Prolepsia forecastYes / no
Will Indiana enact a data center moratorium by December 31, 2028?
As of 6 October 2026, Prolepsia puts the chance of yes at 15%.
15%chance of yes
How Prolepsia reasons
The report Prolepsia wrote with this forecast.
TL;DR
The saved forecast is 14.9% Yes and 85.1% No for enactment by December 31, 2028. Indiana’s opposition to data centers is substantial, but the state’s demonstrated response favors safeguards and local restrictions rather than the statewide statutory suspension required for Yes.
Key evidence
- The enacted policy is study and compensation, not suspension. HEA 1406 requires examination of incentives, utility costs, water supply, and environmental effects, with findings due November 1, 2026. HEA 1210 creates a local-payment mechanism associated with data-center tax exemptions. Neither pauses development (Indiana legislative synopsis).
- The governor still leaves a path for new projects. In September 28, 2026 remarks, Mike Braun called for developers to supply electricity, improve host communities, and stop seeking local abatements. That supports tougher development terms, not an announced statewide halt (WFYI).
- Senate leadership is changing, but moratorium support is unproven. Republicans endorsed Chris Garten on August 18, 2026 and gave him responsibility for planning the 2027 session. His ratepayer-protection agenda creates an opening for stronger legislation without establishing support for a pause (leadership announcement; policy priorities).
- Backlash has a competing policy outlet. October 5 reporting documents extensive local opposition alongside industry–union mobilization for enforceable guardrails instead of moratoria (Mirror Indy).
- National proposals have outpaced enactment. NCSL’s September 15 inventory lists 16 proposing states, none marked enacted. Pending cases and differing coverage mean this is not a completed set of comparable trials (NCSL).
Uncertainties
The decisive uncertainty is whether Republican concern about household costs and local impacts becomes support for a mandatory statewide suspension. The forthcoming study’s recommendations and private legislative negotiations remain unknown.
A serious reliability, affordability, or water problem could make a temporary pause attractive. Grandfathering existing agreements could soften opposition. Conversely, effective tariffs, environmental safeguards, incentive reform, and preserved local authority could address the backlash without triggering Yes.
The legal distinction matters: local moratoria, executive orders, incentive suspensions alone, and ordinary permitting conditions do not qualify. A mandatory statewide statutory pause covering all new facilities above 100 MW can qualify even if temporary.
Read the full report
TL;DR
The saved forecast is 14.9% Yes and 85.1% No for Indiana enacting a qualifying statewide data-center moratorium by December 31, 2028. Indiana’s demonstrated policy favors development with safeguards and local control, not a mandatory statewide suspension. The decisive signal is Republican leadership backing qualifying statutory language, rather than another local pause or proposal to cut incentives.
Context
As of October 6, 2026, the reviewed evidence identifies no qualifying Indiana enactment and no verified statewide-moratorium bill advancing toward enactment. The completed legislative session produced financial arrangements and a study mandate, while local governments imposed their own restrictions (Indiana legislative synopsis; WFYI session review). This is a bounded finding, not proof that no draft or private negotiation exists.
The question is narrower than whether Indiana will restrict data centers. Yes requires an enacted statute or constitutional provision imposing a mandatory statewide suspension of approval, permitting, construction, interconnection, or operation. Coverage must encompass all new data centers or a subset including all new facilities above 100 MW per facility. Local pauses, executive orders, incentive suspensions alone, and conditions under which compliant projects remain permitted do not count. Temporary pauses and specified grandfathering exemptions can count.
Evidence
The historical backbone is an emerging national legislative movement with few completed statutory successes. NCSL’s inventory, updated September 15, 2026, lists 16 states with moratorium proposals. Seven entries are marked failed or vetoed, eight introduced or continued, and one passed by the legislature; none is marked enacted. Indiana is not listed (NCSL). This supports a low starting expectation for enactment. It does not support treating the inventory as 16 independent, completed trials. Pending proposals remain unresolved, and their coverage differs.
Maine shows how close a pause can come without becoming law. LD 307 was vetoed on April 24, 2026, and the veto was sustained on April 29 (official legislative record). Governor Janet Mills said she supported a temporary moratorium in principle but objected to the absence of an exemption for a particular redevelopment project (veto explanation). The lesson cuts both ways: economic commitments can block enactment, but carefully drawn exemptions can help build a compromise.
