Amaravati: Andhra Pradesh Energy Minister G Ravi Kumar on Tuesday said here that power usage rose by up to eight percent in the state, noting that infrastructural works are being executed to cater to future domestic, business and industrial needs. Addressing the Legislative Council, the Energy Minister said 375 electric sub-stations are available across the state. "Power usage rose between six percent and eight percent in the state. According to the minister, 68 construction works worth Rs 5,500 crore are underway apace. Identifying future needs, Kumar said, the Energy Department is taking up construction and added that plans are afoot to provide uninterrupted power to industries.