Common Solar Billing Errors in Texas and How to Fix Them

Why Solar Billing Errors Are So Common in Texas

Solar billing in Texas involves multiple parties — your Retail Electric Provider handles your energy charges and buyback credits, your TDU (Oncor, CenterPoint, or AEP) handles delivery charges and metering, and your solar installer configured the system that feeds power back to the grid. With this many moving parts, billing errors are surprisingly frequent.

The deregulated market adds complexity because each REP has its own solar buyback plan structure. Unlike states with standardized net metering rules, Texas solar bills vary significantly between providers, making it harder to spot when something is wrong. Many homeowners in Houston, Dallas, and Fort Worth discover they have been overcharged for months before catching the mistake.

Missing or Incorrect Solar Credits

The most common billing error is solar generation credits that never appear on your bill. This typically happens in the first few months after installation, when your system is registered with the grid but your REP has not yet updated your account to reflect solar buyback eligibility.

Signs that your credits are missing include a bill that shows no export activity despite your inverter dashboard confirming energy was sent to the grid. Your inverter tracks production independently, so comparing its data against your bill is the fastest way to catch this issue.

Another variation is credits applied at the wrong rate. If your plan specifies a 1:1 buyback but your credits appear at a lower rate, your account may be coded to an incorrect plan in the REP's billing system. This is more common than you might think, especially after plan renewals or migrations between billing platforms.

Meter Configuration Problems

Your solar system requires a bidirectional meter that can measure energy flowing in both directions — from the grid to your home and from your panels back to the grid. If your meter was not upgraded or was improperly configured during installation, your exports may not register at all.

In some cases, the meter registers exports as additional consumption, effectively doubling your bill instead of reducing it. This is rare but devastating when it happens. If your bill increased dramatically after solar installation rather than decreasing, a meter configuration error should be your first suspicion.

Contact your TDU — not your REP — to verify that your meter is bidirectional and properly programmed. The TDU owns and maintains the metering infrastructure regardless of which REP you use.

Wrong Rate Plan Applied to Your Account

Texas solar homeowners sometimes discover they were never enrolled in their REP's solar buyback plan, even though they signed up for one. This results in exported energy being credited at a default rate — often zero — rather than the negotiated buyback rate.

This error frequently occurs when customers switch REPs. The new provider may set up the account on a standard residential plan rather than the solar-specific plan the customer selected. Always verify your plan details in your first bill after switching providers.

You can also end up on the wrong plan after a contract renewal. Some REPs automatically roll solar customers onto a different plan when their contract expires, and the new plan may have significantly worse buyback terms. Review your plan details annually, especially around renewal dates. Comparing plans is essential — our guide to choosing the right electricity plan covers what to look for.

TDU Delivery Charge Overcharges

While TDU charges are regulated and generally accurate, errors do occur. The most common issue is being billed for delivered energy that exceeds what your meter actually recorded. This can happen due to estimated reads — when the TDU uses an estimated consumption figure instead of an actual meter reading.

Estimated reads are flagged on your bill, but the label is easy to miss. Look for an "E" or "estimated" notation near the usage figures. If your bill seems high during a month when your solar system was producing well, an estimated read might be the culprit.

Understanding how TDU charges work helps you verify that the delivery charges on your bill match your actual grid consumption. The charges themselves are set by the Public Utility Commission of Texas and should be consistent and predictable.

How to Dispute a Billing Error

When you spot an error, document everything before contacting your REP. Gather your inverter production data, your last several bills, and screenshots of your plan terms. Having concrete numbers makes disputes resolve faster.

Step 1: Call your REP's customer service and explain the specific error. Reference the exact line items and amounts in question. Ask for a case number and the expected resolution timeline.

Step 2: If the REP does not resolve the issue within their stated timeline, file a complaint with the Public Utility Commission of Texas (PUCT). The PUCT oversees retail electric providers and has the authority to compel corrections and refunds.

Step 3: For meter-related issues, contact your TDU directly. Oncor, CenterPoint, and AEP each have processes for meter testing and recalibration. If a meter test confirms a malfunction, the TDU is required to adjust your bills retroactively.

Keep copies of all correspondence and note the names of representatives you speak with. Billing disputes in Texas typically resolve within 30 to 60 days when properly documented.

Preventing Future Billing Problems

The best defense against billing errors is regular monitoring. Compare your inverter's production data against your bill every month for the first year after installation. After that, a quarterly check is usually sufficient unless something looks off.

Set calendar reminders for your plan renewal dates so you can verify your buyback terms have not changed. When switching REPs, confirm your solar plan enrollment within the first billing cycle rather than waiting to discover an issue months later.

If your bills seem higher than expected even without obvious errors, the issue may not be a mistake at all — it might simply be a suboptimal plan. Calculating your actual solar savings against what a better plan could offer is worth doing at least once a year. Texas gives you the freedom to switch, and sometimes the biggest savings come from a better plan rather than a billing correction.