Posey County Is Writing the Rules for the Next Wave of Land Development
New rules for data centers, battery storage, industrial noise and small solar systems could shape how Posey County handles future development — just as Amazon Web Services says it is exploring a possible local data-center site.
Photo: Nyttend / Wikimedia Commons · Public Domain
The Short Version
Posey County is considering a substantial rewrite of its development rules for data centers, battery energy-storage systems, industrial noise and transportation, along with a narrower change affecting small Tier 3 solar systems. The timing matters. Amazon Web Services has now confirmed that it is in the early stages of considering a Posey County data center. No permit has been filed, and the public hearing continues October 1. [1] [4]
Zoning usually does not sound like an environmental story. Until the zoning code begins deciding how much distance should separate a major industrial facility from a home, what happens if a project affects a neighboring water well, how construction traffic will use rural roads, or what an applicant must study before converting a large tract of land.
That is the point Posey County has reached.
The Area Plan Commission opened a public hearing September 24 on amendments to the county’s Unified Development Ordinance. The package reaches well beyond routine cleanup of zoning language. It establishes or revises rules for data centers, battery energy-storage systems, industrial noise, transportation and Tier 3 solar systems. [1] [3]
And the rules are no longer being discussed in a vacuum.
The Story Changed at the September 24 Hearing
Amazon Web Services is looking at Posey County.
An attorney representing Amazon Web Services told the commission during the September 24 hearing that the company is in the early stages of considering a data center in Posey County. He said AWS had moved away from an earlier prospective location and was looking at another industrial location closer to highways. [4]
Amazon has said it will not file a permit until the county’s UDO process is complete. The company has not publicly identified a final site. [4]
That changes the context without changing the basic issue. Posey County is still writing its standards before an actual data-center permit is filed. But officials are now doing so while a major prospective developer is watching the process and participating in it.
AWS attorney Mike Schopmeyer argued during the hearing that the current draft was too restrictive and needed additional work. That is the company’s position, not a conclusion about whether the proposed standards are too strict or too loose. Public comment at the September 24 hearing focused heavily on the data-center provisions. [4]
The hearing was continued to October 1 at 5:30 p.m. at Hovey House in Mount Vernon. [3] [4]
This Is More Than One Data-Center Ordinance
The amendment package touches several kinds of development that can require substantial land, utility capacity or new infrastructure. They are related, but the county is not treating them all the same.
Data Centers
A new regulatory framework covering siting, setbacks, power and water information, noise, roads, natural resources, construction and eventual decommissioning.
Industrial Noise & Roads
New standards would apply to qualifying development in I-1 and I-2 industrial districts, including noise analysis and construction-transportation planning.
Tier 3 Solar
Despite the name, this is the small end of Posey County’s solar classifications: one acre or less and behind-the-meter generation for one property owner.
Battery Storage
A separate ordinance would establish where utility-scale battery storage can be considered and set standards for drainage, emergency planning, review and decommissioning.
The Data-Center Rules Carry Most of the Weight
Posey County’s draft describes data centers as large industrial facilities that can use substantial amounts of electricity, water and land. It would not allow a data center simply by right. A project would have to move through a special-exception process in an eligible industrial district and comply with the additional development standards. [1]
The draft separates data centers into major and minor facilities, with a major center defined as more than 100,000 square feet. More important from a land-use standpoint are the requirements surrounding the building.
The posted draft calls for 1,000 feet from certain qualifying residences on adjacent land and 500 feet from listed property boundaries and public rights-of-way.
The proposed industrial standard sets a 50 dBA Leq limit at the property line. Where existing ambient sound already exceeds that level, the project could not increase it.
Projects using wells would face hydrology testing requirements along with provisions for testing and mitigating documented impacts to certain neighboring wells.
Applicants would analyze wetlands, water resources, soils, vegetation and wildlife habitat and identify potential mitigation measures.
Engineering studies would address construction routes, road repair, emergency access and traffic timing, including conflicts with school buses and agricultural planting or harvest periods.
Before commercial operation, the draft requires financial assurance equal to 125% of the estimated project decommissioning cost, with later reviews.
