Planck energy: ~10^19 GeV is approx 2 GJ per collision

Energy to vaporize Earth's oceans: ~4 x 10^27 J

For a Planck-scale linear collider at LHC-like collision rates (~10^8/sec):

Beam power requirement: ~2 x 10^17 W

With realistic wall-plug efficiency of ~1%: ~2 x 10^19 W

Annual energy consumption: ~6 x 10^26 J

At 1% efficiency, one year of operation would:

Vaporize about 15% of Earth's oceans

Or vaporize the Mediterranean Sea roughly 50 times

Or boil Lake Superior every 5 hours

Or one complete ocean vaporization every 6-7 years of operation

It's about 1 million times current global power consumption

Or about 50,000 Suns running continuously

Or 170 billion Large Hadron Colliders operating simultaneously