The article says "a wide range of applications, from those that require as little as 100 watts, [such as] a lightweight unmanned aerial vehicle, to 100 megawatts"
I read the 100 watts as referring to lightweight unmanned aerial vehicle.
100 megawatts is followed by "[providing] electricity for 36,000 homes."
The original paper does not mention lightweight aerial vehicles as an application, but a drone is mentioned in the title (and shown in the top image) of the article.
Applications mentioned in the paper are:
hybrid cars, unmanned vehicles, deep-space probes, energy storage, enabling efficient cogeneration systems for heat and electricity.
(A less-misleading title might even be: "New thermophotovoltaic engine for deep-space probes")
