In many sectors, it is customary to use a supply contract with a capacity reservation mechanism. In this contribution, we focus on a multi-year capacity reservation contract between a buyer who buys a single type of product and sells it to end customers and two or more heterogeneous suppliers who produce and reload the product as contractually agreed. Art.6.57 The capacity of the gas contract may not exceed the capacity indicated in the capacity reservation agreement. Section 6.25 if the application is accepted, the NGTU sends the applicant, within ten working days following Dernot, a mark-up contract based on the model in force by the Internet and by mail. This document develops a mathematical model with several key characteristics of a real contract for a single supplier situation from the buyer`s point of view. It is then extended to a multiple supplier model for a system where there are several heterogeneous suppliers, with different capabilities and prices. A strategy for implementing the rolling horizon is proposed for effective application of the models. Important computational experiments show that the model and strategy can achieve cost-effective contractual terms for the buyer in seconds. Article 6.26 The applicant submits the capacity reservation contract signed by the NGTU within 15 working days of receipt of the proposed capacity reservation contract. ComEd has agreed to compensate Chicago for any non-compliance by Midwest Generation as part of the capacity reservation agreement.
Section 6.27 if the applicant does not submit the draft capacity reservation agreement signed within the time frame of Article 6.26, the request for the provision of gas transport services is rejected and the applicant is immediately informed by the NGTU.