Prosumers in many regions are facing reduced feed-in tariffs and currently no possibility to influence the level of remuneration for the locally solar energy. Peer-to-peer communities may offer an alternative to the-in tariff model by enabling prosumers to directly sell their solar energy local consumers (possibly at a rate that is beneficial for both consumer and). The Quartierstrom project investigates a transactional energy system manages the exchange and remuneration of electricity between consumers, and the local electric grid provider in the absence of. This whitepaper describes the prototypical real-world system implemented in the town of Walenstadt, Switzerland, with 37 participating. The community members of this pilot project pay a reduced tariff grid usage if the electricity produced by a prosumer is sold to another member, which is located on the same voltage or grid level downstream substation1. Such a tariff structure incentivizes local balancing, i.e. produced energy can be consumed locally whenever possible to avoid from higher grid levels. The blockchain is a novel technology suitable to the produced and consumed units of energy within a community, making it to implement market places. In those marketplaces, both prosumers and can indicate a price at which they are willing to sell / buy locally solar energy without the intermediation of a utility. The key goals of project are the assessment of A) the technical, economical and ecological of a blockchain-based community energy system regarding local of solar energy, grid quality and energy efficiency and B) dynamics regarding local market prices and user acceptance.
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Ableitner et al. (2019) studied this question.