Context Clue for Technological Innovation

During the annual Science Fair, several students presented their innovative projects. One student unveiled a revolutionary device that promised to significantly reduce energy consumption in households. The judges were highly impressed, noting that the invention was not only practical but also environmentally friendly. The judges concluded that the student demonstrated exceptional skills in both research and creativity. By the end of the fair, the judges decided to award the student the top prize for the project, which they described as a(n) _______ addition to modern technology.