Rules by state

Solar and battery interconnection rules in Tennessee

Tennessee, no published statewide interconnection standard. Every threshold below was read out of the document linked at the bottom of this page, and the same rules answer the free screening check.

Who this binds: utilities named in the rule. A utility outside that list sets its own terms, so confirm who serves the address first.

Check a Tennessee address free
How the size is measured: not published

The published limits here are stated in kilowatts without saying whether that is the inverter rating in alternating current or the array rating in direct current. On a system near a threshold that decides which band it lands in, so the checker asks the question rather than choosing an answer.

Ask the utility this, before you sell it

  1. What are your interconnection requirements, tiers, fees, insurance limits and timelines? Tennessee has no statewide standard, so every one of these is set by your local power company and nothing can be pre-qualified from a published state rule.
  2. What is the maximum system size you will interconnect, and is there a queue or cap?
  3. What is the buyback arrangement, and does it run through the Tennessee Valley Authority dispersed power production schedule?
  4. What insurance do you require, and at what size does it begin?

Worth knowing before you quote

Recorded deliberately as an absence rather than omitted, so that a Tennessee screen returns the honest answer instead of falling through to generic screens that imply a state standard exists. The Tennessee Valley Authority publishes a price schedule rather than an interconnection procedure: it contains no capacity tiers, no nameplate definition, no fees, no insurance and no timelines. Appalachian Power is the one Tennessee distributor under state commission jurisdiction and its terms were not read. Tennessee should be treated as a per local power company lookup, not as a state.

Utility programs we have read in Tennessee

Source

Tennessee Valley Authority Dispersed Power Production notice DPP 2025-12 and Price Schedule CSPP effective 1 December 2025

Read and recorded 2026-09-12. Tennessee publishes no state interconnection standard and no state net metering rule, and this is structural rather than an oversight. Nearly all Tennessee retail distribution is done by Tennessee Valley Authority local power companies, municipal systems and cooperatives, which are outside the state regulator definition of a public utility. Terms are set individually by roughly one hundred fifty local power companies within their power contracts.

What to do with this

Check a real address

The rules below are the general case. Run the free check to see which utility serves a specific address, which tier the system lands in, and what to ask.

Run the free check
Installers: keep the answer with the job

GridProjeX holds the project from here, with every value tied to the document it came from and the utility and permit tracks run to permission to operate.

How it works for installers
Utilities: see what applicants are told

The same published rules your applicants read here are the ones your queue sees. GridProjeX is the record both sides work from.

How it works for utilities

Also from CivyxIQ, if they fit what you already do: SolarProjeX for running the crews and the jobs, and Solar Home so the homeowner can follow their own project. Neither is needed to use the checker.