I couldn't help but notice in the news that the Bay Area Air Quality Management District passed a Carbon Tax on Wednesday.
www.triplepundit.com/pages/bay-area-passes-carbon-tax-fir-003161.php

This sounds great in theory- 4.4 cents per ton of carbon emitted isn't big enough for most businesses to carry serious issue, but the major polluters will have to start figuring this tax into their budgets. Simply becoming a consideration in business is a big start, in my opinion.

I would like to know how this tax is going to be measured. Apparently, Boulder, CO was the first city in the US to apply a carbon tax- www.bouldercarbontax.org. Their tax is based on the amount of electricity consumed by a business. What happens though if a business buys its energy from a wind provider? How is this taken into consideration? Who tracks "carbon output", and how?

I'll try to be patient about seeing answers to these questions on the BAAQMD website since it was only Wednesday that this was passed. Does anyone have insight in the meantime?