New York illustrates the importance of the legal mechanism. A11560/S10642 passed both chambers on June 4, 2026, but the reviewed record did not establish statutory enactment (bill record). Governor Kathy Hochul’s July 14 statewide pause was explicitly an executive order (governor’s announcement). An Indiana version enacted only through executive authority would resolve No.
Indiana’s own legislative record points toward less restrictive responses. WFYI’s March 2, 2026 review reported that nearly a dozen related proposals produced little new regulation before the session ended on February 27. HB 1245, a utility-demand study proposal, never advanced beyond first reading. HB 1333’s controversial attempt to ease development on certain agricultural land also failed (session review). Failure to facilitate development shows resistance to preemption. It does not establish support for a statewide freeze.
The enacted measures are more revealing. HEA 1210 and HEA 1406 were signed on March 12, 2026 (governor’s bill register). HEA 1210 provides a local-payment mechanism tied to data-center tax exemptions, capped at 1% of the sales/use taxes otherwise unpaid on electricity—not 1% of the electricity bill. HEA 1406 requires a study of incentives, utilities, water, and environmental effects, with a report due November 1, 2026 (legislative synopsis). Neither suspends development. The study creates a concrete opportunity for the next session, but its conclusions were not verified at the forecast date.
The governor’s current preference is development on tougher terms. On September 28, 2026, Braun called for companies to stop seeking local abatements, demonstrate community benefits, and build the electricity they need, while continuing to promote Indiana’s technology ambitions (WFYI). I read this as support for conditional development, not a statewide suspension. House Speaker Todd Huston’s December 12, 2025 commentary explicitly opposed blanket moratoria, though that statement is older than the governor’s remarks (authored commentary).
Senate leadership provides the strongest reason not to assume the previous session’s approach is fixed. On August 18, 2026, Senate Republicans endorsed Chris Garten as the next president pro tempore and assigned him planning responsibility for the 2027 session. Formal selection remained ahead (caucus announcement). Garten’s earlier agenda included preventing residential rate increases attributable solely to subsidizing data centers and certain other large users (January 12 priorities). That is meaningful agenda-setting access for affordability concerns. It is not demonstrated support for a moratorium.
Local opposition is broad. The July 6, 2026 inventory reported at least 17 counties with temporary moratoria, 11 with ordinances, and two with bans (WFYI). October 5 reporting cited an August inventory of at least 24 counties with moratoria and three with bans (Mirror Indy). These are the reported snapshots, not a standardized time series; definitions and coverage need not match, and categories should not be added together. Boone County’s primary record confirms a unanimous pause on new applications in unincorporated areas from June 16, 2026 through June 15, 2027 (county announcement).
Opposition also has alternatives to a statewide stop. Farm Bureau’s August 24 account of its August 22 delegate session emphasized incentive repeal, water safeguards, and property rights, rather than verified statewide-pause support (policy account). October 5 reporting describes an industry–union coalition advocating enforceable electricity, environmental, and community-benefit guardrails instead of moratoria. An industry-funded August survey reported construction support rising from 19% to 44% after safeguards were described, but its full methodology was not verified (Mirror Indy). That result is directional evidence of a possible compromise, not a reliable measure of support for this market’s exact policy.
Electricity impacts remain a two-sided risk. Indiana Michigan Power’s August 26, 2026 proposal projected approximately $59 million in 2027 bill reductions and a three-year residential rate freeze, partly attributed to large-customer revenue. Those were utility-sponsored proposals, not approved or realized benefits (utility announcement). They give development supporters an argument for cost allocation instead of suspension. They do not prove that every Indiana community is protected from future costs or reliability problems.
The practical route is legislation. Indiana does not offer an ordinary citizen-initiative route around the General Assembly (Election Division brochure). Braun is not an absolute legal veto point: an override requires a majority of elected members in each chamber, rather than two-thirds (Article 5, Section 14). The main obstacle is assembling a Republican-backed legislative coalition. The remaining 2027 and 2028 opportunities leave time for that coalition to change.
