An information resource for the Commonwealth of Kentucky

Backup Power & Gas Turbines

What about the gas turbines?

Natural gas turbines are the same proven technology hospitals, universities, airports and military bases rely on for critical power. In data centers they can serve as backup generation or dedicated primary power, but emissions, noise and fuel supply still need to be reviewed project by project.

01The concern

The concern

When residents see gas turbines in a proposal, they worry about air emissions, noise, fuel pipelines and the possibility of a power plant being built in their community. The technology is familiar and widely trusted; the scale, siting and run hours are what determine the local impact.

02What the data says

What the data says

  • Gas turbines are a mature technology used wherever reliability is critical: hospitals, military bases, district energy systems, airports and universities. They can run on natural gas or diesel and can start quickly to back up essential loads.
  • In data centers, turbines can serve as emergency backup during grid outages or as dedicated primary generation in 'bring your own power' arrangements.
  • Emissions per unit of electricity are generally lower than coal and older diesel engines but higher than zero-emission sources. Actual emissions depend on turbine size, run hours, emissions controls and fuel quality.
  • Noise and thermal plume are real siting considerations. Mitigation includes acoustic enclosures, exhaust silencers, setbacks, berms and orientation away from neighbors.
  • Fuel reliability matters as much as the turbine itself. A generator is only as dependable as its pipeline, storage or delivery arrangement.

03What responsible development looks like

What responsible development looks like

  • Disclose the number, capacity, run-hour assumptions and fuel type for every turbine.
  • Site turbines away from residences with setbacks and noise buffers that meet or exceed local standards.
  • Use best available emissions controls, including low-NOx burners where applicable.
  • Limit routine testing to daytime hours and publish the testing schedule.
  • Confirm the fuel supply route and any pipeline, trucking or storage implications for the community.
  • Include a decommissioning and end-of-life plan in the approval record.

04Kentucky context

Kentucky context

Kentucky has extensive natural gas pipeline infrastructure and a history of gas-fired generation, so fuel access and utility experience are available in much of the state.

Air permits for stationary turbines are handled by the Kentucky Division for Air Quality, and permit applications are public records with comment periods.

Under EKPC's Rate DCP tariff and similar structures, dedicated generation serving a data center generally must be transmission-interconnected rather than behind the meter. That distinction shapes whether turbines support only the facility or also regional reliability.

05Sources

Sources

  • Stationary turbine and engine air rules

    Source: U.S. Environmental Protection Agency

  • Air permit records

    Source: Kentucky Energy and Environment Cabinet, Division for Air Quality

  • Rate DCP tariff and Dedicated Resource Rider, Case No. 2025-00140

    Source: Kentucky Public Service Commission

  • Project-specific air permit applications

    Source: Local data center developers

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