Akaysha Energy’s Waratah Super Battery in Australia Returns to 700MW as Transformer 2 Comes Back Online

Why It Matters

Restoring 700 MW revives Akaysha’s contracted cash flow and opens merchant market earnings, accelerating the path to full‑scale operation and attracting new capital. The milestone also underscores Australia’s growing reliance on large‑scale battery storage for grid stability.

Key Takeaways

• Waratah now delivers 700 MW, 82% of design capacity
• 350 MW allocated to SIPS, 350 MW to merchant market
• HVT3 replacement slated Q3 2026, full 850 MW by year‑end
• Merchant operations tap growing NEM price spreads
• BlackRock eyes $1 billion valuation, potential capital raise

Pulse Analysis

The Waratah Super Battery, a BlackRock‑backed 850 MW project, has cleared its longest commissioning hurdle with the return of High Voltage Transformer 2. Operating at 700 MW—82% of its design power—the site now meets its System Integrity Protection Scheme (SIPS) commitment to Transgrid while freeing half the capacity for merchant trading in the National Electricity Market. This dual‑mode approach reflects a broader industry trend where storage assets balance reliability services with profit‑driven market participation, enhancing grid resilience amid rising renewable penetration.

Commercially, the restored 350 MW of SIPS capacity re‑establishes the revenue stream that was halved during the transformer outage, while the newly available 350 MW of merchant capacity taps the NEM’s expanding price spreads and ancillary service markets. Recent data show Australian battery fleets generating roughly $490,000 (AU$743,000) in monthly dispatch revenue, with intraday spreads averaging about AU$106/MWh (≈$70/MWh). Waratah’s entry into these markets positions Akaysha to capture comparable earnings, bolstering cash flow ahead of the full‑capacity rollout.

Strategically, the project’s progress fuels investor confidence. BlackRock is reportedly considering a multi‑hundred‑million‑dollar capital raise based on a valuation exceeding $1 billion, leveraging the successful commissioning milestones and the involvement of local manufacturer Wilson Transformer Company. With HVT3 slated for delivery in Q3 2026 and full 850 MW capability expected by year‑end, Waratah will become one of Australia’s largest grid‑scale batteries, setting a benchmark for future storage developments and reinforcing the country’s transition to a more flexible, low‑carbon electricity system.