AB 8402025 to 2026
bill
2025 to 2026 Legislature · State Assembly bill
AB 840
Relating to: certain requirements related to data centers.
In committee Last action March 23, 2026: Failed to concur in pursuant to Senate Joint Resolution 1
Official bill page and text: docs.legis.wisconsin.gov
Sponsors 29
Status
In committee as of March 23, 2026. The 2025 to 2026 Legislature serves until the 2027 Legislature convenes on January 4, 2027.
Referred to: Assembly Rules, Assembly State Affairs, Senate Utilities, Technology and Tourism (from the official referral record)
Roll-call votes 0
No roll-call votes recorded for this measure.
Timeline 34
| Date | Chamber | Action |
|---|---|---|
| March 23, 2026 | Senate | Failed to concur in pursuant to Senate Joint Resolution 1 |
| March 17, 2026 | Senate | Senate Substitute Amendment 1 offered by Senator Nass |
| March 13, 2026 | Senate | Available for scheduling |
| March 13, 2026 | Senate | Report concurrence recommended by Committee on Utilities, Technology and Tourism, Ayes 3, Noes 2 |
| March 13, 2026 | Senate | Executive action taken |
| February 17, 2026 | Senate | Public hearing held |
| January 23, 2026 | Senate | Read first time and referred to committee on Utilities, Technology and Tourism |
| January 22, 2026 | Senate | LRB correction (Assembly Substitute Amendment 2) |
| January 20, 2026 | Assembly | Assembly Substitute Amendment 4 offered by Representative Phelps |
| January 20, 2026 | Assembly | Refused to refer to committee on Energy and Utilities, Ayes 45, Noes 53 |
| January 20, 2026 | Assembly | Read a second time |
| January 20, 2026 | Senate | Received from Assembly |
| January 20, 2026 | Assembly | Ordered immediately messaged |
| January 20, 2026 | Assembly | Read a third time and passed, Ayes 53, Noes 44, Paired 2 |
| January 20, 2026 | Assembly | Rules suspended |
| January 20, 2026 | Assembly | Ordered to a third reading |
| January 20, 2026 | Assembly | Assembly Substitute Amendment 1 adopted |
| January 20, 2026 | Assembly | Assembly Substitute Amendment 1 offered by Representative Zimmerman |
| January 20, 2026 | Assembly | Assembly Substitute Amendment 2 laid on table, Ayes 55, Noes 43 |
| January 20, 2026 | Assembly | Assembly Substitute Amendment 2 offered by Representative Stroud |
| January 20, 2026 | Assembly | Decision of the Chair upheld, Ayes 56, Noes 42 |
| January 20, 2026 | Assembly | Decision of the Chair appealed |
| January 20, 2026 | Assembly | Point of order that Assembly Substitute Amendment 3 not germane under Assembly Rule 54 (3)(f) well taken |
| January 20, 2026 | Assembly | Assembly Substitute Amendment 3 offered by Representative Stroud |
| January 20, 2026 | Assembly | Decision of the Chair upheld, Ayes 53, Noes 45 |
| January 20, 2026 | Assembly | Decision of the Chair appealed |
| January 20, 2026 | Assembly | Point of order that Assembly Substitute Amendment 4 not germane under Assembly Rule 54 (3)(f) well taken |
| January 15, 2026 | Assembly | Referred to committee on Rules |
| January 15, 2026 | Assembly | Report passage recommended by Committee on State Affairs, Ayes 7, Noes 3 |
| January 15, 2026 | Assembly | Executive action taken |
| January 14, 2026 | Assembly | Placed on calendar 1-20-2026 by Committee on Rules |
| January 14, 2026 | Assembly | Public hearing held |
| January 9, 2026 | Assembly | Read first time and referred to Committee on State Affairs |
| January 9, 2026 | Assembly | Introduced by Representatives Zimmerman, Born, Allen, Armstrong, Brooks, Dallman, Dittrich, Duchow, Green, Gundrum, B. Jacobson, Knodl, Krug, Kreibich, Maxey, Melotik, Murphy, Nedweski, Neylon, Novak, O'Connor, Penterman, Petersen, Snyder, Sortwell, Summerfield, Tranel, Wittke and Hurd; cosponsored by Senators Quinn, Feyen, Jagler, James, Marklein and Wimberger |
Data: Open States (bulk data, October 1, 2026 monthly extract, which has no roll-call tallies; public data, attribution appreciated). Official record: docs.legis.wisconsin.gov. Bill pages link to the official text, not copied.