Any type of energy is also a frequency of waves and can be measured in hertz, volts, amps, or watts, depending on its specifics.
For example, the sunlight is an energy structure measured in frequency and is composed of;
Red - 430 terahertz
Orange - 500 terahertz
Yellow - 516 terahertz
Green - 545 terahertz
Blue - 600 terahertz
Violet - 750 terahertz
1THz = 10 to the power of 12 Hz
Therefore, the Sunlight as a whole energy structure is an average of its components, depending on obstructions.
The energy structure of the sunlight is woven into everything. Everything around us, and us included, is made of different energy structures. Our organs, including our brain, and even our thoughts, are a composition of energy which use the power of the sun.