Pricing and Energy Trading in Peer-to-Peer Zero Marginal-Cost Microgrids
Efforts to utilize 100% renewable energy in community microgrids require new approaches to energy markets and transactions to efficiently address periods of scarce energy supply. In this paper we contribute to the promising approach of peer-to-peer (P2P) energy trading in two main ways: analysis of a centralized, welfare-maximizing economic dispatch that characterizes optimal price and allocations, and a novel P2P system for negotiating energy trades that yields physically feasible and at least weakly Pareto-optimal outcomes. Our main results are 1) that optimal pricing is insufficient to induce agents with batteries to take optimal actions, 2) a novel P2P algorithm to addresses this while keeping private information, 3) a formal proof that this algorithm converges to the centralized solution in the case of two agents negotiating for a single period, and 4) numerical simulations of the P2P algorithm performance with up to 10 agents and 24 periods that show it converges on average to total welfare within 0.1% of the social optimum in on the order of 10s to 100s of iterations, increasing with the number of agents, time periods, and total storage capacity.
- Research Organization:
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE National Renewable Energy Laboratory (NREL), Laboratory Directed Research and Development (LDRD) Program; National Science Foundation (NSF)
- DOE Contract Number:
- AC36-08GO28308
- OSTI ID:
- 1833344
- Report Number(s):
- NREL/JA-5D00-79672; MainId:35893; UUID:0b0b4075-207d-42f3-8182-8e270608e5df; MainAdminID:63364
- Journal Information:
- IEEE Transactions on Smart Grid, Vol. 13, Issue 1
- Country of Publication:
- United States
- Language:
- English
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