Taken separately, none of those provisions tells the entire story. Together, they show what the county is trying to regulate: not just the data-center building, but the land, utilities, roads, water, noise and long-term obligations that can come with it. [1]
The zoning line on the map is only the beginning.
A large industrial project affects more than the parcel underneath the building. The practical footprint can include electric infrastructure, cooling systems, drainage, roads, construction traffic, noise and changes in how surrounding land can be used. Posey County’s draft attempts to bring many of those secondary effects into the review process before construction begins.
The natural-resource report is especially relevant for LWR
One of the more notable provisions is a required Natural Resources Impact Report for data centers. The draft calls for analysis of topography, geology, vegetation, soils, water resources including wetlands, and wildlife habitat. It also calls for consideration of site-specific recommendations from the Indiana Department of Natural Resources and Indiana Department of Environmental Management. [1]
The report would identify areas such as flood zones, wetlands, watercourses and bat habitat when applicable, along with possible measures such as open space, erosion control or habitat replacement. [1]
That does not prevent development by itself. It does, however, put environmental conditions into the local land-use record before a final development plan is approved.
The Tier 3 Solar Amendment Is Easy to Misread
The phrase Tier 3 solar sounds like it should mean the largest class of solar development.
In Posey County, it means almost the opposite.
The county’s current UDO classifies ground-mounted solar systems by acreage and how the electricity is used. [2]
Electricity is sold to utility transmission lines.
Electricity is used primarily for on-site use.
One landowner, with electricity generated exclusively behind the meter for that property owner.
The September Tier 3 amendment is not a rewrite of Posey County’s utility-scale solar rules. The proposed language focuses on the small SECS-3 class, including how those systems are treated in residential districts and who gives final development-plan approval. [1] [2]
Under the draft, SECS-3 systems would be listed as permitted accessory uses in the R-1, R-2 and R-3 residential districts. The proposed language also changes final development-plan approval for Tier 3 projects from the Area Plan Commission to the APC administrator. [1]
That is a procedural change with a much smaller physical scale than the data-center or battery-storage provisions. The larger SECS-1 and SECS-2 categories remain subject to the county’s broader renewable-energy framework.
In other words, anyone reading only the hearing notice could reasonably assume Posey County was rewriting its rules for large solar farms. The posted amendment does not appear to do that. Its immediate target is small, behind-the-meter solar.
Battery Storage Would Get Its Own Rulebook
The updated amendment packet also contains a separate framework for Battery Energy Storage Systems, or BESS. [1]
Under the draft, a BESS would not be permitted by right in any zoning district. It could be considered only as a special-exception use in an I-2 heavy-industrial district. [1]
The proposal addresses several issues that matter beyond the fence line. The site would have to contain hazardous or contaminated substances within the project area and could use impermeable surfaces or approved stabilization methods to protect the underlying water table from an accidental release. Battery facilities would also fall under the industrial noise and transportation standards. [1]
Applicants would have to provide emergency-response planning, project mapping and drainage information. The development plans would identify natural features around the site, including floodplains and wetlands where present.
The draft also requires decommissioning financial assurance equal to 125% of the estimated cost, with inflation adjustments and periodic engineering review. [1]
That end-of-life language matters because land-use decisions can outlast the company, technology or market conditions that existed when a project was first approved. A decommissioning requirement determines who is financially responsible if the facility eventually stops operating.
Why This Matters Beyond an Industrial Park
Posey County has room for industry. It also has working farmland, rural homes, river bottoms, wetlands and some of southwestern Indiana’s most important public wildlife acreage.
Hovey Lake Fish & Wildlife Area, for example, covers approximately 7,404 acres in the Ohio and Wabash River floodplains. The property includes a 1,400-acre oxbow lake, sloughs, marshes and extensive bottomland hardwood forest. [5]
That does not mean the prospective AWS development is planned near Hovey Lake. No final data-center site has been publicly announced. The point is broader: countywide land-use rules have to work across a county where industrial development, agriculture, homes, transportation corridors and natural systems exist relatively close together.
Southwestern Indiana is already seeing those uses compete for some of the same basic ingredients: available acreage, electric capacity, road access, water and locations with relatively few nearby residences.
Zoning determines what happens when those interests meet on the same map.
