Purchase agreements for plants supplying power, steam, water or other utilities to their offtakers typically include guarantees to ensure that the plant is operated efficiently and maintained diligently over the contract term. In particular when the fuel is provided by the offtaker, the efficiency guarantee must be evaluated continuously, and deviations from the contracted guarantees may lead to significant bonuses or penalties on top of the payments for the deliverables.
Fuel efficiency by nature varies with operating conditions, and such variations must of course not result in any commercial impact on the monthly bill to the offtaker. The correction of the fuel efficiency to a contractual reference state protects the supplier, because otherwise, if the plant was dispatched at low load or under disadvantageous ambient conditions, the supplier would be penalized without fault. Vice versa, the offtaker must be provided with a benchmark for efficiency guarantees that is valid under all operating conditions. The use of a detailed thermodynamic model representing the entire power plant process – a so-called Fuel Demand Model (FDM) – has proven to be the best solution for calculating guaranteed fuel efficiency in daily operations, because for a plant with multiple possible combinations of the equipment and high interdependency of the generators, as for instance a combined cycle power plant, simple overall equations or look-up tables may lead to erroneous results, since even a family of corrections curves cannot correctly represent all possible operating modes of such plant.
This webinar introduces the concept of and the key requirements for a Fuel Demand Model (FDM) for independent power plants.
ENEXSA is a leading provider of plant accounting and settlement systems and fuel demand models that has been active in the Gulf Region since more than fifteen years and was the first to supply such systems to Morocco, Bangladesh and Myanmar. As of May 2023, ENEXSA has successfully delivered settlement systems for thirty-seven IPP and IWP plants with total nominal production capacity of about 34.5 GW of power and 8 million m3/day of desalinated water.
Please join our webinar on Tuesday, June 6th, 2023, at 10 a.m. CET to learn more about these important software systems for independent power and cogeneration plants.
Key learning objective:
- Understand the purpose and functionality of a Fuel Demand Model
- Understand the on-line and off-line application of the FDM for evaluation of efficiency guarantees
- Know the key qualities of a Fuel Demand Model
- Know the information requirements to define a Fuel Demand Model
