State, local and federal policy

Enacted legislation or regulation

Recorded actions of type Enacted legislation or regulation. An empty result is not a national finding.

Action type is the legal character of the instrument. It is not a score.

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Enacted legislation or regulation
Scope	Authority	Jurisdiction	Action	Status	Stage	Effective	Timing	Record
California California	California Legislature Legislature	State	Enacted legislation or regulation	Adopted—not yet effective	Operation	1 January 2027	Not stored as one date — see completion condition	Data center transmission, distribution and generation tariffs required Primary source · Reviewed alternate official source (23 September 2026)
California California	California Legislature Legislature	State	Enacted legislation or regulation	Adopted—not yet effective	Permitting	1 January 2027	Not stored as one date — see completion condition	Water conditions before local data center permits Primary source · Reviewed alternate official source (23 September 2026)
California California	California Legislature Legislature	State	Enacted legislation or regulation	Adopted—not yet effective	Operation	1 January 2027	Not stored as one date — see completion condition	Commission assessment of data center rate structures Primary source · Reviewed alternate official source (23 September 2026)
California California	California Legislature Legislature	State	Enacted legislation or regulation	Adopted—not yet effective	Interconnection	1 January 2027	Not stored as one date — see completion condition	Commission tariffs for data center interconnection and service Primary source · Reviewed alternate official source (23 September 2026)
California California	California Legislature Legislature	State	Enacted legislation or regulation	Adopted—not yet effective	Permitting	1 January 2027	Not stored as one date — see completion condition	CEQA applies to data center entitlements Primary source · Reviewed alternate official source (23 September 2026)
Alabama Power service territory, Alabama Alabama	Alabama Public Service Commission Regulator or commission	State	Enacted legislation or regulation	In effect	Operation	19 October 2026	Not stored as one date — see completion condition	Alabama PSC Docket 33709: review procedures for Alabama Power's large data center contracts Primary source
City of Milwaukee, Wisconsin Wisconsin	Milwaukee Common Council Local government	Local	Enacted legislation or regulation	In effect	Permitting	17 October 2026	No expiration date recorded	Milwaukee: temporary data-center pause effective 17 October 2026 (File 251924) Primary source
City of Oakland, California California	Oakland City Council Local government	Local	Enacted legislation or regulation	In effect	Permitting	6 October 2026	No expiration date recorded	Oakland: interim data-center moratorium effective 6 October 2026 (27-0050) Primary source
Maryland Maryland	Governor of Maryland Executive	State	Enacted legislation or regulation	In effect	More than one stage	23 September 2026	Not stored as one date — see completion condition	Executive Order 01.01.2026.16: data center framework and task force Primary source
Virginia Virginia	Governor of Virginia Executive	State	Enacted legislation or regulation	In effect	More than one stage	18 September 2026	Not stored as one date — see completion condition	Executive Order 22: Virginia Data Center Accountability Framework Primary source
City of St. Louis, Missouri Missouri	Board of Aldermen of the City of St. Louis Local government	Local	Enacted legislation or regulation	In effect	Permitting	17 September 2026	Not stored as one date — see completion condition	St. Louis: data center zoning regulations (Ordinance 72181) Primary source
Nevada Nevada	Governor of Nevada Executive	State	Enacted legislation or regulation	In effect	Incentive	17 September 2026	Not stored as one date — see completion condition	Minimum terms for data center tax abatement applications Primary source
AEP Ohio (Ohio Power Company) service territory, Ohio Ohio	Ohio Power Company (AEP Ohio) Utility	Utility territory	Enacted legislation or regulation	In effect	More than one stage	Several dates apply; see the source	Not stored as one date — see completion condition	AEP Ohio Schedule DCT data center tariff sheets Primary source
