in that case the outcome is similar to capacity markets discussed later in any case such option products require wellfunctioning energy markets in particular that electricity prices can be high enough during scarcity conditions this may be the case for products to solve network congestion counter trading products to rampup or rampdown capacity to follow demand and renewable output variations or products for voltage control during certain hours some countries such as spain are considering the creation of new shortterm flexible products markets using existing electronic market platforms as the tertiary reserves market