If someone wants to pay that much for energy and it's priced at a level that makes it sustainable, who are we to say it's not worth it?
The main argument I've seen against higher prices for things energy and water is that it would place an undue burden on low-income people, but that's one of the many problems that could be eliminated in its entirety by a universal basic income program. Even if it's just a bare-bones program that only covers the cost of an average person's water and energy needs, such a system would give everyone an incentive to conserve when possible, and it would do it without burdening people who can't afford it.