Bill-credit and "free nights/weekends" plans can look like the cheapest deals on the board — but the headline rate often exists only at one exact usage level or one block of hours, and everywhere else you pay much more. The trick isn't fraud; it's structure. These plans bury the real cost in a usage threshold or a higher paid-hour rate, so the advertised number is true only if you use electricity exactly the way the plan needs you to. Here's how each one works, the honest math on where it bites, and how to read the real rate before you sign.
This matters most in Texas, where the Power to Choose marketplace is full of these designs, but the mechanics apply anywhere you can shop for a supplier. As always: these plans aren't scams, and they genuinely win for a narrow type of household. The problem is they're sold to everyone.
Bill-credit plans: a great rate at one usage level, a bad one everywhere else
A bill-credit plan charges a normal (often slightly high) per-kWh energy rate, then hands back a flat dollar credit only if your usage lands in a specific window — most commonly at or above 1,000 kWh in a billing cycle. Because the credit is a fixed dollar amount spread across however many kWh you used, it warps your effective rate (what you actually pay per kWh, all-in) into a sharp spike of value at the threshold.
Here's the mechanism with round, illustrative numbers (this is a teaching example of how the structure behaves — not a quote of any specific live plan):
Illustrative bill-credit plan: 14¢/kWh energy charge, plus a $75 bill credit in any month you use 1,000 kWh or more.
Watch what that does to your effective rate as usage changes:
- 500 kWh: 500 × 14¢ = $70, no credit (below the threshold) → 14¢/kWh effective.
- 999 kWh: about $139.86, still no credit → 14¢/kWh effective.
- 1,000 kWh: $140 − $75 credit = $65 → 6.5¢/kWh effective. This is the number the plan advertises.
- 2,000 kWh: $280 − $75 credit = $205 → 10.3¢/kWh effective.
Two honest things fall out of that table. First, the advertised "6.5¢" is real — but it's a single point, not the price you'll usually pay. Second, there's a cliff: going from 999 kWh to 1,000 kWh drops your bill from ~$140 to $65. Using one more kWh saves you about $75. Below the threshold you get nothing and pay the full premium rate.
This isn't a contrived shape. Real plans in the live Texas market are built exactly this way — we see designs that work out to roughly 20¢/kWh at 500 kWh but about 7¢/kWh at 1,000 kWh (an illustrative snapshot of the mechanism from market data, not a current price quote). The advertised rate is always quoted at the usage level where the credit makes it look best.
Why the "average usage" assumption is doing the heavy lifting
Texas plans advertise their rate at 500, 1,000, and 2,000 kWh, and the marketplace headline is usually the 1,000 kWh figure — because for bill-credit plans, that's engineered to be the flattering one. If your home actually uses 600 kWh in mild months and 1,800 in summer, you're paying the premium rate in spring and fall and a mediocre rate in summer, and almost never the advertised number.
That's the core honesty problem: the rate you're shown is a single-point quote on a curve that's designed to dip exactly there. The only way to know your real cost is to look at the effective rate at your usage, which we'll get to below.
"Free nights" and "free weekends": the free hours are paid for in the other hours
Free-nights and free-weekends plans use a different lever to the same end. The "free" electricity is real — you genuinely pay nothing for kWh used in the free window — but it's subsidized by a higher rate during the paid hours. A plan that gives you free 8 p.m.–6 a.m. has to charge more for your 6 a.m.–8 p.m. usage to make the economics work, and the daytime rate is often well above a plain fixed plan.
So the plan only comes out ahead if you can shift a large share of your usage into the free window — running the dishwasher, laundry, EV charging, and pre-cooling the house at night, while keeping daytime use low. Most households use the bulk of their power in the paid daytime/evening hours, which is exactly where these plans are most expensive.
