In principle, yes. The best example is the Solar cell, which essentially uses the visible radiation to generate electricity. But what if the solar cell is kept inside the room instead of placing it on the roof at specific angle. Would it be useful?

Obviously not, because it won't get enough intensity of the radiation. Now consider the another case when the solar cell is placed in a proper location at a proper angle but the efficiency of the solar cell is quite low. Again, it wouldn't be able to serve the purpose.

Hence, if one wants to use a particular frequency spectrum of the electromagnetic waves to generate electrical energy, the following two conditions are required:

1. An efficient device to convert the energy

2. Sufficient amount of intensity of that wave, which you want to use to generate electricity

The wave energy of all the oceans in the world would be enough to supply us with energy. Many wave power plants have been tested, none survived the winter storms. The reason: The amplitude of the waves is about ten times higher in winter than in summer. That means a 100-fold energy difference that no machine has ever survived.

Hi;

Ocean waves contain enormous energy potential. Energy is extracted directly from the movement of ocean waves using different types of generators. Some types of these devices harness the power of breaking waves. Others make use of swells. Still others use the pressure of waves near the ocean floor. However, this technology must ensure that marine life will not be affected by the conversion process.

With my best regards

As far as EM waves are concerned, the answer is yes. An example is that a resonant antenna can be used, for example, to pick up radio waves of mobile phone transmission with sufficient energy extrated to light an LED. This is well known. However, the power extracted would In general be minute and of little use in practice.

regards