CREATE TABLE table_20242 ("20 years" TEXT, "2400 kWh/kW p y" TEXT, "2200 kWh/kW p y" TEXT, "2000 kWh/kW p y" TEXT, "1800 kWh/kW p y" TEXT, "1600 kWh/kW p y" TEXT, "1400 kWh/kW p y" TEXT, "1200 kWh/kW p y" TEXT, "1000 kWh/kW p y" TEXT, "800 kWh/kW p y" TEXT)

Name the 1800 kwh/kw p y when 2400 kwh/kw p y is 5.8
SELECT "1800 kWh/kW p y" FROM table_20242 WHERE "2400 kWh/kW p y" = '5.8'
SELECT "1800 kWh/kW p y" FROM "table_20242" WHERE "2400 kWh/kW p y" = '5.8'