CREATE TABLE table_31191 ("Year" TEXT, "Universities" FLOAT, "No. of Students Signed up" FLOAT, "% electricity reduction" TEXT, "Tonnes of CO2 Saved" FLOAT, "\\u00a3 Saved" TEXT)

When 10% is the percentage of electricity reduction how many sets of universities are there?
SELECT COUNT("Universities") FROM table_31191 WHERE "% electricity reduction" = '10%'
SELECT COUNT("Universities") FROM "table_31191" WHERE "% electricity reduction" = '10%'