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> There is if we add on a tax for the negative externalities, we need to consider both positive and negative externalities to get the tax right. There are few positive externalities directly associated with the act of burning oil, except some associated with global heating. There may be positive and negative externalities from the things people choose to do with the power generated. Companies are generally better at internalising positive effects than negative ones, for obvious reasons. If my chemical plant produces hot water as a waste product, I can sell that to the plant next door or to a district heating system. Competent business try not to leave value on the table, and try not to pay costs that they don't have to. But where they can be identified, sure, subsidise away. Just not crypto mining. > So there must be a large positive externality here somewhere Not necessarily. There is/was a large positive asset: ie. a huge store of chemical energy underground. It has allowed us to do incredible things. If the cost of it included the negative impacts of burning it, the market would use less of it, smarter, more efficiently, towards the most valuable outcomes, and in better balance with the harms. >who do you think is bearing the cost of these negative externalities right now? ...would they not be better off if we got them access to fossil fuel I'm not a climate scientist and I'm not qualified to re-litigate the scientific consensus, which is that global heating is dangerous. Some will be more affected than others by increased incidence of extreme weather, water wars, mass migration, cost of flood defences etc. But ultimately it is a "tragedy of the commons": few of us are innocent, most of us are impacted or at risk in some way. It isn't even in the interests of those of us with economic power to stop polluting, because the cost of each of our individual actions is externalised. If I take a flight, I get the full benefit, but experience only one eight billionth of the total harm. That's why it needs a systemic fix. |