Wikipedia
Dynomak is a spheromak fusion reactor concept developed by the University of Washington using U.S. Department of Energy funding.
The project started as a class project taught by UW professor Thomas Jarboe; after the end of the class, the design was continued by Jarboe and PhD student Derek Sutherland, who had been previously working on reactor design at MIT.
Unlike other fusion reactor designs (such as the ITER currently under construction in France), the Dynomak would be, according to its engineering team, comparable in costs to a conventional coal plant.
The prototype currently at UW, about a tenth the scale of a commercial project, is able to sustain plasma efficiently. Higher output would require the scaling up of the project and a higher plasma temperature.
A cost analysis was published in April 2014 and detailed results were to be presented at the International Atomic Energy Agency's Fusion Energy Conference on October 17, 2014.
Current results as of the Innovative Confinement Concepts Workshop in 2014 show performance of the HIT-SI high Beta spheromak operating at plasma densities of 5x10 m, temperatures of 60 eV, and maximum operation time of 1.5 ms. No confinement time results are given. At these temperatures no fusion reactions, sustainment, alpha heating, or neutron production is expected.