Three Years of Experience with the SoDa Web Service Delivering Solar Radiation Information: Lessons Learned and Perspectives

Abstract

Information on solar radiation is a critical issue in several environmental domains as well as for sun-powered systems. The present means for accessing information by users present several severe drawbacks. Three major problems were identified and should be solved to supply users with relevant information: improved access to information, improved space and time description / knowledge of the radiation field and related quantities, improved matching to actual user needs. The SoDa project was launched (2000-2003, IST programme of the European Commission) to bring solutions by an efficient use of advanced information and communication technologies. An integration of information sources of different natures was initiated by the SoDa Intelligent System (see online at http://www.sodais. com). These sources include databases containing solar radiation parameters and other relevant information; several of them originate from the processing of images taken by satellites. The sources also include user-oriented applications. The successive prototypes of the SoDa Service were validated through users trials. The outcomes of the project SoDa represent a significant step forward beyond the current state of the art and include substantial original work. The main innovations of SoDa are to offer a smart access to diverse networked sources of information that are geographically dispersed, and to supply users with information of high quality. Surveys of users demonstrated that large gains in terms of efficiency, costs, etc. were expected by engineers, companies, agencies and research institutes if relevant information were more easily available for virtually any geographical location at any time. Accordingly, it was decided in 2003 to create the SoDa Service and to operate it. During these past three years, the SoDa Service underwent several improvements, all aiming at consolidating it with respect to access by users. Improvements were made on the SoDa Intelligent System, including works on the user interface and on the presentation of the services. Promotion efforts were made towards media, including TV. The effective use of the SoDa Service is increasing from year to year. In 2003, 2000 requests for information were satisfied; in 2004, 20 000 requests; 35 000 are expected in 2005. This communication presents the lessons learned from the past and the perspectives of the SoDa Service. We discuss the sustainability of the SoDa Service, the technologies used and the approach to customers, in the perspective of developing a B2B merchant site.