Moving fluid energy conversion device (90) converts mechanical energy contained in moving fluid (16) to electrical energy. Moving fluid energy conversion device (90) comprises one or more transducers (10), a charge exchange means (600), a charge element (62) and a recovery element (65). Transducer (10) is comprised of one or polymer spacers (502) sandwiched between one or more top electrodes (504) and bottom electrode (506) pairs. Moving fluid energy conversion device (90) produces electrical energy by transferring electric charge from charge element (62), through charge exchange means (600) to transducer (10) in stretched state (6). Transducer (10) is then allowed to return to relaxed state (8). The charge in transducer (10) increases in energy when the transducer (10) returns to relaxed state (8). The increased energy electric charge flows to recovery element (65) through charge exchange means (600).