Frontier Energy gains a bigger fixed-revenue base at Waroona

AEMO lifts Waroona’s capacity allocation

Frontier Energy Limited (ASX:FHE) has secured a meaningful uplift to the fixed-price revenue underpinning its Waroona Renewable Energy Project, after the Australian Energy Market Operator increased Stage One’s Reserve Capacity Credits from 88.06MW to 99MW for the 2028/29 capacity year. The extra 10.95MW is expected to lift annual Reserve Capacity Payments from approximately $32 million to $36 million.

The increase is entirely attributable to the solar component. Waroona’s battery allocation remains unchanged at 81.5MW, while the solar allocation rises from 6.55MW to 17.5MW. Frontier said the result followed the introduction of the Relevant Level Testing Method, a revised framework for assessing how much dependable capacity intermittent generators such as solar can contribute during peak demand periods.

Forecast cash generation moves higher

At the stated fixed Reserve Capacity Price of $360,700 per megawatt, the revised allocation improves Frontier’s forecasts for the period from expected first generation in mid-2028 to 30 September 2032. Average annual revenue is now forecast at about $76 million, up from $72.5 million; EBITDA rises to approximately $66 million from $61.4 million; and free cash flow increases to about $38 million from $35 million.

Those capacity payments sit on top of revenue from electricity sales. The fixed price applies through 30 September 2032, after which Frontier says Waroona will continue receiving Reserve Capacity Payments, but at a floating price rather than the current fixed rate. The figures are forecasts rather than audited results and include assumptions about debt servicing, tax, operating costs, energy prices and the project meeting its reserve capacity obligations.

Construction execution remains the key test

The improved revenue profile arrives as work at site ramps up. Frontier’s fixed-price Waroona contracts had previously been reported as executed with an unconditional grid connection, while Stage One comprises a 132MW solar facility and an 81.5MW battery designed to store daytime generation and dispatch during higher-value evening periods.

Frontier Executive Chairman Jamie Cullen said the higher allocation “further strengthens the already robust commercial foundations of Stage One” and described the result as a “meaningful uplift in fixed price revenue”. The company considers the increase a one-off, sustained uplift arising from the transition to the revised rules, but it also cautioned that future AEMO allocations are not guaranteed to remain at 99MW.

Rule change helps solar contribution

The change matters beyond the headline dollar uplift because it alters the way Waroona’s solar generation is credited within Western Australia’s Reserve Capacity Mechanism. The mechanism is designed to ensure enough generation and storage capacity is available during peak demand, with certified facilities paid for the capacity they can provide. Frontier’s Waroona project financing had already established the project’s debt and equity funding pathway, but the revised allocation improves the forecast economics rather than changing the project’s funding structure in this announcement.

The remaining question is delivery. Frontier is forecasting first generation in mid-2028 and assumes 99MW of credits in each capacity year from 2028/29 to 2031/32. Construction or commissioning delays, weaker operating performance, changes to the Electricity System and Market Rules, future AEMO assessments or shifts in wholesale electricity prices could all leave actual outcomes materially different from the updated forecasts.