As has been pointed out, in Europe there's huge-scale deployment of this type of initiative. Their grids are stable; they have a system that works. There's nothing there currently that we couldn't be doing here for quite a number of years before we had to answer the question, “What do we need to do about the grid?” There could be 20 years of deployment of net-zero energy homes before we're even concerned about whether this is causing stability problems on the grid itself.
Even then, our grids are going to need to be upgraded anyway. The grid of the 20th century is not the grid of the 21st century. The grid of the 21st century is going to be a smart grid; it's going to be computer-controlled. It'll have much better wires and lines for moving the power as well, and it will be a system you'll be able to stabilize, because you'll be able to shift loads around in micro-seconds, rather than having people sitting in front of boards saying, “I think I need to move some load from this one to this one, because it's looking a little unstable.” It will be done by computer.
We need to invest in our grid system for the 21st century to allow these kinds of interconnections and allow this kind of large-scale deployment for these kinds of systems.
I worry that we keep talking about individual technologies. We need to start talking more along systems lines than of individual winners or losers amongst the technologies. Even within the home itself, what's come out of the net-zero energy homes, which has been very interesting for me in following the design charrettes and development of these houses, is that when you start thinking about the home as a system, you come up with a very different answer at the end.
What's happened out of this, what was premier out of all these developments, was the envelope of the house. It was the walls, the windows, the doors. It wasn't the solar system on top of the house. That was the icing on top of the cake that got you to net-zero. It was how you designed that house to start with that got you the big win.
I think it's the same thing when we talk about it on the larger scale and start talking about grid systems. It's how we design the grid for the future that's going to determine whether we're winners or losers in this, nationally or internationally. We as a country have the ability to be winners across the field. We just need to find out what the levers are and apply enough ingenuity to get there.
I'm sorry. That's just my rant.