The deeper catch is that the paid-hour rate frequently isn't shown in the marketplace summary — only a blended average that hides it. The real number lives on the plan's Electricity Facts Label (EFL). We cover the full who-wins/who-loses breakdown in the guide on free nights and weekends electricity plans — this section is just the mechanism: free hours are paid for in the other hours.
Who these plans actually fit — and who they trap
Concede the kernel of truth: these structures are not scams, and for the right household they're a legitimately good deal.
- Bill-credit plans fit disciplined, consistently high-usage homes that reliably clear the threshold every month — a large all-electric house that's always above 1,000 kWh can ride the credit to a genuinely low effective rate.
- Free-nights/weekends plans fit households that can move a big chunk of load into the free window — night-shift workers, EV owners who charge overnight, or anyone able to run their heaviest appliances at off-hours.
They're a trap for everyone else: anyone with low or swingy usage, anyone who can't reliably hit the threshold, anyone whose life happens during the paid hours. For those homes, a plain, honest fixed-rate plan with a clear single rate almost always costs less and is far easier to predict. The gimmick adds risk, not savings.
How to protect yourself: check the effective rate at your usage
The defense is simple and it's the same for both designs — ignore the headline rate and find the effective rate at the amount of electricity you actually use.
- Read the EFL. Every Texas plan has an Electricity Facts Label that shows the average price at 500, 1,000, and 2,000 kWh, plus the bill-credit terms or the paid-hour rate. If the 500 and 2,000 numbers are far apart, you're looking at a usage-sensitive plan — that's the tell. Our guide on how to read a Plan Information Document / EFL walks through it.
- Compare on effective rate, not advertised rate. A flat-looking headline can hide a wildly different real cost. The guide on effective rate vs. advertised rate explains why the all-in number is the only one worth comparing.
- Know your own usage first. Pull your last 12 months of kWh off your bills, then check the plan's price at your typical usage — not the marketed 1,000 kWh. Our electricity cost calculator lets you run your real usage against a rate so you can see the actual monthly cost. If the unit "kWh" is fuzzy, what is a kWh makes the math click.
- Watch the early termination fee. Many of these plans carry ETFs of $150–$300, so if the structure doesn't fit your usage, getting out mid-term costs real money. Factor that into the decision before you enroll, not after.
The bottom line: a bill-credit or "free" plan advertises the best version of itself — the rate at the one usage level or the one block of hours where it shines. That number is real, but it's not your number unless your home matches the plan's assumptions. Find the effective rate at your actual usage, and the headline stops being able to fool you.
FAQ
How do bill-credit electricity plans work?
A bill-credit plan charges a normal per-kWh energy rate and then applies a flat dollar credit only when your monthly usage hits a set threshold — usually 1,000 kWh or more. Because the credit is a fixed amount spread across your usage, your effective (all-in) rate is lowest right at the threshold and much higher below it. In an illustrative example — 14¢/kWh plus a $75 credit at 1,000+ kWh — you'd pay about 14¢/kWh at 500 kWh but only 6.5¢/kWh at exactly 1,000 kWh. The advertised rate is the threshold number, not what most homes actually pay.
Are free nights and weekends plans a good deal?
Only if you can shift a large share of your electricity use into the free window. The free hours are real, but they're paid for by a higher rate during the daytime/evening paid hours, and that paid-hour rate is often hidden behind a blended average in the marketplace listing. Night-shift households and overnight EV chargers can win; most homes, which use the bulk of their power during the paid hours, end up paying a premium. Always check the paid-hour rate on the plan's EFL before enrolling — our free-nights guide covers the full breakdown.
Why is my bill-credit plan so expensive some months?
Almost certainly because your usage fell below the credit threshold. Bill-credit plans only hand back the credit when you use enough — typically 1,000 kWh in a billing cycle — so in a mild month where you use 600 or 700 kWh, you get no credit and pay the plan's full (often above-average) energy rate. The plan looks cheap at the advertised usage level and expensive everywhere below it. If your usage swings month to month, a flat fixed-rate plan with one predictable rate usually costs less overall.