AEP Ohio service territory, Ohio Ohio	Public Utilities Commission of Ohio Regulator or commission	State	Enacted legislation or regulation	In effect	Operation	28 August 2026	Not stored as one date — see completion condition	PUCO interim SSO rules for AEP Ohio data center customers Primary source
New Jersey New Jersey	New Jersey Legislature Legislature	State	Enacted legislation or regulation	In effect	Incentive	27 August 2026	Not stored as one date — see completion condition	End Data Center Tax Credits Act cuts Next New Jersey credits Primary source
Delaware Delaware	Delaware General Assembly Legislature	State	Enacted legislation or regulation	In effect	More than one stage	26 August 2026	No expiration date recorded	Large energy use facility rate class and service agreements (85 Del. Laws c. 440) Primary source
Delaware Delaware	Delaware General Assembly Legislature	State	Enacted legislation or regulation	In effect	Permitting	26 August 2026	No expiration date recorded	Public bodies barred from data center nondisclosure agreements (85 Del. Laws c. 447) Primary source
Big Rivers Electric Corporation and Kenergy Corp. service to the Hawesville data center campus, Hancock County, Kentucky Kentucky	Kentucky Public Service Commission Regulator or commission	State	Enacted legislation or regulation	In effect	Operation	Effective date not stated in the source	Not stored as one date — see completion condition	Big Rivers/Kenergy service agreement for the TeraWulf Hawesville data center approved Primary source
ERCOT power region, Texas Texas	Public Utility Commission of Texas Regulator or commission	State	Enacted legislation or regulation	In effect	Interconnection	20 August 2026	Not stored as one date — see completion condition	Order letting ERCOT delay Batch Zero classification during the data-center audit Primary source
Pennsylvania Pennsylvania	Pennsylvania Department of Revenue Government agency	State	Enacted legislation or regulation	In effect	Incentive	18 August 2026	No expiration date recorded	Revenue program guidelines add GRID consent-order condition Primary source
Pennsylvania Pennsylvania	Governor of Pennsylvania Executive	State	Enacted legislation or regulation	In effect	More than one stage	18 August 2026	Not stored as one date — see completion condition	Executive Order 2026-05 data center permitting and incentive conditions Primary source
ERCOT region, Texas Texas	Electric Reliability Council of Texas Grid operator	Regional grid	Enacted legislation or regulation	In effect	Operation	1 August 2026	Not stored as one date — see completion condition	ERCOT ride-through requirements for large computational loads (NOGRR 282) Primary source
ERCOT region, Texas Texas	Electric Reliability Council of Texas Grid operator	Regional grid	Enacted legislation or regulation	In effect	Interconnection	1 August 2026	Not stored as one date — see completion condition	ERCOT definition of Large Computational Load (NPRR 1308) Primary source
Nashville and Davidson County, Tennessee Tennessee	Metropolitan Council of Nashville and Davidson County Local government	Local	Enacted legislation or regulation	In effect	Permitting	31 July 2026	No expiration date recorded	Nashville and Davidson County (Metropolitan Government): zoning code data center use categories and conditions (BL2026-1391) Primary source
Maine Maine	Maine Legislature Legislature	State	Enacted legislation or regulation	In effect	Incentive	29 July 2026	Not stored as one date — see completion condition	Data centers excluded from business equipment exemption and Dirigo incentives Primary source
Seattle, Washington Washington	Seattle City Council Local government	Local	Enacted legislation or regulation	In effect	Operation	Effective date not stated in the source	Not stored as one date — see completion condition	Seattle: new large data center loads served only by contract Primary source
Nebraska Nebraska	Governor of Nebraska Executive	State	Enacted legislation or regulation	In effect	More than one stage	Effective date not stated in the source	Not stored as one date — see completion condition	Executive order on state incentives and a data center task force Primary source
Vermont Vermont	Vermont Department of Public Service Government agency	State	Enacted legislation or regulation	In effect	Construction	14 July 2026	Not stored as one date — see completion condition	Commercial energy-code requirements for data center rooms Primary source
