Here you may find the historical variable rates for Texas (ERCOT) by market. As these are historical rates, the data for the current month will not be displayed until following month.
| Center Point | Oncor | AEP Central | AEP North | TNMP | |
| 2021 | |||||
| January | $ 0.198 kWh | $0.195 kWh | $0.201 kWh | $0.221 kWh | $0.216 kWh |
| February | $0.196 kWh | $0.193 kWh | $0.199 kWh | $0.212 kWh | $0.212 kWh |
| March | $0.193 kWh | $0.191 kWh | $0.195 kWh | $0.208 kWh | $0.211 kWh |
| April | $0.193 kWh | $0.192 kWh | $0.193 kWh | $0.208 kWh | $0.208 kWh |
| May | $0.193 kWh | $0.204 kWh | $0.192 kWh | $0.209 kWh | $0.212 kWh |
| June | $0.192 kWh | $0.205 kWh | $0.191 kWh | $0.209 kWh | $0.216 kWh |
| July | $0.190 kWh | $0.204 kWh | $0.189 kWh | $0.204 kWh | $0.216 kWh |
| August | $0.185 kWh | $0.203 kWh | $0.187 kWh | $0.200 kWh | $0.218 kWh |
| September | $0.187 kWh | $0.214 kWh | $0.191 kWh | $0.202 kWh | $0.217 kWh |
| October | $0.186 kWh | $0.212 kWh | $0.188 kWh | $0.199 kWh | $0.217 kWh |
| November | $0.205 kWh | $0.232 kWh | $0.214 kWh | $0.211 kWh | $0.225 kWh |
| December | $0.206 kWh | $0.231 kWh | $0.223 kWh | $0.216 kWh | $0.222 kWh |
| 2022 | |||||
| January | $0.210 kWh | $0.232 kWh | $0.227 kWh | $0.218 kWh | $0.217 kWh |
| February | $0.199 kWh | $0.216 kWh | $0.231 kWh | $0.220 kWh | $0.211 kWh |
| March | $0.193 kWh | $0.204 kWh | $0.223 kWh | $0.217 kWh | $0.203 kWh |
| April | $0.193 kWh | $0.202 kWh | $0.217 kWh | $0.214 kWh | $0.203 kWh |
| May | $0.214 kWh | $0.224 kWh | $0.234 kWh | $0.235 kWh | $0.221 kWh |
| June | $0.222 kWh | $0.233 kWh | $0.243 kWh | $0.239 kWh | $0.225 kWh |
| July | $0.278 kWh | $0.281 kWh | $0.291 kWh | $0.309 kWh | $0.294 kWh |
| August | $0.296 kWh | $0.287 kWh | $0.302 kWh | $0.317 kWh | $0.298 kWh |
| September | $0.315 kWh | $0.307 kWh | $0.321 kWh | $0.329 kWh | $0.316 kWh |
| October | $0.333 kWh | $0.328 kWh | $0.335 kWh | $0.343 kWh | $0.346 kWh |
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