The Tennessee Green Fleets (TGF) Certification Program is an opportunity for fleets that are based or operate in Tennessee to receive certification for their efforts to reduce petroleum consumption, use alternative fuels or advanced vehicle technologies, and reduce emissions. Tennessee Clean Fuels (TNCleanFuels) will administer this via collaboration between the state’s two Clean Cities coalitions, the East and Middle‐West Tennessee Clean Fuels Coalitions. TNCleanFuels will review your fleet’s fuel use and vehicle data to score your efforts. Fleet will be judged using a three‐star system and—for those fleets that achieve at least one‐star certification—will be recognized for their hard work at our annual awards event.

This awards program will certify fleets based on actual impacts and other actions they have taken to TGF Logoimprove fleet sustainability and efficiency. The purpose of this program is to take a look at your vehicular operations to review and attest to your actions that reduce petroleum consumption, reduce greenhouse gas (GHG) emissions and increase the number of alternative fuel vehicles in your fleet, while also investigate the successes you’ve made on the administrative side that support quality and quantifiable achievements.

Certain members in TNCleanFuels can have their TGF review at no cost; otherwise, there is a fee for TGF review. See the Important Information section below.

The 2019 class of ‘Tennessee Green Fleet’ certified fleets.

TNGreenFleet fleet inductees, 2018

The 2018 class of ‘Tennessee Green Fleet’ certified fleets.


The 2017 class of ‘Tennessee Green Fleet’ certified fleets.


The 2016 class of ‘Tennessee Green Fleet’ certified fleets.

Eligible Vehicles

  • Light‐duty commercial and passenger vehicles
  • Medium‐duty and Heavy‐duty trucks and on‐road equipment
  • Off‐road equipment that can include construction equipment, airport equipment including luggage and airplane management vehicles, and locomotives

Scoring/Points Categories & System

TCF will use a two‐part scoring system to determine at what level each fleet qualifies for “Tennessee Green Fleet” certification. The scoring system is designed to measure actual performance in achieving the above noted goals while also recognizing steps taken to reach the goals. Fleets will earn points for and be scored on these items:

1. Achievement Points (total of 200 points)

  • Greenhouse Gas Emissions reduction: The tons of CO2 reduced
  • Percent Petroleum Use reduction: The percent reduction in total petroleum fuel (gasoline & diesel) use
  • Percent increase in AFVs (alternative fuel vehicles) in the fleet: The percent increase in the number of AFVs in use in the fleet (vehicles included in this accounting must be using alternative fuels in the fleet on a regular and on‐going basis)

2. Criteria Points (total of 19 points)

  • Strategic Plans: Do you have a strategic plan, that is written down, and that includes petroleum use, GHG and criteria pollutant reduction goals? Do you have an idle reduction plan? Do you have leadership support for the plans and goals?
  • Partnerships & Communications: Do you partner with any organizations to support, deploy, or assist you in your efficiency, alternative fuel, or advanced technology efforts? Are you communicating your successes internally (within the company or organization) and externally (to the outside world)?
  • Technology & Equipment: Are you using telematics to help inform your processes, or do you own and operate any alternative fuel refueling infrastructure? Do you use bio‐based lubricants?

One star = at least 40 total points
Two stars = at least 80 total points
Three stars = at least 120 total points *

* Three‐star fleets also MUST have a strategic plan, have leadership support for the plan, and be communicating internally and externally their actions.

Application Process & Data Needs

Each fleet that wishes to apply can submit data at any point during the year but needs to have its data submitted to TNCleanFuels by the deadline of July 29 in any year to be eligible to be certified in that year. The first step is to call Jonathan Overly and let him know of your intention to submit and begin discussing your fleet and data – (865) 974‐3625. The specific data required is listed below and is applicable to the most recent year of data that the fleet has:

  1. Total annual fuel use for all used fuels (i.e., gasoline, diesel and alternative fuels) by the fleet, separated by fuel in gallons or GGEs for a recent 12-month period.
  2. A list of all vehicles in the fleet including fleet numeric totals by type, clarifying which ones operate on any alternative fuel or advanced technology and which ones operate on gasoline or diesel. It does not have to list every vehicle but can group vehicles by type such as police sedans, SUVs, work trucks, mowers, or heavy‐duty trucks.
  3. Finally, the lead fleet contact will need to answer a series of questions about the strategic plans and supporting actions they are taking toward fleet improvements. That will be handled during a phone call with Jonathan.
  4. If any further data is needed, we will contact you after receiving the above.

Any fleet may break out a specific unit of operations within the fleet and seek certification for just that set of operations. In other words, you can partition your fleet and have only part of the fleet analyzed, such as separating on‐road versus off‐road vehicles, or area‐confined operations. For example, a municipality or county could include just refuse, police or parks & recreation department’s vehicles in the review. It could also include just the delivery trucks or tractor trailers if part of a distribution business. Please contact Jonathan Overly with any questions.

Important Information

    • Annual deadline for submitting data to TCF: July 29
    • Where to submit: Send data via email to jonathan[at]
    • When will fleets be notified? Fleets will be notified of the results from their analysis within a month of their supplying the needed information.
    • Where will the awards be provided? We are partnering with the Tennessee Department of Environment and Conservation and their Sustainable Transportation Awards Forum (click to visit) for the awards ceremony.


  • What does it cost to get our fleet analyzed and potentially certified? Any fleet that is a dues‐paying member in Tennessee Clean Fuels at the Silver level ($1,000) level or higher can have their fleet data analyzed at no cost. Fleets that are not members at the Silver level or above may have their fleet’s data analyzed for a fee of $249. This fee covers our time to review and analyze your fleet’s data, get additional information as needed from you, and assist you in making plans to achieve at least One-star (or greater) certification as necessary.

NOTE: TNCleanFuels is considering adding calculations for criteria pollutants of concern in Tennessee in an expansion of the TGF Program in a future year. Additionally, there may be future modifications of the scoring system to better assess fleet actions and their benefits to communities across Tennessee.

Certified Fleets

3 Star


2 Star


1 Star


Certified Fleets List by Year & Level Certified

2022Clarksville-Montgomery County School System • Greeneville Police Department • Hancock County Schools • NetTrans
2021Cancelled due to COVID
2020Cancelled due to COVID
2019ABM Aviation, BNAORNL • Waste Managment (Jackson, TN fleet) fleet • TN State Parks Golf Trail (electric cart fleet)Clean Sweep, Inc.
2018City of Knoxville - mowersAthens Utility Board • Great Smoky Mountains National Park • Greater Dickson Gas Authority • WeGo Public Transit
2017Franklin Transit Authority - TMA Group
• Sevier County Utility District
• City of Sevierville
• Knoxville Utilities Board
• Middle Tennessee Natural Gas
• Piedmont Natural Gas – Tennessee Fleet
2016Waste Management (Antioch, TN fleet)
• UPS (TN Class-8 fleet)
• Sullens Transport
Common Grounds Landscape Management
• Turf Managers, LLC
City of Kingsport (Police fleet)
• Gibson County Utility District
• Scott Appalachian Industries
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Thanks to our Members