Each search costs 0.0003 kWh of energy in Google infrastructure. That's just energy bill. Now think about massive infrastructure that is out there giving you su

Each search costs 0.0003 kWh of energy in Google infrastructure. That's just energy bill. Now think about massive infrastructure that is out there giving you sub-second results for 40,000 queries each second all over the world. Think about the man power that does on day-in day-out to make sure things are not gamed in constant war of SEO. I highly doubt Google can function in same way without economy of scale.