If the economics don't work, then you can wish you are saving the planet all you want, but it ain't gonna happen. Elon Musk understands this very well -- he always points out that solving the global warming problem will only work if the solution is economical.
Also, this is far from the optimal thing to do with the money, even if you want to spend it on saving the planet. High quality RECs or carbon offsets would be far more efficient ways to spend it.
