TransAlta Development and Strategic Accomplishments

Performance Standard Change Makes CTG More Competitive 29 29 Marginal Cost ($/MWh) $90 $80 $70 $60 $50 $40 $30 $20 $10 $0 MARGINAL COST UNDER EVOLVING PERFORMANCE STANDARD 2022 Existing CCGT ■Converted Gas 2025 2030 ■Proposed New CCGT (Unabated) Converted gas (CTG) to have lower variable costs under more stringent policy TransAlta

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