Thank you, witnesses, for being here today.
Mr. Mueller, I would like to start with your suggestions regarding buildings and taking them to a level of zero emissions. I just need a little bit of clarification. Can you tell me what you're thinking of in terms of energy benchmarks? Would these depend on the region of the country, so that each region would have energy benchmarks, obviously depending on the climate in each part of the country? Can you give me a little more detail on how you perceive the outcome of that?