I live off-grid in California, and pretty much every time I've evaluated options for something that would save energy, I've been better off by forgoing the subsidized
option. It can be difficult to motivate behavior as intended through subsidizing, especially in a quickly changing field. If I were naïve and assumed that the subsidized products would always save me energy usage, I would be spending more money and saving less energy.
When a state is against subsidizing, but not against what is being subsidized, it can be more beneficial than an inefficient subsidy.