Portland General Electric service territory in Oregon Oregon	Oregon Public Utility Commission Regulator or commission	State	Enacted legislation or regulation	In effect	Interconnection	Several dates apply; see the source	Not stored as one date — see completion condition	PGE large-load tariff compliance approval Primary source
Portland General Electric service territory, Oregon Oregon	Portland General Electric Company Utility	Utility territory	Enacted legislation or regulation	In effect	Operation	8 July 2026	Not stored as one date — see completion condition	PGE Schedule 496 Data Center Cost-of-Service Opt-Out (20,000 kW and above) Primary source
Portland General Electric service territory, Oregon Oregon	Portland General Electric Company Utility	Utility territory	Enacted legislation or regulation	In effect	Operation	8 July 2026	Not stored as one date — see completion condition	PGE Schedule 596 Data Center Direct Access Service (20,000 kW and above) Primary source
Portland General Electric service territory, Oregon Oregon	Portland General Electric Company Utility	Utility territory	Enacted legislation or regulation	In effect	Operation	8 July 2026	Not stored as one date — see completion condition	PGE Schedule 96 Data Center Standard Service (20,000 kW and above) Primary source
North Carolina North Carolina	North Carolina General Assembly Legislature	State	Enacted legislation or regulation	In effect	Incentive	7 July 2026	Not stored as one date — see completion condition	S.L. 2026-41 s. 44.4 repeals datacenter electricity exemptions Primary source
New Jersey New Jersey	New Jersey Legislature Legislature	State	Enacted legislation or regulation	In effect	Operation	7 July 2026	Not stored as one date — see completion condition	Large data center electric service standards required of the BPU Primary source
Arizona Arizona	Arizona Legislature Legislature	State	Enacted legislation or regulation	In effect	Incentive	1 July 2026	Scheduled 30 June 2029	Pause on new data-center tax-relief applications Primary source
Florida Florida	Florida Legislature Legislature	State	Enacted legislation or regulation	In effect	More than one stage	1 July 2026	Not stored as one date — see completion condition	SB 484 (2026): large load tariffs and large-scale data center water permits (ch. 2026-65) Primary source
Indiana Indiana	Indiana General Assembly Legislature	State	Enacted legislation or regulation	In effect	Incentive	1 July 2026	Not stored as one date — see completion condition	HEA 1210 (2026): local payment condition on new data center sales tax certificates Primary source · Archived copy (18 March 2026)
Nebraska Nebraska	Nebraska Legislature Legislature	State	Enacted legislation or regulation	In effect	Incentive	1 July 2026	Not stored as one date — see completion condition	LB 901 (2026) repeal of the data center sales tax exemption Primary source
Oklahoma Oklahoma	Oklahoma Legislature Legislature	State	Enacted legislation or regulation	In effect	More than one stage	1 July 2026	Not stored as one date — see completion condition	Data Center Customer Ratepayer Protection Act of 2026 (HB 2992) Primary source · Archived copy (2 September 2026)
PPL Electric Utilities service territory, Pennsylvania Pennsylvania	PPL Electric Utilities Corporation (tariff filed with the Pennsylvania Public Utility Commission) Utility	Utility territory	Enacted legislation or regulation	In effect	Interconnection	1 July 2026	Not stored as one date — see completion condition	PPL Rate Schedule LP-6 for large load (data center) interconnections Primary source
South Dakota South Dakota	South Dakota Legislature Legislature	State	Enacted legislation or regulation	In effect	Operation	1 July 2026	Not stored as one date — see completion condition	PUC may charge data centers for reviewing service agreements Primary source
South Dakota South Dakota	South Dakota Legislature Legislature	State	Enacted legislation or regulation	In effect	More than one stage	1 July 2026	Not stored as one date — see completion condition	Separate electric service terms and water reporting for data centers Primary source
