Fsr Energy & Climate

Today, in Europe electricity prices are determined per (bidding) zone which equals in most cases a country. Under zonal pricing, only transmission capacity limitations between the zones are considered in the market-clearing process. The transmission lines within a zone are assumed to have unlimited capacity. This assumption is more and more challenged; one factor is the changing pattern of network flows due to the integration of renewables. As a result, Europe’s less-than-optimal zonal configuration is becoming a limiting factor for the efficiency of the market integration process. One remedy could be to build more transmission lines. This option is however costly and takes a lot of time. Another remedy could be to redraw the boundaries of the different bidding zones, a so-called bidding zone review. In the extreme, the zones could be determined so small up to the point that each node of the transmission network is priced; this is nodal pricing. With nodal pricing, limitations on all transmission lines are