How much sunlight does Pluto receive compared with Earth?

Pluto is located at a mean distance of approximately 5.9 billion kilometers (39.5 astronomical units) from the Sun. Due to this extreme distance, the sunlight that reaches the dwarf planet is significantly less intense than what reaches Earth.12

On average, Pluto receives only 1/1,600 of the amount of sunlight that reaches Earth. Because of this, an observer standing on the surface of Pluto would see the Sun merely as an extremely bright star in a dark sky. This lack of solar energy contributes to the planet's frigid environment, where the mean surface temperature is approximately 40 K (−387 °F, −233 °C), causing substances like nitrogen and carbon monoxide to exist as ices.32