No.
1) Compare resources needed for 1 Geothermal Generator (20 EU/t) and 1 Advanced Solar Panel (8 EU/t). While geothermals produce more, they are million times easier to make than ASPs, ESPECIALLY with GT.
2) Solar Panels produce 8 EU/t when it's day and 1 EU/t when it's raining/night. Geothermals produce 20 EU/t as long as you feed them with lava, which, honestly, is incredibly easy with the lava from nether.
Now we come to the conclusion that spamming geothermals is MUCH more profit and easy than spamming ASPs.
Solar panels are fire and forget, if compared to geothermals.
When the scale of things gets big is where the problem comes.
For example, if you have 10 Ultimate hybrids solar panels (5120 EU/t), to achieve the same with geothermals you need 256 geothermals, consuming 1 lava bucket every 2 ticks.
The nether is lava-plentiful, but it is not infinite , neither is your time to move the pump that often.
Guess why i still prefer my lovely windmills?