CREATE TABLE table_18911 ("Cost" TEXT, "2400 kWh/kWp\\u2022y" TEXT, "2200 kWh/kWp\\u2022y" TEXT, "2000 kWh/kWp\\u2022y" TEXT, "1800 kWh/kWp\\u2022y" TEXT, "1600 kWh/kWp\\u2022y" TEXT, "1400 kWh/kWp\\u2022y" TEXT, "1200 kWh/kWp\\u2022y" TEXT, "1000 kWh/kWp\\u2022y" TEXT, "800 kWh/kWp\\u2022y" TEXT)

At the rate where 2200 kwh/kwp y is 11.8, what is the value of 2400 kwh/kwp y?
SELECT "2400 kWh/kWp\u2022y" FROM table_18911 WHERE "2200 kWh/kWp\u2022y" = '11.8'
SELECT "2400 kWh/kWp\u2022y" FROM "table_18911" WHERE "2200 kWh/kWp\u2022y" = '11.8'