Electro Sur Este S.A.A. Announced earnings results for the first quarter ended March 31, 2021. For the first quarter, the company announced sales was PEN 116.072 million compared to PEN 103.240 million a year ago. Operating income was PEN 19.412 million compared to PEN 16.231 million a year ago. Net income was PEN 13.572 million compared to PEN 11.409 million a year ago.