Modeling Non-Energy Dispatch Actions in SEM

This proposal advocates for modeling non-energy dispatch actions in the energy market system (SEM). It highlights the importance of accounting for energy consumption in modes not currently modeled in SEM, such as synchronous compensator mode. Implementing specific dispatch instructions for non-energy actions is suggested to ensure units pay for their consumption accurately. Failure to implement this proposal may lead to continued reliance on out-of-market contracts for non-energy services, hindering efficient system support and accounting for energy consumption in new technologies.

• Energy Market
• Dispatch Actions
• System Services
• SEM
• Energy Consumption

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Uploaded on Nov 20, 2024 | 0 Views

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1. Payment for Energy Consumption in SEM for non-energy Services Dispatch Niamh Delaney

2. Background to Proposal Not all generator modes are modelled in SEM The TSOs may need to dispatch a unit for system support reasons, for example into synchronous compensator mode to provide increased voltage support or dispatch a wind farm which can provide reactive power at 0MW When operating in such modes, units consume energy, which is not accounted for in SEM

3. Proposal To ensure that non-energy dispatch actions are modelled in SEM Implementation to be determined Specific dispatch instructions for e.g. sync comp mode could be created and profiled such that if dispatched to consume in the energy market the unit pays for its consumption, while if dispatched for non-energy actions, the associated energy consumption is treated as an imbalance

4. Implications of not implementing the proposal Out-of-market contracts and associated energy payments will continue to be required to account for dispatch of units to provide non-energy services With increasing requirements for system services and increasing provision of such services from new technologies which may consume energy to provide such services, there needs to be a way of accounting for this energy consumption