Answer
No. Volts are not a unit of energy.
Work Step by Step
Electric potential is defined to be potential energy per unit charge, and is measured in joules/coulomb, or volts. Several thousand volts is not an energy.
It is true that electric potential energy is charge multiplied by electric potential. However, even if you have a large potential, there won't be much energy if you don't have much charge.
It might help to consider a tall height "h" of several thousand meters as a sort of "potential gravitational energy". A mass m has a gravitational potential energy of (mg)(h) there. But the presence of a several-thousand-meter height h doesn't mean there are necessarily thousands of joules of gravitational potential energy present. After all, m might be just a grain of dust. The units of meters aren't even the same as joules.
This is discussed on page 422, and shown in Figure 22.25.
