I am no longer accepting work in the electricity area. But see these pages: PSE Errata and The Great Energy-Only Fallacy, and check the blog post category: Electricity Markets.

Power System Economics is available in English,  Chinese,  Russian, and Farsi (Persian). Errata can be found here.

More recent work, especially regarding capacity markets can be found under Books and Papers.

Here’s a new book, The Economics of Electricity Markets, Wiley, that looks good.