A pigging tool may include a housing positionable in a pipeline. The housing may define a bypass channel that extends along an axis that is nonparallel to a longitudinal axis of the housing. An energy generation device can be positioned in the bypass channel of the housing such that fluid is receivable by the energy generation device to generate energy for the pigging tool. Further, an energy storage device may store energy generated from the energy generation device. The energy storage device may provide the pigging tool with energy to perform one or more operations in the pipeline.