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Germany's solar sector achieved a historic monthly milestone in July 2026 by feeding 12 billion kilowatt-hours of electricity into the public grid. According to an evaluation by the Internationales Wirtschaftsforum Regenerative Energien (IWR) in Münster, which analyzed quarter-hourly grid data from ENTSO-E, this figure reflects only power supplied to the grid and excludes on-site self-consumption.
During July, solar generation reached an average peak output exceeding 40,000 megawatts at midday, matching the output of more than 40 nuclear power facilities operating at 1,000 megawatts each. This daily generation offset significant portions of electricity normally produced by gas and coal plants, underscoring photovoltaics' growing role in the national energy network.
The expansion has transformed solar power from a supplementary energy source into a primary pillar of Germany's electricity grid. This progress was driven over the past two decades by investments from millions of private property owners, agricultural operations, and commercial enterprises.
Amid shifting legal frameworks for smaller photovoltaic installations, IWR CEO Dr. Norbert Allnoch emphasized the need for precise discussions regarding EEG differential costs, noting that the term "solar subsidy" is frequently misunderstood. He clarified that public funds do not fully cover every kilowatt-hour supplied to the grid; rather, the Renewable Energy Sources Act compensates new systems only for the margin between market exchange prices and the statutory feed-in tariff.
New residential solar installations currently receive a statutory tariff of approximately 7 cents per kilowatt-hour. Under the differential cost model, power is first sold on the exchange market and revenues enter the EEG account, with compensation drawn only when the market price falls below the fixed tariff, or leaving funds in the account when exchange prices exceed it.
Current EEG differential costs are predominantly shaped by legacy installations built between 2010 and 2013, which command guaranteed tariffs between 30 and over 40 cents per kilowatt-hour due to higher historical installation expenses. Because these 20-year agreements will phase out progressively between 2030 and 2033, overall historical differential expenses will not drop substantially until those contracts expire.
Originally reported by renewable-energy-industry.com on Aug 3, 2026.
