Committee OKs Supervisor Rosenberg Testifying in Support of Utility Tax Bill AB 559

Oct 29, 2025

Supervisor Rosenberg won committee authorization to testify for AB 559 (and companion SB 556), which would expand the state efinition of taxable "utility" activity to include battery storage, pumped hydro, flywheels and LNG used for electricity generation, potentially increasing Marathon County's share of state utility tax distributions.

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Supervisor Rosenberg briefed the committee on AB 559 (companion SB 556), which would expand the classes of activity the state treats as taxable utility generation for the purpose of state collections and distribution to local governments. Rosenberg said the change would include compressed air, pumped hydro, flywheels and liquefied natural gas used for electricity generation and could raise the county's share of utility tax distributions.

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