Southwest Power Pool region (multistate) 17 jurisdictions listed, 17 only in part · Covered jurisdictions	Federal Energy Regulatory Commission Regulator or commission	Regional grid	Enacted legislation or regulation	In effect	Interconnection	1 July 2026	No expiration date recorded	Southwest Power Pool: Conditional High Impact Large Load Service accepted by FERC (ER26-1323) Primary source
Virginia Virginia	Virginia General Assembly Legislature	State	Enacted legislation or regulation	In effect	Operation	1 July 2026	Not stored as one date — see completion condition	Data Center Electricity Consumption Tax (2026 Special Session I budget, Item 3-5.24) Primary source
Virginia Virginia	Virginia General Assembly Legislature	State	Enacted legislation or regulation	In effect	Permitting	1 July 2026	Not stored as one date — see completion condition	Data center air permits: Tier 4 equivalent generator emission limits (Va. Code 10.1-1322.6) Primary source
Dominion Energy Virginia service territory, Virginia Virginia	Virginia Electric and Power Company (Dominion Energy Virginia) Utility	Utility territory	Enacted legislation or regulation	In effect	Operation	1 July 2026	Scheduled 30 June 2028	Dominion tariff sheet collecting the Data Center Electricity Consumption Tax Primary source
Washington Washington	Washington State Legislature Legislature	State	Enacted legislation or regulation	In effect	Incentive	1 July 2026	Not stored as one date — see completion condition	Replacement-equipment exemption removed Primary source
Frederick County, Maryland Maryland	Supreme Court of Maryland Court	Local	Enacted legislation or regulation	In effect	Permitting	30 June 2026	Not stored as one date — see completion condition	Frederick County: frederick data center zoning ordinance not subject to referendum Primary source
Municipality of Anchorage, Alaska Alaska	Municipality of Anchorage Local government	Local	Enacted legislation or regulation	In effect	Permitting	Effective date not stated in the source	No expiration date recorded	Anchorage: title 21 data center use standards Primary source
NIPSCO electric service territory, Indiana Indiana	Indiana Utility Regulatory Commission Regulator or commission	State	Enacted legislation or regulation	In effect	Operation	17 June 2026	Not stored as one date — see completion condition	IURC Cause 46322: NIPSCO special contract for Amazon data centers Primary source
Illinois Illinois	Illinois General Assembly Legislature	State	Enacted legislation or regulation	In effect	Incentive	16 June 2026	Not stored as one date — see completion condition	Public Act 104-0468 amendment to the data center investment section Primary source
Lexington-Fayette Urban County, Kentucky Kentucky	Lexington-Fayette Urban County Council Local government	Local	Enacted legislation or regulation	In effect	Permitting	9 June 2026	No expiration date recorded	Lexington-Fayette Urban County: Resolution R-236-2026 initiating data center zoning amendments Primary source
Oregon Oregon	Oregon Legislative Assembly Legislature	State	Enacted legislation or regulation	In effect	Incentive	5 June 2026	Not stored as one date — see completion condition	Enterprise-zone limits for data centers Primary source
Alabama Alabama	Alabama Legislature Legislature	State	Enacted legislation or regulation	In effect	Incentive	1 June 2026	Not stored as one date — see completion condition	Limits on data processing center tax abatements (Act 2026-573) Primary source · Archived copy (18 May 2026)
Illinois Illinois	Illinois General Assembly Legislature	State	Enacted legislation or regulation	In effect	Permitting	1 June 2026	Not stored as one date — see completion condition	Emission standards for data center backup generator permits Primary source
Utah Utah	Governor of Utah Executive	State	Enacted legislation or regulation	In effect	More than one stage	29 May 2026	Not stored as one date — see completion condition	Executive Order 2026-03: data center framework for state agencies Primary source
South Carolina South Carolina	South Carolina General Assembly Legislature	State	Enacted legislation or regulation	In effect	Incentive	19 May 2026	Not stored as one date — see completion condition	Act 242 (2026): data centers excluded from new provider tax exemption Primary source
San Angelo, Texas Texas	San Angelo City Council Local government	Local	Enacted legislation or regulation	In effect	Permitting	19 May 2026	Not stored as one date — see completion condition	San Angelo: zoning standards for data centers (Sec. 430) Primary source
