In the 2011 annual report to the state legislature on the cost effectiveness of Michigan’s Renewable Energy standard, it was revealed that wind bids have been coming in far cheaper than anyone expected they would. In fact, even without the federal production tax credits, they’re far cheaper than new coal fired generation ($61/MWh for wind vs. $107-133/MWh for new coal). Interestingly, Xcel’s 2011 resource plan lists the cheapest new generation option in Colorado as being natural gas combustion turbines… at $60/MWh. So wind is cheap. It’s also very low risk. So how do we get more of it?
It’s often been said that “time is money,” and it turns out to be more than an aphorism.
I’m going to try and tell you a story about discounting, which is one of the ways that we convert between time and money. The story has broad implications for the energy investments we choose. It’s not entirely straightforward, and if it’s going to make sense there are some background pieces you’re going to need. The background is important because the ending depends not only on understanding what is being done, but why. This story happens to be about Xcel Energy and Colorado, but the same thing happens in other places, with other companies, and in other contexts too.
To greens my argument may seem circumspect. I’m not going to challenge the doctrine of Everlasting Economic Growth. I’m not going to look at the large externalized costs of burning fossil fuels. I’m not going to argue against the monopoly electrical utility model. Those are important discussions to have — they’re just not the one I’m having here. What I’m trying to do is show that a minor change in the way we calculate the cost of future energy can drastically alter what kind of power we decide to invest in for the next century, even if we only look at the decision in selfish financial terms.
To the finance geeks among you, much of the background will be familiar, but the situation may seem strange unless you’re familiar with how regulated monopolies work. I haven’t been able to find anyone familiar with energy finance who thinks what we’re currently doing makes sense, but if you’ve got a thoughtful rebuttal, I’m genuinely interested to hear it.