Venus is closer to the sun, so, solar panels generate more W/mm^2 there. Maximum solar irradiance at 1AU is 1351 W/m^2. Maximum solar irradiance at 0.723AU

Venus is closer to the sun, so, solar panels generate more W/mm^2 there. Maximum solar irradiance at 1AU is 1351 W/m^2. Maximum solar irradiance at 0.723AU is 2584 W/m^2.