and the Transgrid project updates rather than taking the zone’s indicative capacity figure at face value. Out this way the paddocks are patient. The connection queue isn’t, and neither, frankly, is the coal fleet it’s meant to be replacing.
– Callum Hayes, Wind & Offshore Correspondent
Photo by Peter Beukema on Unsplash