Grind Capital Group received unanimous city council approval to build a hyperscale AI data center on 31 acres off Bells Ferry Road — directly behind existing homes. The peer-reviewed research on what happens next to your health, energy bills, water supply, and property value is documented here.
On June 17, 2025, the Marietta City Council voted 7–0 to rezone 31.4 acres at 1751 Bells Ferry Road from Community Retail Commercial to Light Industrial. No independent environmental or health impact study was required before the vote.
| Field | Details |
|---|---|
| Address | 1751 Bells Ferry Road, Marietta, GA 30066 — off I-75, access exclusively via Bells Ferry Road |
| Developer | MMM Acquisitions LLC / Grind Capital Group — Atlanta-based private real estate investment firm |
| Total IT load | 108 megawatts — equivalent to the power draw of approximately 80,000 homes |
| Buildings | DC-1: 213,600 sq ft at 48 MW IT load · DC-2: 133,600 sq ft at 24 MW IT load |
| Building height | 105 feet — taller than an 8-story building, visible from neighboring residences despite grading |
| Power source | On-site substation — developer paying $100M+ to MEAG Power to build it on the property |
| Water cooling | Closed-loop system · Cobb Water confirmed "plenty of capacity" · No daily gallon figure was publicly disclosed |
| Jobs created | Estimated 5–20 permanent positions · Heavily automated · Not a meaningful local employment generator |
| Review required | None. No independent environmental review. No health impact study. Planning commission recommended approval. Council approved unanimously. |
"Essentially, imagine the world's loudest desktop computer fan running behind your house all day."
Cobb County resident · Public comment · Marietta City Council · June 2025All findings are sourced from peer-reviewed research, official government audits, and documented reporting from comparable data center regions.
UC Riverside researchers found that training one large AI model produces air pollutants equivalent to 10,000 round-trip car journeys between LA and New York. These pollutants raise rates of respiratory disease, cardiovascular conditions, and cancer in neighboring communities — and Georgia's grid still relies heavily on fossil fuels.
If you or your family has asthma, allergies, or cardiovascular conditions, you are in the highest-risk category. Georgia's humid summers already stress respiratory health — adding industrial-scale air pollution from a 108 MW facility next door compounds that permanently.
A formal government audit in Virginia found data center grid demand could raise typical household bills by $14–$33 per month by 2040. Wholesale electricity prices near major data center hubs have already risen by up to 267% over five years — and in 2025, Americans paid nearly 10% more for electricity than in 2024.
The developer pays for the substation — not for the long-term grid strain or rate cost-shifting that follows in every comparable region. When a facility drawing the power of 80,000 homes comes online, your monthly bill absorbs the pressure.
A single large data center can consume the daily water equivalent of a town of 10,000–50,000 people. Northern Virginia data centers consumed 2 billion gallons in 2023 — up 63% from 2019. Water treated with chemicals inside these facilities is rendered unsuitable for human consumption and permanently removed from the local water cycle.
Cobb Water said they have "plenty of capacity" — the same thing every comparable utility said before demand arrived and grew year over year. Cobb County has experienced drought conditions, and Georgia summers are intensifying.
Data centers emit high- and low-frequency noise from cooling towers, HVAC systems, and backup generators — 24 hours a day, every day of the year. Residents describe it as "a helicopter hovering," "a freight train that never passes." Virginia's legislative audit formally concluded that "the industrial scale of data centers makes them largely incompatible with residential uses."
The townhome community on Bells Ferry backs directly against this site. The developer's attorney told the council that generators are the only noise concern — thousands of residents in comparable communities, with recordings and active lawsuits, disagree. Once operational, there is no off switch.
Real estate appraisers apply nuisance-based reductions to properties impacted by ongoing industrial intrusions — persistent noise, industrial lighting, and proximity to Light Industrial rezoning all suppress resale values. Virginia's JLARC audit concluded: "the industrial scale of data centers makes them largely incompatible with residential uses." Multiple class-action lawsuits are now active nationally seeking compensation for diminished property values.
The financial benefits flow to Grind Capital Group and government budgets — you absorb the costs in bills, health, and home value. The long-term cumulative cost to residents almost certainly exceeds any tax benefit within the first decade, and unlike the tax revenue, your costs never stop.
The city will point to tax revenue. Here is what residents absorb in return.
Grind Capital Group profits. The city collects taxes. You pay more — in energy bills, healthcare, and home value — every year, without end. This is not for the people of Cobb County.
On June 17, 2025, these seven elected officials voted unanimously to rezone 31 acres of your community from retail commercial to light industrial. No one voted no. No one requested a health impact study. No one asked for a delay.
| Official | Position | Vote | Notes from the record | Contact |
|---|---|---|---|---|
Steve "Thunder" Tumlin Mayor · Re-elected Nov 2025 |
Mayor | Approved | Presides over all council meetings · Re-elected to a fifth term in November 2025 with 50.3% of the vote | |
Cheryl Richardson Ward 1 |
Ward 1 | Approved | Represents the corridor closest to the Bells Ferry Road project site | |
Grif Chalfant Ward 2 |
Ward 2 | Approved | Northwest Marietta residential neighborhoods along I-75 corridor | |
Johnny Walker Ward 3 |
Ward 3 | Approved | I-75 corridor and surrounding established residential neighborhoods | |
Andy Morris Ward 4 |
Ward 4 | Approved | East Marietta residential communities | |
Reggie Copeland Ward 5 |
Ward 5 | Approved | South Marietta neighborhoods | |
Andre Sims Ward 6 |
Ward 6 | Approved | Specifically questioned the developer about heat generation impact on surrounding neighborhoods during the meeting. Developer acknowledged "a lot of heat." Voted yes. | |
Joseph Goldstein Ward 7 |
Ward 7 | Approved | Northeast Marietta communities |
"The proposed data center campus represents a significant opportunity to enhance the property's economic use. This development is anticipated to generate considerable tax revenue for both the City of Marietta and the Marietta City School System."
Marietta City Council staff analysis · June 2025 · No mention of health, noise, water impact, or residential quality of life in the same documentDeKalb County placed a full moratorium on data centers pending independent health studies. Coweta County did the same. Denver withdrew a $9 million tax incentive under public pressure.