If air temp in the sun is 98F
And air temp in the shade is 87F
How much more efficient(less kwh used) will the hvac operate with lower temp air going into the condenser?

https://www.airbestpractices.com/sys...or-performance. Depends on The compressor. The house temp is the governing factor. If the house is in full sun, having the condenser in the shade means little.