A regulatory boundary inside one metro area
Entergy New Orleans answers to the New Orleans City Council, one of only two local authorities in the country with that role over an electric utility. Its rules require net metering to be offered.
Outside the city, utilities answer to the Louisiana Public Service Commission, whose September 2019 decision moved new customers onto avoided-cost export compensation from January 1, 2020.
So two homes a short drive apart, on identical roofs, with identical systems, receive materially different value for the same exported kilowatt hour.
That is invisible from the street and it is not something a statewide guide will flag. Check the utility name on a recent bill and establish which regulator sets your terms before reading any figure in a quote.
What being on the Commission side means
Under the Commission rules you pay full retail for electricity bought from the utility, nothing for solar you consume on site as it is generated, and avoided cost for anything exported.
Avoided cost has run near 3 cents per kWh against a Louisiana retail average around 12 cents, so an exported kilowatt hour has been worth roughly a quarter of a self-consumed one.
That makes self-consumption the whole game. Size to your daytime load rather than your annual total, and ask what share of generation the model expects your household to use directly.
It also makes load shifting and storage more valuable than they would be a few miles away in the city, because the gap they close is four to one rather than close to nothing.
Checking a quote written for the wrong side
Because installers work both sides of the boundary, a template built for one can easily be applied to the other. A Kenner quote built on New Orleans net metering will overstate the project.
Ask which export arrangement the projection assumed: net metering, or avoided-cost compensation. If the answer is not immediate, that is informative.
Ask which avoided cost rate it used, from which utility and which year, since the Commission publishes the rate by utility annually.
Ask for the savings split into avoided purchases at the retail rate and exports at avoided cost. That split is what makes the assumption visible.
What is left to build the number from
The 30 percent federal Residential Clean Energy Credit under Section 25D expired for property placed in service after December 31, 2025, and Louisiana state solar tax credit expired on December 31, 2017.
Section 48E survives at 30 percent for third-party owners under leases and power purchase agreements, so ask what a provider claims and what reaches you in the rate.
What exists is the property tax exemption, full retail value for electricity consumed as it is generated, and avoided-cost compensation for exports under Commission rules.
Ask for the projection built on the Commission arrangement rather than the New Orleans one, with the avoided cost rate identified by utility and year.