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Alliant Energy's 2025 GAAP EPS increased to $3.14, up from $2.69 in 2024, while ongoing EPS rose to $3.22, marking 6% growth. The company projects ongoing EPS for 2026 between $3.36 and $3.46. Growth is attributed to a regulated investment plan and rising customer demand, including an updated electric service agreement with data center operator QTS.

Earnings benefited from rate base increases and weather effects, with an estimated $11 million boost from temperature impacts. Capital spending plans from 2026 to 2029 will allocate $1.06-$1.50 billion annually to renewables and energy storage, while gas projects may peak at $1.52 billion in 2027. The strategy focuses on balancing reliability and decarbonization amid growth from commercial users.