Unfortunately, unless the govt provides a concrete monetary incentive, businesses will not change.
If it makes economic sense then they will change on their own. If it doesn't make economic sense, then that is when you need the government to step in offer money to business to make it in their best economic interest.
The problem with giving tax incentives is that it distorts proper decision making, and in the end you will likely pay more in taxes and debt, then whatever the original energy cost savings was suppose to be. So, in the end -- you are worse off.
The government offered a "first time homebuyer credit" tax incentive the last three years to encourage buyers to buy homes. At the same time, home values are still dropping. Now we have all these new Americans "first time home buyers" who are underwater on their mortgages.
The government is good at setting up perverse incentives that go against economic sense.