Powering the Arcology great works

Question

I just finished my first ever Arcology great works. But it seems to need power, which makes perfectly good sence.

How does the Arcology get its power demand met?

Answer 1

You need surplus power in a city in the same cluster as the Arcology. The power is transferred automatically.

You may need more than the exact amount of surplus power. Power transfer is not 100% efficient.