A Canadian engineer has proposed to use tornadoes to power wind turbines that in turn will create electricity. The concept is similar to a solar tower, which uses solar heat to produce wind power. Efficiency of a solar tower relies on how big it is, the bigger the better. The tornado-based power plant does not need to be extremely tall, thus saving costs.
The tornado itself is self-sustaining once it is put into motion since it relies on heat transfer. Located at the bottom of the tornado generator turbines would be located to harness the power of nature. So far a mockup has been made, but a full scale test has yet to happen.