Monotonic marginal pricing: demand response with price certainty

  • Authors:
  • William G. Temple;Richard T.B. Ma

  • Affiliations:
  • Advanced Digital Sciences Center, Singapore;Advanced Digital Sciences Center, Singapore & National University of Singapore

  • Venue:
  • ACM SIGMETRICS Performance Evaluation Review
  • Year:
  • 2014

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Abstract

In this paper we develop a general dynamic pricing scheme based on consumer-indexed marginal cost, and demonstrate its properties in a simulated electricity market derived from New York ISO data. We show that monotonic marginal (MM) pricing provides price certainty, ensuring that every consumer's instantaneous price is non-increasing for a constant consumption level. Additionally, we show that MM pricing ensures budget balance for energy suppliers, allowing them to recover any operating costs and a profit margin. Using a Summer 2012 peak load day as a case study, we simulate a population of over 25000 electricity users and evaluate the performance of an example MM pricing plan versus historical real-time prices under various demand elasticities. The results demonstrate that MM pricing can provide system-level demand response and cost savings comparable with real-time pricing, while protecting consumers from price volatility.