A solar buyback plan is a retail electricity plan that compensates you for the excess power your solar panels generate and send back to the grid. In Texas, where there is no statewide net metering mandate, what you get for that power depends entirely on which plan you choose and which retail electricity provider you sign up with.
The variation across plans is wide. Some plans pay close to the retail rate for exported energy. Others pay near wholesale prices, which can be a fraction of retail. Some credits expire monthly; others carry forward. Understanding the terms before you sign up matters more with solar than with any other plan type, because your compensation structure directly affects whether your solar investment performs the way you modeled it.
How Solar Export Compensation Works in Texas
When your solar panels generate more power than your home is using at any given moment, the excess flows back to the grid through your meter. In states with net metering mandates, your utility credits you at the full retail rate for that exported energy, effectively running your meter in reverse. Texas does not require this.
In the ERCOT deregulated market, retail electricity providers set their own export compensation terms. They are required to credit you for exported power, but the rate, structure, and terms of that credit are up to the provider.
This means your choice of electricity plan matters as much as your solar equipment. A poorly chosen plan can cut your effective return on solar by 30-50%. A plan with no rollover credit can leave significant exported energy uncompensated if your spring generation exceeds your monthly demand.
What to Look For in a Buyback Plan
The buyback rate. This is the per-kWh credit you receive for exported energy. Rates range from near wholesale (sometimes 3-6 cents/kWh) to near retail (sometimes 10-13 cents/kWh). The higher the buyback rate relative to your import rate, the more your solar system earns for you on a net basis.
Fixed vs. variable buyback rate. A fixed buyback rate is locked for the contract term. A variable buyback rate moves with market conditions. In years when wholesale prices are high, a variable rate might beat a fixed rate. In years when prices are soft, a fixed rate protects you.
Credit rollover. If your system generates more than you consume in a month, what happens to the surplus credit? Some plans pay out unused credits at the end of the month (sometimes at a lower rate than the in-month credit). Others roll credits forward month to month. Others expire them. This matters most in spring, when solar production is often highest and cooling demand is still low.
The import rate. The buyback rate only tells half the story. You also need to know what you pay per kWh when you pull from the grid, typically in the evenings and overnight. A plan with a high buyback rate and a high import rate may not net out better than one with a lower buyback rate and a lower import rate, depending on your usage pattern.
Time-of-use interaction. Some buyback plans have time-of-use components, meaning your export credit may vary by time of day. Your panels produce the most midday, which might be off-peak (lower credit) on some plans. Know your production curve and match it against the plan’s time periods.
Common Structures to Watch For
Bill credits with expiration. A buyback plan that credits your account each month but doesn’t roll over unused credits is common. If you overproduce in May, you use that credit in June. If you still have credit left at the end of June, it might evaporate. In Texas, where summer air conditioning consumes most of your annual generation surplus, this might not matter much. But spring and fall can leave you with uncaptured value if credits don’t carry.
Tiered import rates with buyback attached. Some plans bundle a buyback credit into a TOU or tiered import structure. The import rate varies by usage level or time of day, and the buyback sits alongside that. These plans require more careful modeling against your actual usage pattern before you commit.
Minimum bill provisions. Some plans include a minimum monthly bill regardless of how much you export. If your system covers more than 100% of your usage in a strong production month, you still pay a floor. This is usually disclosed in the EFL but not prominently.
How to Evaluate a Plan Against Your System
Before signing up for any solar buyback plan, model the numbers against your actual production data.
If you’ve had your panels for at least a year, you have monthly production data from your inverter. You also know your monthly consumption from your current electricity bill. Calculate the expected monthly surplus for each month of the year (production minus consumption), then apply the plan’s buyback rate to that surplus and its import rate to your expected grid draw.
The number you’re looking for is annual net energy cost, not the buyback rate in isolation. A plan with a 3.5 cent buyback rate and a 9 cent import rate might beat a plan with a 5 cent buyback rate and a 13 cent import rate, depending on your profile.
If you’re still in the planning stage for solar, your installer should provide a production estimate by month. Use that against your historical usage data to model the same calculation.
Emporia’s Solar Rewards Plan
Emporia’s Solar Rewards Plan is available to Texas homeowners in deregulated service areas who have grid-tied solar panels installed. It offers a 3.5 cent per kWh export credit with no expiration, and credits carry forward month to month with no rollover cap.
The 3.5 cent credit reflects the wholesale value of exported energy and is a fixed rate for the contract term. Your spring surplus carries full credit value into summer, when your grid draw is highest. Emporia electricity plans are offered in Texas in partnership with Light, a licensed retail electricity provider.
The Solar + EV Charging Savings Plan is a separate combined plan for homes with both connected solar and an Emporia EV charger. How solar EV charging works is worth reading if you’re considering that combination, and the rate plan comparison for EV owners covers how the EV-specific structure compares to standard TOU and flat-rate options. Available in Texas deregulated areas.
You can check current plan details and address eligibility online.
The Right Buyback Plan vs. the Right Buyback Rate
The highest buyback rate is not always the best plan. What matters is the net annual energy cost after accounting for your import rate, credit rollover terms, monthly fees, and the overall structure of the plan.
Solar homeowners who take the time to model this against their actual production and usage data typically do better than those who shop on buyback rate alone. The EFL for any plan you’re seriously considering will have everything you need to run the comparison.
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