Applicable Next Generation Science Standards:
4-PS3-4.
Apply scientific ideas to design, test, and refine a device that converts energy from one form to another.* [Clarification Statement: Examples of devices could include electric circuits that convert electrical energy into motion energy of a vehicle, light, or sound; and, a passive solar heater that converts light into heat. Examples of constraints could include the materials, cost, or time to design the device.] [Assessment Boundary: Devices should be limited to those that convert motion energy to electric energy or use stored energy to cause motion or produce light or sound.]
The expression “produce energy” typically refers to the conversion of stored energy into a desired form for practical use. (4-PS3-4)
More Background on this topic:
https://www.stevespanglerscience.com/sick-science/123wsks55tzofz9o7/