CREATE TABLE table_27330 ("Region" CLOB, "Public network" CLOB, "Own/community generator" CLOB, "Solar panel" CLOB, "Other source" CLOB, "None" CLOB)

How many regions have 0.5% solar panels?
SELECT COUNT("Public network") FROM table_27330 WHERE "Solar panel" = '0.5%'
SELECT COUNT("Public network") FROM "table_27330" WHERE "Solar panel" = '0.5%'