The rules of the competition state: "The winner will be the individual, team or organisation that achieves the greatest volume of electrical output over the set minimum hurdle of 100 GWh over a continuous two year period, using only the power of the sea".
Scotland's overall manufacturing output in October fell for the fourth month in a row, the longest continuous period of decline since the 2008-09 recession.
Known best as the guiding metric of the Himalayan nation of Bhutan, GNH tracks not merely economic output and consumption, but factors like access to health care, education and nature, and evolves based on continuous input from citizens.