Nope. They are between 23.5° latitudes, so they are illuminated from every side depending on the year season.
And as they are in the Northern hemisphere, they are mostly illuminated from South.
And look, they are placed enough far and not on the E-W or N-S direction from each other, so don't obsure the photovoltaic panels covering their surface (until the intrigued locals had scratched the cover off).
According to wiki, the "Khufu" surface area is 85 500 m2, so ideally it's ~85 500 * 1370 / 2 * 0.1 ~= 6 MW of solar energy (if a half is in shadow, and the panels are 10% efficient),
Enough much power to power any equipment inside.