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Aligning prosumers with the electricity wholesale market – The impact of time-varying price signals and fixed network charges on solar selfconsumption

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PV-battery systems are currently not operated in an energy system optimal way as their operation heuristic
(maximization of self-consumption) is generally unaffected by competitive market signals. To evaluate potential
regulatory intervention, we propose a market alignment indicator which measures the relative economic efficiency
of a prosumer battery compared to a benchmark system that is completely responsive to wholesale market
prices. Investigating the case of PV-battery systems in Germany, we find that scarcity signals transmitted to
prosumers improve the market alignment of PV-battery systems while retaining similar levels of self-consumption
and autarky rates. Both dynamic prices for generation (time-varying feed-in remuneration) and consumption
(real-time electricity prices) can improve welfare, that is lowering consumer expenditures for electricity
at the wholesale market. The effectiveness of the respective instrument mix depends on the relative levels
of the feed-in tariff, the grid consumption to be saved and the solar generation costs. Accordingly, increasing
fixed network charges can have a significant positive impact on the market alignment of prosumer batteries if
combined with dynamic prices, as they change the relative composition of retail prices.
1. Introduction
The levelized cost of electricity (LCOE) of solar photovoltaics (PV)
has fallen rapidly in recent years, a development that is transforming
energy markets worldwide (Agnew and Dargusch, 2015; Bazilian et al.,
2013; Breyer et al., 2017; Farmer and Lafond, 2016; Green, 2016). In
many countries around the world, the LCOE of solar PV is now below
the household retail electricity price (Lang et al., 2016). From the
consumer's point of view, there is thus an incentive to produce and
consume solar electricity directly on-site, as this saves the difference
between the household electricity price and the generation costs (Schill
et al., 2017). In Germany, for example, household consumers are subject
to average retail electricity prices of around 0.29 Euro/kWh
(BDEW,

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Ketersediaan

EJ2037

My Library

Tersedia

Informasi Detil

Judul Seri

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No. Panggil

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Penerbit

Elsevier Ltd. : ., 2019

Deskripsi Fisik

16 p.

Bahasa

ISBN/ISSN

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Klasifikasi

NONE

Tipe Isi

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Tipe Media

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Tipe Pembawa

online resource

Edisi

Energy Policy 134 (2019) 110901

Subyek

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Info Detil Spesifik

Ejurnal

Pernyataan Tanggungjawab

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Versi lain/terkait

Lampiran Berkas

Komentar

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