Davao Light pioneered rural electrification using single-phase lines to step down voltages for isolated farmers in the outlying areas of Davao City. It was also the first electric utility in the Philippines to use aluminum conductor reinforced steel (ACSR) for its transmission lines to replace copper, thus, allowing pole installation at greater intervals.Since its existence, Davao Light has been the sole electric utility operator in Davao City. Even after the organization of electric cooperatives in 1974 when several private utilities were transformed into cooperatives by national policy, Davao Light continued its operations on account of its proven track record of experience, financial stability and efficiency.