What's non-obvious
More local moratoria do not necessarily mean a statewide moratorium is next. Local control can normalize pauses and increase pressure on legislators. It can also absorb that pressure by letting resistant communities reject projects while receptive communities proceed. The latter path fits the state’s current preference for safeguards and local choice.
The most plausible Yes pathway is a temporary, grandfathered statutory pause, not a permanent ban. It could preserve existing commitments while suspending new approvals pending an objectively specified condition. That makes enactment possible without a wholesale rejection of development. But cutting incentives, tightening tariffs, and strengthening water rules are politically available responses that still resolve No.
Uncertainties
The central gap is coalition support. Garten’s elevation demonstrates influence, not a commitment to suspend development. Private drafts, committee discussions, and the forthcoming study’s recommendations were not verified. Actual bill text, public leadership commitments, and recorded committee votes would clarify whether concern is becoming a qualifying enactment effort.
Infrastructure evidence is also incomplete. The research did not establish an Indiana-wide data-center grid emergency, but that does not rule out future reliability, affordability, or water shocks. Firm contracted load, interconnection timing, approved tariffs, and documented local resource impacts would help distinguish manageable growth from pressure for suspension.
Finally, operative language controls. A broadly described moratorium could exclude facilities it must cover, merely authorize discretionary action, or become ordinary conditions before enactment. A qualifying temporary law could count despite later expiry, repeal, or invalidation. These legal distinctions preserve a meaningful Yes risk while leaving 85.1% No as the saved forecast.
Forecast history
| Date | Forecast |
|---|---|
| 15% chance of yes |
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The question
Imported from Polymarket. This yes/no question comes from a single Polymarket market.
How it resolves
This market will resolve to "Yes" if the State of Indiana enacts a law or constitutional provision that establishes a statewide moratorium on new data centers between market creation and the specified date, 11:59 PM ET. Otherwise, this market will resolve to "No". A statewide moratorium on new data centers refers to a binding policy with legal force that generally prohibits or suspends the approval, permitting, construction, grid interconnection, or operation of all new data centers, or a subset of data centers that includes all new data centers with an interconnection capacity above 100 MW per facility (requested or nameplate), throughout the state. Suspensions of tax incentives, exemption certifications, or economic development awards alone will not qualify, nor will a moratorium adopted by a local government or limited to part of the state. Specific exemptions (e.g., for specified applications, executed agreements, or interconnection requests) do not prevent a measure from generally applying to all new data centers, or a qualifying subset of new data centers, provided that data center approval, permitting, construction, grid interconnection, or operation is prohibited by default, rather than permitted subject to conditions or restrictions. Conditions on the resumption or termination of a suspension do not make a measure one that permits subject to conditions; a measure that suspends approvals, permitting, construction, or interconnection until a specified condition is satisfied qualifies. Enactment occurs when a bill becomes law under the state's constitution and laws, whether by gubernatorial signature, veto override, becoming law without signature, approval at a statewide referendum election, or any other legal mechanism by which statutes can be enacted. For an initiated or referred statute or constitutional amendment, or other voter referendum, the relevant law is considered to have been enacted on the election day on which it was approved, as reflected in the certified results, regardless of when the measure is certified or takes effect. Passage by one or both chambers, or a Governor's announced intent to sign, is not enactment. Executive orders, agency orders, and other measures which are not statutory or constitutional do not qualify as enactment regardless of legal force. A provision removed by line-item veto is not enacted unless the veto is overridden as to that item. The operative text of the measure at enactment controls; provisions amended out before enactment do not qualify. The moratorium provision must be mandatory on its face. A statute that merely authorizes a state agency or the Governor to impose a moratorium at their discretion does not qualify. A statute that directs suspension of approvals or interconnection upon a specified condition qualifies only if the condition is objectively determinable and is not deferred to be determined by the implementing agency's findings, certifications, or completion of its own proceedings. This market resolves based on the date of enactment, not the effective date. Resolution will not be affected by failure to implement a law, judicial invalidation, repeal, or expiry that follows a relevant enactment, or an effective date that comes after the date of enactment. The primary resolution source will be official information from the state government of Indiana; however, a consensus of credible reporting may also be used.
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