Portland General Electric service territory in Oregon Oregon	Oregon Public Utility Commission Regulator or commission	State	Enacted legislation or regulation	In effect	More than one stage	7 May 2026	Not stored as one date — see completion condition	PGE data-center cost-allocation order Primary source
Utah Utah	Utah Legislature Legislature	State	Enacted legislation or regulation	In effect	Incentive	6 May 2026	Not stored as one date — see completion condition	Local incentives for large load data centers barred from May 2027 Primary source
Dickey County, North Dakota North Dakota	Dickey County Board of County Commissioners Local government	Local	Enacted legislation or regulation	In effect	More than one stage	21 April 2026	Not stored as one date — see completion condition	Dickey County: zoning standards for data centers Primary source
West Virginia West Virginia	West Virginia Department of Commerce (Department of Economic Development) Government agency	State	Enacted legislation or regulation	In effect	Permitting	1 April 2026	Scheduled 1 August 2031	145 CSR 20: certification rule for microgrid districts and high impact data centers Primary source
DTE Electric service territory, Michigan Michigan	Michigan Public Service Commission Regulator or commission	State	Enacted legislation or regulation	In effect	Operation	Effective date not stated in the source	No expiration date recorded	MPSC Case U-21990: rehearing and reopening of Saline data center contracts denied Primary source
Pacific Gas and Electric service territory, California California	California Public Utilities Commission Regulator or commission	State	Enacted legislation or regulation	In effect	Interconnection	19 March 2026	Not stored as one date — see completion condition	CPUC Resolution E-5433: PG&E transmission energization agreement for a Menlo Equities data center Primary source
West Virginia West Virginia	West Virginia Legislature Legislature	State	Enacted legislation or regulation	In effect	More than one stage	13 March 2026	Not stored as one date — see completion condition	HB 4983 (2026) authorizes the 145 CSR 20 certification rule Primary source
Consumers Energy electric service territory, Michigan Michigan	Michigan Public Service Commission Regulator or commission	State	Enacted legislation or regulation	In effect	More than one stage	Effective date not stated in the source	No expiration date recorded	MPSC Case U-21859: rehearing of Consumers Energy large load terms denied Primary source
Pacific Gas and Electric service territory, California California	California Public Utilities Commission Regulator or commission	State	Enacted legislation or regulation	In effect	Interconnection	15 January 2026	Not stored as one date — see completion condition	CPUC Resolution E-5439: PG&E transmission energization agreement for a Microsoft data center Primary source
Southwest Power Pool region (multistate) 17 jurisdictions listed, 17 only in part · Covered jurisdictions	Federal Energy Regulatory Commission Regulator or commission	Regional grid	Enacted legislation or regulation	In effect	Interconnection	15 January 2026	No expiration date recorded	Southwest Power Pool: High Impact Large Load study processes accepted by FERC (ER26-247) Primary source
California California	California Legislature Legislature	State	Enacted legislation or regulation	In effect	Operation	1 January 2026	Scheduled 1 January 2031	Commission assessment of data center cost shifts Primary source · Reviewed alternate official source (23 September 2026)
Indiana Indiana	Indiana General Assembly Legislature	State	Enacted legislation or regulation	In effect	Incentive	1 January 2026	Not stored as one date — see completion condition	HEA 1601 (2025): data center exemption chapter extended to quantum and advanced computing networks Primary source · Archived copy (8 April 2026)
Derry, New Hampshire New Hampshire	Derry Town Council Local government	Local	Enacted legislation or regulation	In effect	Permitting	19 December 2025	Not stored as one date — see completion condition	Derry: definition of a data center or information-processing facility Primary source
DTE Electric service territory, Michigan Michigan	Michigan Public Service Commission Regulator or commission	State	Enacted legislation or regulation	In effect	Operation	Effective date not stated in the source	Not stored as one date — see completion condition	MPSC Case U-21990: DTE special contracts for the Saline Township data center Primary source
