[Retric]

Depends on what you mean by massive. US’s net renewable subsides over fossil fuels work out to something like 0.1% of the budget in that time period.

On one had that’s serious money on the other hand it’s not enough for tax payers to notice the expense.

[MichaelZuo]

There are also opportunity costs and non-monetary costs.

For example the EU subsidized and encouraged diesel engined cars greatly, to reduce CO2 emissions, but the increase in diesel pollutants, other than CO2, over and beyond that of gasoline engined cars, likely decreased average health in urban areas.

Now with Euro 6 they are correcting the problem but the damage has already been done to at least one generation.