On the carbon footprint, in our sustainable investing report, on page 61, we disclose—using both scope 1 and scope 2 definitions—the amount of greenhouse gas emissions from the portfolio. We also disclose it on an equity ownership basis, so the per cent of equity ownership and also the per cent of the long-term capital structure that we own. This is across all assets across the portfolio.
To give you a number—and this is challenging work; there are a lot of estimates that go into this—we use, as much as we can, specific information that is disclosed by the companies we invest in. However, it's about 25.7 million tonnes of carbon dioxide equivalent, based on long-term capital ownership. That is the amount of our total carbon emissions across the fund.
As I say, it's challenging. We have used S&P Trucost, a division of S&P, to try to get to as accurate a number for the companies, where we are using proxies and estimates, but that is.... At the moment, the based-on proxy data is about 53% of that number, 18% is coming from company-reported data and14% from Trucost models. That gives you a sense of the amount of carbon emissions from the total portfolio.
With respect to your second question, I'm not sure I have the numbers completely at hand on how many people sit on oil and gas company boards. Generally, across all of our invested companies, we have about 190 board positions for all of the boards we sit on across all the portfolio companies. Some of these are direct. Some are our employees sitting on company boards, and some of are where we will find a particular expert we think is appropriate for that position to act on our behalf. A handful of those will be on traditional energy boards.
Again, another cut would be that if you look at the overall portfolio and how much we have invested in traditional energy, it's about 2.8% of the portfolio at year-end. Our renewables portfolio right now is over 2.2% at last count, and climbing rapidly. I would imagine that in the short term our renewables portfolio percentage will exceed the amount we have in traditional energy, and that makes sense given the move along the energy transition.