Constellation
12 Month Usage Bill Credit
Rate
12.70¢
Term
12 Months
$1000 kWh
$127
- ✓ 30% green
Best for Reliability Constellation in Markham
Constellation in Markham.
Constellation has 2 plans live on the Oncor grid serving Markham. Lowest rate 12.70¢/kWh — about 2.5¢ below the Markham average.
3.9 · Oncor grid · Matagorda County
Constellation in Markham
By the numbers.
Lowest here
12.70¢
Constellation in Markham
Markham avg
15.17¢
across all providers
Constellation plans
2
on Oncor
100% green
0
renewable plans
Top Constellation picks for Markham
Best Constellation plans here.
Constellation
12 Month GREEN (No Min Usage Fee)
Rate
14.90¢
Term
12 Months
$1000 kWh
$149
- ✓ 30% green
Markham, Matagorda County, sample ZIP 77456. Served by Oncor (outage line: 1-888-313-4747).
Switching in Markham
Same wires — new bill from Constellation.
Oncor owns the wires in Markham 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.
More on Constellation
Explore Constellation.
Compare Constellation plans in Markham
See how Constellation's 2 plans stack up at your real Markham usage.
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