Designing electricity transmission auctions

Abstract

The UK has ambitious plans for exploiting offshore wind for electricity production in order to meet its challenging target under the EU Renewable Energy Directive. This could involve investing up to 20bn in transmission assets to bring electricity ashore. An investment of this magnitude calls for an efficient mechanism to determine which projects get financed and ensuring that only those projects that are selected can be delivered at least costs to consumers. The electricity regulatorﾒs ongoing tender auctions are likely to work well for point-to-point transmission and for networks already built. However, it is still unclear what kinds of models could be considered for complex meshed offshore (and onshore) networks where licences are granted not only to own and operate, but also to build a transmission network. This paper provides an extensive survey on the current theory and experience of auctions. The main objective is to discuss the design of auctions for transmission assets in which bidding for packages of transmission assets is a possibility.