The rate was halved, and the date matters
The council approved the change on 22 October 2024 and it took effect on 1 January 2025. The city announcement is direct about it: starting 1 January 2025, solar customers will receive $0.05 per kilowatt-hour for the excess energy they generate.
Against a previous average of $0.1065 per kWh, that is a reduction of more than half. Applied across the life of a system it is a large change to the return, and it is large enough to change whether a marginal project is worth doing.
The change was contested publicly rather than passing quietly, which is worth knowing because it means the arguments on both sides are on the record and the policy has attracted attention. A rate that has been fought over once can be revisited.
For your purposes the practical point is narrow: check the date on any Denton solar material you are reading. Anything written before late 2024 is describing roughly double the current buyback, and a payback figure built on it is wrong by a wide margin.
Whether existing systems are grandfathered is not stated
The city announcement sets out the new rate and the reasoning behind it. It does not say whether the change applies only to new solar customers or to everyone, and it does not describe a grandfathering period or transition arrangement.
That silence matters to two different people. If you already have a system installed under the old rate, you need to know whether your compensation changed on 1 January 2025. If you are buying now, you need to know whether the rate you are quoted is protected at all.
We are not going to infer an answer from the absence of one. Ask Denton Municipal Electric directly, ask for it in writing, and keep that answer with your project paperwork.
Ask a second question at the same time: what process would be followed to change the rate again, and what notice customers would receive. A rate set by council vote can be revised by council vote, and knowing the mechanism is more useful than assuming stability.
There is no provider to switch to
Most Texas solar advice is built around choosing a retail electricity provider and a buyback plan, because most of the state is deregulated and that choice is where the value sits. Denton is not in that market.
Denton Municipal Electric has been owned by the city since 1905 and is the electricity provider for the city. Residents do not select among competing retailers, so there is no shopping exercise to perform and no plan comparison to run.
That removes both the work and the escape route. Where a Houston customer unhappy with a buyback rate can change plans at the next renewal, a Denton customer cannot, so the rate you are offered is the rate for as long as the council leaves it alone.
It also means self-consumption carries more weight in the design here than it would in a market where you could shop for a better export rate. At $0.05 per kWh for exports, electricity you use as you generate it is worth substantially more, so size the system against your daytime draw.
The exemption to file for, and the federal change
Texas Tax Code Section 11.27 exempts 100 percent of the appraised value an installed solar energy device adds to your home. Form 50-123 must go to your county appraisal district, and the deadline for the current tax year is generally 30 April.
It is not automatic and nobody files it on your behalf unless you have arranged for that. Ask whether your installer assists, and calendar the deadline regardless of the answer.
The 30 percent Residential Clean Energy Credit under Section 25D expired for property placed in service after 31 December 2025. Combined with the local buyback cut a year earlier, a Denton project now faces two significant reductions that most published material predates.
Section 48E survives at 30 percent for third-party owners, so a lease or power purchase agreement is worth pricing here specifically, since the provider can still claim it. Ask them to show the comparison against a cash purchase rather than assert that it is better.