nsw MARKET UPDATE
New South Wales entered March with noticeably different market conditions compared with earlier in the year. While milder weather has kept daytime demand below summer peak levels, a combination of planned outages, rising evening demand and global fuel cost pressure has created sharper price movements and renewed market focus on reliability.
This month’s key theme has been how renewables, network constraints and supply-side risks interact, particularly as the grid transitions from summer into the cooler season.
Daytime Solar Continues to Suppress Prices
Strong rooftop and utility-scale solar generation has again kept daytime wholesale prices significantly lower than evening levels throughout March. Many trading intervals from late morning through mid‑afternoon have recorded pricing well below what is seen after solar output drops, reinforcing the structural value of load shifting.
Businesses that have shifted energy-intensive operations into these daylight periods are continuing to see tangible cost benefits.
Evening Peaks & Network Constraints
NSW remains one of the more structurally constrained regions in the NEM, and this month those constraints have become more apparent. Key elements include:
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Planned maintenance on the Armidale–Dumaresq 330 kV line (17–28 March) has reduced transmission capacity in northern NSW, tightening evening supply flows and contributing to more frequent short‑lived price spikes when demand rises.
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Elevated air‑conditioning and auxiliary load during early March heat events has exposed system sensitivity between 5pm–9pm, driving sharper late‑afternoon and evening price peaks than typically seen in early autumn.
These dynamics show that even as peak summer demand declines, network congestion can still materially impact prices when supply tightens.
Futures Pricing outlook
Forward electricity prices in NSW have stabilised in March, following the downward trend observed late in 2025. Prices for the second half of 2026 are now steady, suggesting the market may have reached a post-summer low.
March historically signals the start of upward price pressure later in the year as:
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Scheduled generator maintenance increases
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Solar output declines with shorter daylight hours
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Reserve margins tighten ahead of winter
For businesses with expiring contracts, March is a strategic window to engage the market before cooler weather and reliability concerns push prices higher.
Based on the tenders we have been receiving recently, retailers are becoming more selective about which contracts they choose to bid on. Engaging early and providing complete information helps businesses secure more competitive options and reduce procurement risk.
What it means for your business
The main cost risk in NSW remains peak sensitivity rather than system instability. Even short-lived network constraints or high-demand periods can trigger sharp price spikes.
Meanwhile, the rollout of grid-scale batteries and large-scale solar continues to shift the market:
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Daytime energy is increasingly cheap
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Evening energy carries a growing premium
Businesses that align operational schedules, tariff structures, and procurement timing with these intraday patterns, using tools like load shifting, demand response, or battery storage, are best positioned to manage costs effectively in 2026.
If you are unsure of your current position or do not yet have a strategy in place, we are here to help. Contact us for a free bill check or to discuss a tailored energy procurement plan.
nsw ELECTRICITY FUTURE PRICING CHARt
A major battery investment of up to $300 million has been announced in New South Wales, linked to the rapid growth of large-scale data centres and increasing electricity demand.
The project, led by data centre operator AirTrunk, will support a new hyperscale facility in Western Sydney with capacity exceeding 320 MW, highlighting the scale of energy required by emerging technologies such as AI and cloud computing.
The battery system (BESS) will:
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Store electricity during periods of low demand or high renewable output
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Discharge during peak periods, helping reduce strain on the grid
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Provide backup supply and improve reliability for both the facility and the surrounding network
Importantly, this is one of the first examples in Australia of a direct partnership between a large energy user and energy infrastructure providers to deliver a shared battery solution at the connection point.
The project reflects a broader shift in the market. As large energy users grow in size and concentration, particularly in NSW where a significant portion of data centres are located, there is increasing pressure on the grid to accommodate demand without impacting reliability or driving up costs for other users.
WHAT this means for businesses
This development highlights a key trend in the market:
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Large energy users are increasingly expected to manage their own impact on the grid
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Battery storage is becoming a core part of new connections, not just optional infrastructure
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Future projects may require integrated energy solutions (storage, renewables, demand management) as part of approval
In March, the NSW Government announced a ban on new greenfield coal mines, while still allowing extensions and expansions of existing operations. This represents a long-term policy signal rather than an immediate change to supply.
Existing coal mines will continue to operate and can extend their life, meaning coal-fired generation will remain a key part of the energy mix in the short to medium term. As a result, there is no immediate impact on electricity pricing or system reliability.
However, the policy provides clear direction that no new coal supply will be developed in the future. Over time, this is expected to contribute to a gradual tightening of coal availability, increasing reliance on renewable generation and firming technologies such as storage and gas.
For large energy users, the announcement does not create short-term pricing risk, but it does reinforce the importance of long-term procurement strategy. As coal assets retire over time, future pricing and reliability will increasingly depend on how effectively replacement capacity is delivered.
Default Market Offer Signals Falling Electricity Costs
The Default Market Offer (DMO) is a regulated benchmark electricity price set by the Australian Energy Regulator (AER) for residential customers and small businesses on standing offers. Its primary purpose is to provide price certainty and protect these customers from excessive retail electricity charges, acting as a safeguard for those who are not on negotiated market contracts.
In March 2026, the AER announced that DMO prices would fall from 1 July across NSW, Queensland, and South Australia, reflecting a combination of lower wholesale costs, strong renewable generation output, and increased competition in the retail market.
WHAT this means for businesses
Although the DMO does not directly apply to large commercial or industrial energy users, it provides a clear indicator of underlying wholesale market conditions and overall price trends.
This means that while large users are not automatically entitled to these reductions, the announcement signals a softening market and potential opportunities to secure more competitive contract rates.
NSW Boosts Renewable Capacity and Grid Storage
In March 2026, the NSW Government moved to accelerate the development of large-scale renewable and storage projects, reinforcing the state’s long-term energy transition plans. The government endorsed approximately $34 billion worth of projects, including wind and solar generation, pumped hydro, and large-scale battery storage, through its newly established Investment Delivery Authority. This authority is designed to fast-track approvals and overcome delays that have previously slowed project delivery.
Construction also began on the Hunter-Central Coast Renewable Energy Zone, which will add around 1.8 GW of new renewable capacity to the grid. In addition, a 400 MWh solar plus battery project at Burroway received approval in March, providing flexible generation and storage that can help manage peak demand and support grid stability. The NSW Government also declared several pumped hydro projects as Critical State Significant Infrastructure, ensuring these long-duration storage assets receive priority in planning and approval processes.
WHAT this means for businesses
The increased renewable capacity is expected to put downward pressure on daytime wholesale electricity prices, while the addition of storage and pumped hydro projects will help smooth price volatility during evening peaks and high-demand periods.
These projects signal that the state is prioritising reliable, low-cost, and firmed renewable supply, creating opportunities for businesses to optimise procurement strategies, shift load to low-cost periods, and secure more favourable forward contract pricing.