Yes, it's important, not just because it's a large part of our portfolio—infrastructure is about a $33-billion investment—but also because it's a super-long-term investment, so we have to consider the types of changes that can happen over the longest period of time. It's something that we look at and examine.
I'll say that there are a whole raft of issues that we look at. It could be physical changes that will happen to the assets that we're investing in or it could be technological change. For example, electricity grid investments that we have around the world could be disrupted by more local power generation, rather than everything coming from one central power station. That's something that we have to be aware of as storage technologies improve. We anticipate that they're going to grow at a very rapid rate. We anticipate that storage is going to grow five times in the next five years, for example. It's the fastest-growing part of renewables. That can disrupt a lot of what we thought were more stable, long-term infrastructure investments around the world.
It's a really complex and multi-faceted area that we look at, but we look at every single investment on that basis.