As of 30 October 2026, the key question for many homeowners in Germany is how a new photovoltaicssystem with a battery storage system can be made economically viable without government subsidies: while the Federal Ministry for Economic Affairs is pushing ahead with the Renewable Energy Sources Act amendment and the gradual abolition of fixed feed-in tariffs , self-consumption strategies and technical adjustments are the key factors in achieving profitability. The Federal Network Agency continues to document current support rates and phase-out arrangements; the practical recommendations are also drawn from consumer information and studies. ([bundeswirtschaftsministerium.de](https://www.bundeswirtschaftsministerium.de/Redaktion/DE/Pressemitteilungen/2026/07/20260729-eeg-novelle-und-netzanschlusspaket.html?utm_source=openai))
The key to economic viability is the price difference between electricity fed into the grid and electricity avoided from the grid. Current calculations show that every kilowatt-hour used directly in the home replaces significantly more expensive grid electricity; this makes high self-consumption more valuable, particularly with household electricity prices in 2026 well above previous levels. A medium-sized battery increases the proportion of electricity that can be used on site and shifts consumption to hours with less sunshine. Studies and consumer information websites offer these guidelines: choose a storage capacity suited to daily generation, shift the use of appliances to different times and, where appropriate, use smart control systems. ([adac.de](https://www.adac.de/rund-ums-haus/energie/versorgung/einspeiseverguetung-oder-eigenverbrauch-solarstrom/?utm_source=openai))
A practical recommendation is to assess economic viability using specific figures: the purchase costs of solar panels and battery storage, expected annual yields, the self-consumption rate after installing storage, and the remaining options for feeding electricity into the grid at current support rates. Owners of older systems should also check the rules for systems over 20 years old; systems that have been operating for more than 21 years are subject to separate follow-on remuneration arrangements and options for switching to self-consumption only. The consumer advice centre summarises these options and points to individual steps for assessing them. ([verbraucherzentrale.nrw](https://www.verbraucherzentrale.nrw/wissen/energie/erneuerbare-energien/photovoltaik-was-tun-mit-der-ue20anlage-wenn-die-eegfoerderung-endet-50846?utm_source=openai))
Impacts and interests: For households, a suitably sized battery increases independence from volatile electricity prices, while suppliers and grid operators will have to develop new models for redistribution and marketing. Politically, the Renewable Energy Sources Act amendment will change the market structure and gradually move smaller systems towards direct marketing ; this will require new services such as virtual storage, flexible tariffs and aggregated marketing offers. For homeowners, the current position is that profitability without subsidies is possible when technical adjustments, shifting consumption and a realistic cost-benefit analysis are combined. The statements and figures in this article are based on publications from the Federal Network Agency and the Federal Ministry for Economic Affairs, consumer information and current specialist reporting; individual decisions should be checked against specific offers and metering data. ([bundesnetzagentur.de](https://www.bundesnetzagentur.de/DE/Fachthemen/ElektrizitaetundGas/ErneuerbareEnergien/EEG_Foerderung/artikel.html?utm_source=openai))
Editor: Phillipe Schmidt-Araguin (Article created with AI assistance).