Absolutely.
With all of the projects that we've completed, sustainability has been a critical objective. From the baseline of 2005, we've reduced GHG emissions by 56% to 2018. That's a little ahead of our target. I think the target for that timeline was 40% by a decade ahead of that target and further.
With each project we have implemented a number of initiatives from a sustainability perspective. Right now we're undergoing research with the NRC and Concordia University, specifically on the thermal performance of heritage buildings and how to improve their performance from an energy conservation perspective. Of course, with everything there will be water conservation. For the first time really, the Centre Block will be hooked up to modern heating and cooling, with modern facilities driving all of that, which will drive down the energy consumption significantly. There will be LED lighting, and on and on.
Within, for example, the Sir John A. Macdonald Building and the chamber here, we use the recycling of air. In the summer we're able to vent the hot air. In the winter we're able to recycle large volumes from the upper portions back down to ground level.
It is a priority, and I'll ask Ms. Garrett to give a couple of more details on the Centre Block in particular.