It is all done by mirrors;
you put a big sunshade at Venus’ L1 point, wait ten thousand years for the planet to cool down, then light it up by orbiting mirrors which mimic the rotation of the sun.
If you are serious about terraforming this hellhole planet, it could be done; it would just take lots of time, and lots of energy.
SF worldbuilding at
http://www.orionsarm.com/main.html
Thanks, everyone. Great information. As another thank you, I’ve attached the following snipped information on Venus. Not pretty.
Q: Will humans ever be able to live on Venus?
A: No. The surface temperature is about 730 K ( 854 F), and the surface pressure is 90 times that at Earth’s sea level. You would be boiled and crushed in an instant. You could not even get from your spacecraft to a protected, pre-fabricated home base without being squashed. Walking on Venus would be as difficult as walking a half-mile beneath the ocean.
The pressure of Venus’ atmosphere at the surface is 90 atmospheres (about the same as the pressure at a depth of 1 km in Earth’s oceans).
Venus is not believed to have plate tectonic movement like Earth. It does have some volcanic activity however
There are very few impact craters on the surface of Venus, in fact data from Magellan only shows 963 craters. Venus has a really thick atmosphere that can stop really small meteoroids - those less than 1km in diameter.
New research indicates Venus may have lightning similar to Earth. The lightning may be related to volcanic activity on the surface of the planet.
However, radio signals seem to indicate it is an activity that occurs during the afternoons in a heavy layer of clouds 35 miles above the surface, not from volcanoes.
Venus is round, very different from the other planets and from the Moon. Venus has neither polar flattening nor an equatorial bulge.
The highest point on Venus is the summit of Maxwell Montes, 6.71 mi (10.8 km) above the mean level, more than a mile higher than Mount Everest. There is some evidence that this huge mountain is an active volcano. The photos also showed that the planet’s second-highest mountain, Maat Mons, rising 5 mi (8 km) above the Venusian plains, appears to be covered with fresh lava and is possibly an active volcano.
According to the latest results, Venus’s atmosphere exerts a pressure at the surface 94.5 times greater than Earth’s.
Because of a thick blanket of carbon dioxide, a “greenhouse effect” exists on Venus. Venus intercepts twice as much of the Sun’s light as does Earth. The light enters freely through the carbon dioxide gas and is changed to heat radiation in molecular collisions. But carbon dioxide prevents the heat from escaping. Consequently, the temperature of the surface of Venus is over 800°F (427°C), hot enough to melt lead.
The atmosphere of Venus is about 250 km (155 mi) thick. The atmosphere circulates in a westerly direction about every 4 days.
The wind speed in the highest cloud layer reach 355 km/hr (220 mi/hr) which is roughly equal the Earth's jet stream.
The middle cloud layer has the fastest winds. These winds can reach 724 km/hr (450 mi/hr.) That is faster than the fastest tornado on Earth!
In the lowest cloud levels, the winds blow at around 160 km/hr (100 mi./hr) Then, at the surface there is a gentle breeze of only 3.6 km/hr (2.2 mi./hr.)