The important decision happens before the bulldozers.
Once a specific project is proposed, much of the public discussion tends to center on that developer and that parcel. A development ordinance works one step earlier. It sets the baseline every future applicant is expected to meet. Setbacks, water studies, road protections, habitat review and decommissioning requirements can therefore influence land conversion long after the current hearing is over.
For more on the river and wetland systems that make the western edge of Posey County unusual, see The Wetlands That Keep the Lower Ohio River Wild .
The October 1 Hearing Is Now the Next Checkpoint
The September 24 meeting did not finish the process. Discussion and public comment continue October 1.
Because the ordinance remains a draft, individual numbers and requirements can still change. The most useful way to follow the next round is to watch the actual language rather than treating the current draft as final.
What LWR will be watching
- Whether the proposed data-center setbacks remain at their current distances or are revised.
- Whether water-use, hydrology and neighboring-well protections remain in the final language.
- Whether the Natural Resources Impact Report stays intact, including wetlands and wildlife-habitat review.
- How the county resolves comments on industrial noise, construction traffic and road-repair requirements.
- Whether the BESS emergency-response and decommissioning provisions change.
- Whether the proposed streamlined approval process for small SECS-3 solar systems remains.
- What revisions AWS or other prospective developers ask the county to consider before the ordinance moves forward.
There is also a larger question that will not be answered by any single setback number: how much of the cost of a new industrial use should be handled inside the project boundary, and how much should be allowed to spill onto neighboring land, roads, utilities or natural resources?
That is ultimately what many of these technical zoning provisions are trying to sort out.
Key Takeaways
- Posey County’s UDO hearing is now underway, with the next session scheduled for October 1.
- Amazon Web Services has confirmed it is in the early stages of considering a Posey County data center, although no final site or permit has been announced.
- The posted data-center draft addresses far more than building placement. It includes water, noise, roads, natural resources and eventual decommissioning.
- Tier 3 solar is not utility-scale solar in Posey County. It means a system of one acre or less serving a single property owner behind the meter.
- Battery storage would be limited to consideration as a special exception in the I-2 industrial district under its own proposed standards.
- None of the posted language is final yet. The October 1 continuation could still change significant portions of the ordinance.
Frequently Asked Questions
Has Amazon announced a data center in Posey County?
No. Amazon says AWS is in the early stages of considering a Posey County project. An attorney representing AWS said the company is examining a different industrial location after moving away from an earlier prospective site. No final location or permit has been announced as of September 25, 2026.
When is the next Posey County UDO hearing?
The continued public hearing is scheduled for October 1, 2026, at 5:30 p.m. at Hovey House, 330 Walnut Street in Mount Vernon.
Is Tier 3 solar a large solar farm?
No. Under Posey County’s current UDO, SECS-3 covers solar systems of one acre or less on one landowner’s property, with electricity generated exclusively behind the meter for that owner.
Would data centers be automatically allowed under the new rules?
No. The posted draft says data centers would not be permitted by right. They would require special-exception approval in eligible industrial zoning districts and would also face additional development-plan requirements.
Does the draft address wildlife or wetlands?
Yes. The proposed data-center application process includes a Natural Resources Impact Report addressing subjects including vegetation, soils, water resources, wetlands and wildlife habitat. The BESS proposal also requires project mapping and site information identifying natural features such as floodplains and wetlands where present.
Have these rules already been adopted?
No. The provisions discussed here are proposed amendments from the county’s posted draft. The public hearing continues October 1, and the language can still change before final action.
References
[1] Posey County Area Plan Commission. Updated Draft Amendments for Discussion at the September 24, 2026, Public Hearing. Posey County Government, September 2026.
[2] Posey County Area Plan Commission. Posey County Unified Development Ordinance 2026. Chapter 4, Renewable Energy Conversion Systems.
[3] Posey County Area Plan Commission. Legal Notice of Public Hearing — September 24 and October 1, 2026. Posey County Government.
[4] Loesch, Sarah. Amazon looking at Posey County for potential data center development. Evansville Courier & Press, September 25, 2026.
[5] Indiana Department of Natural Resources, Division of Fish & Wildlife. Hovey Lake Fish & Wildlife Area.