The integration of business and operational processes is today of major importance in a wide range of industries, from the manufacturing industry to the utilities one. The challenge is to seamlessly integrate software applications supporting business activities and field devices belonging to the plant floor. However, it is clear that the goal of seamless integration is far from easy to achieve. It requires to build Internet-scale distributed systems in complex, heterogeneous environments characterized by stringent requirements regarding security and evolution in particular. In order to meet these requirements, distributed architectures based on the service-oriented paradigm have been proposed. This paper argues that the service-oriented development is too technology-driven. We propose a reusable MDE approach for service development in power distribution industry. The developer focuses on application logic. The considered service-technology is taken into account in the last phase of service's development. The approach is currently tested for a service-platform based on the OSGi technology.