Contracts, especially long-term contracts, for battery energy storage systems (BESS) can be somewhat of a mystery because there is very little accessible information on them. Exchanges with customers have made it all the clearer that tolling agreements, floor prices and PPAs often cause confusion, especially in relation to short-term trading arrangements. Of course, contracts are highly unique in their outlines due to asset specifications and negotiated clauses, but you can consult example 1 and example 2 for reference. This article explores tolling agreements and floor prices for battery systems in an interview with storage specialist Andras Molnar.