The July 2026 release adopts the 2026 ISP cost set: gas peaker costs rise in the near term, while projected solar capex falls sharply by the mid-2030s

Overnight capital cost (A$/kW)
April 2026 release
July 2026 release
Source: AEMO 2026 ISP (CSIRO GenCost), Modo Energy
Note: Gas peaker size classes (large/small GT) follow CSIRO GenCost. April release uses the draft 2025 IASR cost set. All panels in A$/kW on a shared y-axis scale.
MODOENERGY