The nature of Bitcoin's power use does directly matter to the pricing. The availability of "cheap" power is directly related to the price floor due to mining costs. If you can't afford to mine coins at a profit the network will shut down. That means either higher transaction fees, more efficient mining hardware, or a change to the network design (proof of work). Power consumption is very central to the future of Bitcoins and how you should consider pricing it.

Edit: fixing some sentence wording :)

No, certainly not: the ramp-up in price directly corresponds to trade and the load on the mining network. Hence, we've seen quite a significant increase in energy consumption, recently. The problem isn't going away, as long as BTC is traded in volume (for which valuation is an indicator).