Evergy Missouri Metro and Evergy Missouri West service territories, Missouri Missouri	Missouri Public Service Commission Regulator or commission	State	Enacted legislation or regulation	In effect	Operation	13 December 2025	Not stored as one date — see completion condition	Missouri PSC approval of Evergy large load power service plan Primary source · Archived copy (4 October 2026)
Consumers Energy electric service territory, Michigan Michigan	Michigan Public Service Commission Regulator or commission	State	Enacted legislation or regulation	In effect	More than one stage	Effective date not stated in the source	Not stored as one date — see completion condition	MPSC Case U-21859: Consumers Energy Rate GPD large load terms Primary source
Pacific Gas and Electric service territory, California California	California Public Utilities Commission Regulator or commission	State	Enacted legislation or regulation	In effect	Interconnection	30 October 2025	Not stored as one date — see completion condition	CPUC Resolution E-5420: PG&E transmission energization agreement for a STACK Infrastructure data center Primary source
East Kentucky Power Cooperative owner-member service territories, Kentucky Kentucky	Kentucky Public Service Commission Regulator or commission	State	Enacted legislation or regulation	In effect	Operation	30 October 2025	Not stored as one date — see completion condition	EKPC Data Center Power Tariff (Rate DCP) approved Primary source
AEP Ohio service territory, Ohio Ohio	Public Utilities Commission of Ohio Regulator or commission	State	Enacted legislation or regulation	In effect	More than one stage	Effective date not stated in the source	Not stored as one date — see completion condition	PUCO denial of rehearing on the AEP Ohio data center tariff Primary source
Entergy Louisiana service territory, Louisiana Louisiana	Louisiana Public Service Commission Regulator or commission	State	Enacted legislation or regulation	In effect	Operation	29 August 2025	Not stored as one date — see completion condition	LPSC Order U-37425: Entergy resources for a Richland Parish data center Primary source
Florida Florida	Florida Legislature Legislature	State	Enacted legislation or regulation	In effect	Incentive	1 August 2025	Not stored as one date — see completion condition	HB 7031 (2025) section 46 amends the data center property exemption Primary source
AEP Ohio service territory, Ohio Ohio	Public Utilities Commission of Ohio Regulator or commission	State	Enacted legislation or regulation	In effect	More than one stage	Effective date not stated in the source	Not stored as one date — see completion condition	PUCO approval of AEP Ohio data center tariff pages Primary source
West Virginia West Virginia	West Virginia Legislature Legislature	State	Enacted legislation or regulation	In effect	More than one stage	11 July 2025	Not stored as one date — see completion condition	HB 2014: certified microgrid and high impact data center program; local preemption Primary source
Phoenix, Arizona Arizona	Phoenix City Council Local government	Local	Enacted legislation or regulation	Adopted; effective status unverified	Permitting	Effective status not verified	Not stored as one date — see completion condition	Phoenix: data center definition, design standards and special permit Primary source
Kansas Kansas	Kansas Legislature Legislature	State	Enacted legislation or regulation	In effect	Incentive	1 July 2025	Not stored as one date — see completion condition	Qualified data centers excluded from economic development electric rate discounts Primary source
Kansas Kansas	Kansas Legislature Legislature	State	Enacted legislation or regulation	In effect	Incentive	1 July 2025	Not stored as one date — see completion condition	Security review before incentives for qualified data centers Primary source
Minnesota Minnesota	Minnesota Legislature Legislature	State	Enacted legislation or regulation	In effect	Incentive	1 July 2025	Not stored as one date — see completion condition	Electricity exemption removed after June 2025 Primary source
