The Cost of Power Generation: The current and future competitiveness of renewable and traditional technologies

Since the publication by Business Insights of the last report into the cost of electricity there has been a massive change in global economic conditions as a result of the ramifications of the 2008 banking crisis. This has caused fuel and commodity prices to fall, as well as leading to a severe tightening in lending. The power sector still remains an attractive area for investment but investors are now more cautious than previously. Global warming continues to be a dominant theme but alongside that there is a new pragmatism about fossil fuel combustion which will continue to dominate the power sector for another generation at least. Meanwhile renewable sources of generation continue to advance, led principally by wind power but with solar capacity growing rapidly too, though from a small base. Electricity is the most important energy source in the modern age but also the most ephemeral, a source that must be consumed as fast as it is produced. This makes modeling the economics of electricity production more complex than carrying out the same exercise for other products. Accurate modeling is important because it forms the basis for future investment decisions. In the electricity sector two fundamental yardsticks are used for cost comparison, capital cost and the levelized cost of electricity. The latter is a lifecycle cost analysis of a power plant that uses assumptions about the future value of money to convert all future costs and revenues into current prices. This model is widely used in the power industry but has some significant failings, particularly in its ability to handle risk. Even so these two measures, together, are the first consulted when power sector investment and planning decisions are to be made. Production of electricity has always involved an element of risk but this has been extended, and in some cases magnified by the introduction of liberalized electricity markets. One big source of risk is fuel price risk. If an investment is made today based on a predicted cost of natural gas that turns out to be wildly in error because prices soar, as has happened during the past decade, then that investment will be in danger of failing to be economical to operate. Therefore some measure of the risk of fuel price volatility should be included in any economic model. Other risks arise where large capital investment is required in untested technology. Meanwhile the liberalized market has introduced new types of risk more often associated with financial markets. The latter has led to the use of some tools more commonly seen in the financial market for managing electricity sector investment. Of these some of the most interesting today are portfolio management tools.