There are several different types in the United States. For instance, there are policies that have been implemented at the state level called renewable electricity standards. They will provide credits for renewable electricity generation. We've not seen that type of policy enacted at the federal level. I think that would create a much more significant policy driver and more of a demand for the type of energy they're seeking.
In addition, there are tax credits that are available, production tax credits. Unfortunately, in the United States they've only been available for one or two years—short-term extensions of this credit.
Waste energy facilities are facilities that have long lead times similar to biomass or geothermal facilities.
The only facilities that have really benefited greatly from the short-term tax credits have been the wind industry, given that they have the shortest lead time.
This goes back to the previous question about certainty. If we had more certainty that the tax credits would be available when we completed the facility, then those would be legitimate drivers of investment.