and then calculating the Sharpe ratio using a standard deviation of the total trades. But I don't think this is correct. For the formula to be correct, you would need to first get an average daily standard deviation, and use that in the Sharpe ratio. Another way is to use the following...
This paper aims to make contribution to limited number of portfolio optimization studies in electricity markets and to provide proper risk management techniques for decision makers and other stakeholders in electricity markets. To the best of author knowledge, the study of Sharpe ratio together with Tr...