Tennessee

Tennessee solar in 2026

Tennessee does not have a statewide net-metering promise to lean on. TVA and the local power company set the rules, so the homeowner job is not to find a magic statewide tariff. It is to make sure the system consumes most of what it produces and that the local interconnection terms are on paper.

Tennessee sun has a west-to-east tilt

Memphis is the strongest city run, Nashville the lightest. That difference is enough to change a quote, but it does not create a statewide export right.

Method: PVGIS v5.2 model runs by Solar Learning Lab on August 18, 2026, using the NSRDB radiation database. Assumptions: fixed roof mount, south facing, 30 degree tilt, 14 percent losses. Your roof will differ.

Tennessee tax treatment is not cash back

In Tennessee, the local power company is part of the deal

A statewide solar summary cannot answer the contract question here. Tennessee has no state net-metering mandate, and the state commission does not set retail electricity terms for TVA's local power companies. The relevant chain is your home, the local power company, and TVA. That is where interconnection and any generation-sale terms are determined.

TVA's Green Connect offering is useful for homeowner resources, guidance on rooftop solar or solar plus battery, and its Virtual Solar Education platform. It is not a statewide retail-credit promise. For owners seeking to sell generation to TVA, the named path is Dispersed Power Production, available to existing generation system owners with qualified facilities up to 80 MW. Don't let a quote blur those distinct programs.

The property assessment rule is worth separating from the energy calculation. Tenn. Code Ann. 67-5-601 caps solar's initial value at not more than 12.5% of total installed cost, including at reappraisal, if the applicable certification or filing is in place. The claimant must submit the relevant documentation to the comptroller by March 1. That can affect assessed value. It does not add cash to a project budget.

Before equipment is ordered, request the written interconnection path and ask who will provide the agreement. Then ask the installer to mark every savings assumption that depends on exported electricity. Nashville Electric Service is a clean reminder of the structure: it generates no power and purchases all of its energy from TVA. A local utility's role is not a minor detail in this state. It is the framework.

The scale of the local entities is another reason not to generalize. Nashville Electric Service reports 472,930 customers. Memphis Light, Gas and Water reports 445,754 electric customers, including 385,014 residential. Knoxville Utilities Board serves nearly 520,000 customers across electric, fiber, gas, water and wastewater. None of those facts substitutes for the terms that apply to your account, but they show why a statewide talking point is the wrong starting point.

TVA Valley Renewable Energy for Home; Tenn. Code Ann. 67-5-601; NES 2025 Fiscal Facts.

Treat the calculator as a load-matching screen

This output illustrates avoided retail purchases under its inputs. It cannot create a sale agreement for surplus generation in TVA territory.

Nashville-area installers to vet

These names can start a local contractor search. The more revealing test is whether each company can explain the current requirements of your own local power company.