This Ph.D. dissertation deals with the pricing of derivatives on electricity price. The first part is a theoretical extension of Arbitrage Pricing Theory: we assess the problem of pricing contingent claims when the financial agent has the possibility to transform assets by means of production possibilities. We propose a specific concept of arbitrage for such portfolios in discrete time for markets with proportional transaction costs. This allows to show the closedness property, portfolio optimization problem or a super-hedging theorem. We then study such portfolios with financial possibilities in continuous time, with or without frictions. We apply these results to the pricing of futures contract on electricity. In the second part we introd...