What electricity charges remain after installing solar in Texas?

Why a solar home can still have an electricity bill

Rooftop solar can reduce electricity purchased from the grid, but not every item on an electricity bill necessarily changes with imported kilowatt-hours.

A bill can therefore remain even when annual solar production approaches annual household electricity use. The exact result depends on the applicable tariff, retail plan, service territory, and how exported electricity is credited.

The useful distinction is not simply “solar charge” versus “non-solar charge.” It is whether a charge varies with grid consumption, remains fixed, or depends on the terms of the electricity plan.

How Texas electricity charges are structured

Note: Specific charge types, amounts, and rider names vary by service territory, tariff, REP plan, and municipal/cooperative arrangement.

Fixed charges that may remain regardless of solar production

Some Texas delivery tariffs and retail plans include recurring charges that do not vary directly with monthly electricity consumption. Where they apply, reducing imported kilowatt-hours does not by itself remove those charges.

In competitive retail areas, the exact combination of delivery and retail-provider charges depends on the applicable TDU tariff and REP plan. Municipal utilities and cooperatives use their own tariff structures.

Consumption-dependent charges solar can reduce

Self-consumed solar can reduce charges that are assessed on electricity imported from the grid. That can include energy supply and, where the tariff bills delivery volumetrically, portions of delivery cost.

Electricity imported at night or whenever household demand exceeds solar production remains subject to the applicable import charges.

Why export credits and bill charges are separate questions

Export compensation is governed by the applicable retail plan or utility arrangement. A credit for electricity sent to the grid does not automatically mean that every other line item on the bill is offset.

Some arrangements may allow credits to offset a broader portion of the bill; others may apply credits more narrowly or impose limits and conditions. The relevant plan documents determine the result.

That is why a homeowner should review both sides of the bill: what is charged for electricity imported from the grid, and how electricity exported to the grid is credited.

Municipal utilities and electric cooperatives

Municipal utilities and electric cooperatives generally provide retail service under their own tariffs rather than the REP/TDU retail-choice structure used in competitive areas of Texas.

Their fixed charges, consumption charges, solar credit rules, and interconnection policies can therefore differ materially from competitive-market arrangements.

Check the tariff and distributed-generation policy published by the utility serving the property.

What to check on an actual bill

1. Identify charges that repeat even when usage changes.
2. Identify charges billed per imported kWh.
3. Review the plan or tariff governing exported solar electricity.
4. Check whether credits can offset only energy charges or a broader bill balance.
5. Confirm whether the property is served by a competitive REP/TDU structure, municipal utility, or cooperative.