In that case the outcome is similar to capacity markets discussed later. In any case, such option products require well-functioning 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 ramp-up or ramp-down 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 short-term, flexible products markets, using existing electronic market platforms as the tertiary reserves market.