CREATE TABLE table_237 ("Power Source" TEXT, "Number of Generators" FLOAT, "Power Capacity  ( GW ) " TEXT, "% of total Capacity" TEXT, "Capacity factor" TEXT, "Annual Energy  ( billion kWh ) " TEXT, "% of annual production" TEXT)

What is the percentage of total capacity when the energy is 120.2?
SELECT "% of total Capacity" FROM table_237 WHERE "Annual Energy (billion kWh)" = '120.2'
SELECT "% of total Capacity" FROM "table_237" WHERE "Annual Energy (billion kWh)" = '120.2'