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Using a Ledger to Facilitate Autonomous Peer-to-Peer Virtual Net Metering of Solar Photovoltaic Distributed Generation

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Publication data
Type Paper
Title Using a Ledger to Facilitate Autonomous Peer-to-Peer Virtual Net Metering of Solar Photovoltaic Distributed Generation
Description
Authors
Year 2024
Language English (en)
Location Canada
License CC-BY-SA-4.0
Cite as Julia M. Groza, Seyyed Ali Sadat, Koami S. Hayibo, Joshua M. Pearce, Using a ledger to facilitate autonomous peer-to-peer virtual net metering of solar photovoltaic distributed generation, Solar Energy Advances, 4,2024,100064, https://doi.org/10.1016/j.seja.2024.100064. (https://www.sciencedirect.com/science/article/pii/S2667113124000147) Academia open access prepint


To assist electric utilities to overcome limitations of centralized billing and encourage distributed production of solar photovoltaic (PV) electricity, this study designs and assesses a novel open-source autonomous virtual utility to monitor users and enable peer-to-peer trading. This study provides system design and software implementation of the concept using blockchain technology written in Solidity and Truffle. A set of smart contracts adds users to a system and monitors their demand, PV generation, and facilitates transactions between users on an hourly basis when one user has PV-generated excess electricity, and another has demand. Unit tests for each of the contracts’ methods are developed in Solidity, and data on gas usage and costs is collected. Once the contracts have been written and evaluated, a JavaScript simulation is developed to use the contracts on real load and PV generation data for one year on an hourly basis. The results of two case studies are quantified: 1) true peers, where all houses are prosumers with rooftop PV, and 2) intermittent transition case, where PV deployment and demand are more varied. The results found that with ten users in the system, the true peers case study resulted in an uneconomic number of exchanges, but the intermittent transition case study resulted in more than a factor of twenty increases in exchanges and net cost savings. The savings more than doubles for both cases when time of use pricing is in effect. The system utility increases with more variability of PV production across participating users and is recommended for utilities targeting increases in distributed generation during the energy transition.

Source Code

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Highlights

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  • Designs/tests novel open-source autonomous virtual utility: monitor users, enable peer-to-peer trading.
  • Provides system design and software implementation of the concept using blockchain technology
  • Smart contracts adds users, monitors their demand, PV generation, and facilitates transactions
  • True peers, prosumers with rooftop PV and intermittent transition cases tested
  • Intermittent transition case study resulted 20C increase in exchanges and net cost savings; 2X for TOU.
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See also

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In the News

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  1. Novel blockchain-based virtual utility for P2P PV trading PV Magazine
    1. PV Mag USA
    2. Sun Power Energy News
  2. Novedosa utilidad virtual basada en blockchain para el comercio fotovoltaico P2P PV Magazine Latin America
    1. PV Magazine Spain
    2. PV Magazine Mexico
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