Constellation
12 Month (No Min Usage Fee)
Rate
15.20¢
Term
12 Months
$1000 kWh
$152
Rates as of July 2026 · verify on the EFL
- ✓ 30% green
Best for Reliability Constellation in Princeton
Constellation in Princeton.
Constellation has 2 plans live on the TNMP grid serving Princeton. Lowest rate 15.20¢/kWh.
3.9 · TNMP grid · Collin County
Constellation in Princeton
By the numbers.
Lowest here
15.20¢
Constellation in Princeton
Princeton avg
14.70¢
across all providers
Constellation plans
2
on TNMP
100% green
0
renewable plans
What you actually pay in Princeton
Energy charge vs the wires.
Constellation's cheapest plan in Princeton is 15.2¢/kWh all-in. That number is two parts: Constellation's energy charge, plus the TNMP delivery charge — the cost of the poles and wires, set by the PUCT and identical on every plan from every provider on this grid.
Constellation energy
9.9¢
TNMP delivery
5.3¢
All-in
15.2¢
At a typical 1,000 kWh month, that's about $152 — including the ~$7.85 TNMP meter charge. Because delivery is fixed, the only lever between providers in Princeton is the energy charge. Constellation's best rate ranks #13 of 18 providers on the TNMP grid.
Top Constellation picks for Princeton
Best Constellation plans here.
Constellation
12 Month GREEN (No Min Usage Fee)
Rate
16.10¢
Term
12 Months
$1000 kWh
$161
Rates as of July 2026 · verify on the EFL
- ✓ 30% green
Princeton, Collin County, sample ZIP 75407. Served by TNMP (outage line: 1-888-866-7456).
Switching in Princeton
Same wires — new bill from Constellation.
TNMP owns the wires in Princeton and processes the switch in 1-3 business days — no service interruption, no truck roll, no new equipment. Constellation files the switch on your behalf. Same-day if you order before 4-5 PM Central.
Constellation in Princeton — FAQ
Common questions.
Does Constellation serve Princeton, TX?
Yes. Constellation offers 2 plans in Princeton on the TNMP grid, starting at 15.2¢/kWh all-in. Enrollment is online and service is delivered by TNMP.
What's the delivery charge in Princeton?
TNMP charges about 5.3¢/kWh plus ~$7.85/month to deliver power in Princeton. This is set by the PUCT and is identical on every plan — from Constellation or any other provider — so the only number that actually differs between providers is the energy charge.
Where does Constellation rank on price in Princeton?
Constellation's lowest Princeton rate ranks #13 of 18 providers serving the TNMP grid. The cheapest plan overall in Princeton is 8.3¢/kWh; Constellation's best is 15.2¢/kWh.
How long does it take to switch to Constellation in Princeton?
1 to 3 business days. TNMP keeps delivering power the whole time — no interruption, no new meter, no truck roll. Order before roughly 4–5 PM Central on a weekday and same-day switching is usually available.
More on Constellation
Explore Constellation.
Compare Constellation plans in Princeton
See how Constellation's 2 plans stack up at your real Princeton usage.
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How enrollment works
You pick the plan here. Enrollment finishes on our secure checkout — same rate, no markup. If you'd rather skip the ZIP entry, Live Link pulls your real usage from Smart Meter Texas in about 30 seconds. Same plans, same checkout, less typing.