Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_29538735_1 (universities VARCHAR, _percentage_electricity_reduction VARCHAR)
### Question:
When 10% is the percentage of electricity reduction how many sets of universities are there?
### Answer:
SELECT COUNT(universities) FROM table_29538735_1 WHERE _percentage_electricity_reduction = "10%"