CREATE TABLE table_23950 ("City  ( Utility ) " TEXT, "Residential Monthly usage: 1000 kWh" TEXT, "Small power Power demand: 40 kW; Consumption 10 , 000 kWh ,  load factor: 35%." TEXT, "Medium power Power demand: 1 , 000 kW; Consumption: 400 , 000 kWh ,  load factor: 56 %." TEXT, "Large power Power demand: 50 , 000 kW; Consumption: 30 , 600 , 000 kWh ,  load factor: 85%." TEXT)

What is every city with a residential monthly usage of 11.80?
SELECT "City (Utility)" FROM table_23950 WHERE "Residential Monthly usage: 1000 kWh" = '11.80'
SELECT "City (Utility)" FROM "table_23950" WHERE "Residential Monthly usage: 1000 kWh" = '11.80'