LOAD RESEARCH FOR ASSESSING THE ENERGY MARKET AND DEMAND-SIDE MANAGEMENT POTENTIAL

A. Martins(1)(2)

A. Gomes(1)(2)

D. Coelho(2)(4)

J. Sousa(5)

F. Pinto de Carvalho(3)

M. Batista(3)

V. Jorge (3)

(1) FCTUC†††††††††††† (2) INESC

Rua Antero de Quental, 199 3000 - 033 COIMBRA/Portugal

Telef. 351 39 83 26 89 Fax. 351 39 82 46 92

(3) EDP/CENEL (4) IPC-ISEC (5) IPS - EST

 

Abstract

 

In order to delineate adequate strategies to deal with problems such as mid-term capacity shortage, competition of other final energy suppliers or the need for better estimates of consumption for billing purposes, in a market in transition, CENEL decided to perform load research in collaboration with a R&D institution. This should lead to a better understanding of demand structure, electricity use patterns, relative importance of various end-uses, trends of electricity market share evolution, opportunities for cost-effective demand-side interventions and, in general, to an increased capability of improving the utilityís image. The paper presents the main methodological and operational issues of this project, and the results obtained.Project planning has followed standard project management procedures, with emphasis on activity monitoring. The projectís field work consisted of two main types of activity: launching of questionnaires previously prepared according to the identified information needs; collection of load curves with adequate automatic monitoring equipment, after selecting the customers whose consumption would be monitored from those who were willing to participate. Data collection has been performed both of global load diagrams of customers and of diagrams of end-use loads, at the residential and the service sectors, in the LV grid. The paper presents the main conclusions reached and the lessons drawn from contacts with customers - namely for improving CENELís marketing strategies. Feed-back on the results of the monitoring campaign have been provided to the customers involved. Diversified demand curves have been obtained for several end-use loads and for the main customer classes.