Kentucky Kentucky	Kentucky General Assembly Legislature	State	Enacted legislation or regulation	In effect	Incentive	27 June 2025	Not stored as one date — see completion condition	HB 775 (2025), Acts ch. 98, sec. 34: qualified data center project investment thresholds Primary source
Oregon Oregon	Oregon Legislative Assembly Legislature	State	Enacted legislation or regulation	In effect	Operation	16 June 2025	Not stored as one date — see completion condition	POWER Act: separate rate class for 20 MW+ large energy use facilities (data centers) Primary source
Minnesota Minnesota	Minnesota Legislature Legislature	State	Enacted legislation or regulation	In effect	Operation	15 June 2025	No expiration date recorded	Annual fee on qualified large-scale data centers Primary source
Minnesota Minnesota	Minnesota Legislature Legislature	State	Enacted legislation or regulation	In effect	More than one stage	Several dates apply; see the source	No expiration date recorded	2025 data center act (H.F. 16) Primary source
Iowa Iowa	Iowa General Assembly Legislature	State	Enacted legislation or regulation	In effect	Incentive	6 June 2025	Not stored as one date — see completion condition	2025 duration limits on data center fuel and electricity exemptions Primary source
Montana Montana	Montana Legislature Legislature	State	Enacted legislation or regulation	In effect	More than one stage	13 May 2025	Not stored as one date — see completion condition	2025 amendments to data center property class and sale of data center power Primary source
Santee Cooper service territory, South Carolina South Carolina	South Carolina Public Service Authority (Santee Cooper) Utility	Utility territory	Enacted legislation or regulation	In effect	Operation	25 April 2025	Scheduled 24 April 2029	Santee Cooper experimental large load rate schedule L-25-LL Primary source
Arkansas Arkansas	Arkansas General Assembly Legislature	State	Enacted legislation or regulation	In effect	Incentive	Effective date not stated in the source	Not stored as one date — see completion condition	Act 548 of 2025 amendments to the data center sales and use tax exemption Primary source
Washington Washington	Governor of Washington Executive	State	Enacted legislation or regulation	In effect	More than one stage	3 February 2025	Not stored as one date — see completion condition	Data Center Workgroup order Primary source
Appalachian Power service territory, Virginia Virginia	Appalachian Power Company (tariff filed with the Virginia State Corporation Commission) Utility	Utility territory	Enacted legislation or regulation	In effect	Incentive	1 January 2025	Not stored as one date — see completion condition	APCo Virginia economic development rider excludes mobile data centers Primary source
Montana-Dakota Utilities Co. South Dakota electric service area South Dakota	Montana-Dakota Utilities Co. (tariff filed with the South Dakota Public Utilities Commission) Utility	Utility territory	Enacted legislation or regulation	In effect	Operation	1 September 2024	Not stored as one date — see completion condition	Montana-Dakota South Dakota Rate 45 for data center-type loads Primary source
Iowa Iowa	Iowa Department of Revenue Government agency	State	Enacted legislation or regulation	In effect	Incentive	28 August 2024	Scheduled 28 August 2029	Revenue rules implementing the data center exemption and refunds Primary source
Maryland Maryland	Maryland General Assembly Legislature	State	Enacted legislation or regulation	In effect	Permitting	1 July 2024	Not stored as one date — see completion condition	Critical Infrastructure Streamlining Act of 2024 (ch. 411, SB 474) Primary source
Arkansas Arkansas	Arkansas General Assembly Legislature	State	Enacted legislation or regulation	In effect	Operation	3 May 2024	No expiration date recorded	Act 173 amendments to the Arkansas Data Centers Act Primary source
Sarpy County, Nebraska (county zoning jurisdiction) Nebraska	Sarpy County Board of Commissioners Local government	Local	Enacted legislation or regulation	In effect	Permitting	Effective date not stated in the source	Not stored as one date — see completion condition	Sarpy County: zoning districts where data centers are allowed Primary source
Montana-Dakota Utilities electric service area, North Dakota North Dakota	Montana-Dakota Utilities Co. Utility	Utility territory	Enacted legislation or regulation	In effect	Operation	1 July 2023	Not stored as one date — see completion condition	Montana-Dakota Rate 45 for data center-type high density loads (10 MW and above) Primary source
