RTUEE / EC / EEEYr 2024 · Sem 52024

Q1Restructured Power System

Question

2 marks

Q.1. What do you mean by Nodal Pricing?

Answer

Nodal pricing is an electricity pricing method where the price at each network node (bus) reflects the actual marginal cost of supplying power at that specific location, accounting for generation cost, losses, and transmission congestion.

Nodal pricing (also called Locational Marginal Pricing, LMP) is an electricity market pricing mechanism in which the price of electricity is calculated separately for each node (bus) of the transmission network, reflecting the true marginal cost of supplying one additional unit of power at that exact location — this cost includes the marginal generation cost, the marginal cost of transmission losses, and any congestion cost arising from binding transmission constraints between that node and the rest of the system, giving economically efficient locational price signals that can differ significantly between nearby nodes when congestion is present.

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