Based on the numbers you gave, it seems you’re only looking at Eversource CT’s supply rate with the 12.07. You need to factor in the delivery rates as well. Especially since you seemed to use other states supply + delivery charges in your numbers…

I recommend looking at the reports the EIA puts out. Their report is more comprehensive and should include the many different utilities across the states in it. I linked it below. As you can see, CT is near the higher end for electric rates in the Northeast as of August 2022.

https://www.eia.gov/electricity/monthly/epm_table_grapher.php?t=epmt_5_6_a