This paper presents a method based on a new interpretation of the concept productiveness in order to manage local energy resources through smart loads. The assumption that electricity demand is almost completely inelastic is changing as a result of deregulated wholesale markets. In this line, the smart building and plug-in hybrid electric vehicle promise flexibility of building energy and comfort management. Productiveness as defined in this paper is a means of meeting two objectives: cost and quality for a group of electrical charges with renewable penetration and/or real-time prices. This concept assesses how well one unit of energy (kWh) performs the task that it has been assigned, but it is not an econometric model for forecasting demand. The concept of productiveness according to the focus of the present study permits the users to monetarily evaluate the use of their electrical energy, enabling the management of different loads. As a starting point, in the simulations presented in the framework of a bioclimatic building and electric vehicles, this new interpretation responds as expected.