Idaho Power Company service territory, Idaho Idaho	Idaho Public Utilities Commission Regulator or commission	State	Enacted legislation or regulation	In effect	Operation	Effective date not stated in the source	Not stored as one date — see completion condition	IPUC Order 35777: Idaho Power special contract for a data center Primary source
Arkansas Arkansas	Arkansas General Assembly Legislature	State	Enacted legislation or regulation	In effect	More than one stage	Effective date not stated in the source	No expiration date recorded	Arkansas Data Centers Act of 2023 (Act 851) Primary source
Florida Florida	Florida Department of Revenue Government agency	State	Enacted legislation or regulation	In effect	Incentive	14 June 2022	Not stored as one date — see completion condition	Rule 12A-1.108, F.A.C.: exemption for data center property Primary source
Georgia Georgia	Georgia General Assembly Legislature	State	Enacted legislation or regulation	In effect	Incentive	9 May 2022	Scheduled 31 December 2031	Act 842 revises thresholds and extends exemption Primary source · Archived copy (4 June 2023)
Arizona Arizona	Arizona Legislature Legislature	State	Enacted legislation or regulation	In effect	Incentive	Several dates apply; see the source	Not stored as one date — see completion condition	2021 extension of the data center certification cutoff to 2033 Primary source
City of Aurora, Illinois Illinois	Aurora City Council Local government	Local	Enacted legislation or regulation	In effect	Permitting	Effective date not stated in the source	No expiration date recorded	Aurora: data center facility conditional use and performance standards (File 26-0112) Primary source
Indiana Indiana	Indiana General Assembly Legislature	State	Enacted legislation or regulation	In effect	Incentive	Effective date not stated in the source	Scheduled 1 July 2027	HEA 1406 (2026) section 27: state study of data center tax incentives and impacts Primary source · Archived copy (3 October 2026)
Maryland (the construction limit applies only in Baltimore City) Maryland	Maryland General Assembly Legislature	State	Enacted legislation or regulation	In effect	More than one stage	Several dates apply; see the source	Not stored as one date — see completion condition	Utility RELIEF Act data center provisions (2026 ch. 353, HB 1532) Primary source
Maine Maine	Governor of Maine Executive	State	Enacted legislation or regulation	In effect	More than one stage	Effective date not stated in the source	No expiration date recorded	Data Center Advisory Council and ratepayer protection order Primary source · Archived copy (16 July 2026)
Kansas City, Missouri Missouri	Kansas City City Council Local government	Local	Enacted legislation or regulation	In effect	Permitting	Effective date not stated in the source	Not stored as one date — see completion condition	Kansas City: data center zoning use standards (Ordinance 251031) Primary source
Leola site, FEM Electric Association service area, South Dakota South Dakota	South Dakota Public Utilities Commission Regulator or commission	State	Enacted legislation or regulation	In effect	Operation	Effective date not stated in the source	Not stored as one date — see completion condition	SD PUC EL24-027: electric provider assigned for the Leola data center Primary source
Virginia Virginia	Virginia General Assembly Legislature	State	Enacted legislation or regulation	In effect	Operation	Effective date not stated in the source	Not stored as one date — see completion condition	Data center fixtures at 100 percent of cost-approach value (2026 Special Session I budget, Item 3-5.18) Primary source · Archived copy (8 October 2026)
Virginia Virginia	Virginia General Assembly Legislature	State	Enacted legislation or regulation	In effect	Operation	Effective date not stated in the source	Not stored as one date — see completion condition	Data center fixtures assessed by the cost approach for real property tax (Va. Code 58.1-3295.3) Primary source
West Virginia West Virginia	West Virginia Legislature Legislature	State	Enacted legislation or regulation	In effect	Incentive	Several dates apply; see the source	Scheduled 31 December 2055	High impact data center property valuation and tax distribution Primary source

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