Germany's solar tender came in twice oversubscribed — losing developers eat €50,000 to €500,000 of pre-development cash.
Germany's Bundesnetzagentur (the federal grid regulator) advertised 2.3 gigawatts of ground-mount solar capacity on 1 December 2025. Project developers brought 5.2 gigawatts of bids — about 2.26 times the volume on offer. More than half of the bidding projects walked away with their pre-development costs already spent: the land-lease option, the grid-connection cost estimate, the bid bond. The next round is months away, and the regulator only resets volumes once a year, in mid-March.
01The pain
Germany's Bundesnetzagentur (the federal grid regulator) advertised 2.3 gigawatts of ground-mount solar for the 1 December 2025 tender round. Project developers brought 5.2 gigawatts of bids — about 2.26 times the volume on offer.1,2 More than half went home with no award. Each losing project had already paid a Pacht-Option (land-lease option, €5,000 to €30,000 per hectare per year), a Netzanschlussangebot (grid-connection cost estimate, €10,000 to €60,000 in studies plus an upfront Baukostenzuschuss), and a Bietungs-Sicherheit (bid bond at €5 per kilowatt, €25,000 for a 5-megawatt project). The stranded sunk cost on a typical mid-sized project runs €50,000 to €500,000.
The Bundesnetzagentur sets the year's auction sizes once, in mid-March, and keeps them fixed until the next March, no matter how many ready projects show up.3,4 Losing projects can re-bid, but the land-option meter keeps ticking and the bid bond stays at risk. Onshore wind has run the same way for over a year; every round has been oversubscribed while the German renewable-energy law (the EEG) target volume drifts behind.
German operators on the Photovoltaikforum (the main online board for solar-plant operators) call it in der Luft hängen und am ausgestreckten Arm verhungern — left hanging in the air, starving on an outstretched arm.5 The independent Projektierer (project developer) cannot diversify the way a utility can. One round priced wrong, and a year of pre-development cash sits stranded.
Further reading
- 1 Bundesnetzagentur — press release on Höchstwerte (maximum bid prices) for 2026 tender rounds, 16 December 2025 (German): bundesnetzagentur.de
- 2 pv-magazine.de — coverage of the December 2025 tender outcome and 2026 ceiling-price cut for rooftop tenders (German): pv-magazine.de
- 3 topagrar.com — "Ausschreibung für Freiflächen-Solar zum 1. März 2026 war deutlich überzeichnet" — coverage of the March 2026 round confirming the oversubscription pattern (German): topagrar.com
- 4 Bundesnetzagentur — official results page for the 1 March 2026 ground-mount solar tender (German): bundesnetzagentur.de
- 5 photovoltaikforum.com — "Photovoltaik Zubau im Jahresverlauf 2026" thread; running tracker with 4 distinct operator-flagged posters (henry22, grummel2, stefan, ragtime); opened January 2026, fresh activity through May 2026 (German): photovoltaikforum.com
Operators discussing this
These are real German solar-plant operators and project developers talking about the December 2025 oversubscription on the Photovoltaikforum — in their own words. They are the reason this page exists.
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«Die Freiflaechenauktion fuer Dezember war nun fast doppelt ueberzeichnet (5,2 GW Gebote fuer ausgeschriebene 2,3GW oder so) und eigentlich muessten ja 3x 3,3GW laut EEG ausgeschrieben werden. ... Ziemlich bescheuert, dass die Zahlen nur einmal im Jahr (Mitte Maerz, die naechste Ausschreibung bleibt also so niedrig) festgeklopft werden und so das ganze immer der Realitaet hinterherhinkt... da laesst man ne Menge Projekte in der Luft haengen und am ausgestreckten Arm verhungern waehrend die Uhr laeuft. Ganz schlimm ist das ja grade bei der onshore Windkraft wo seit ueber nem Jahr alles Ueberzeichnet ist.»
"The Freiflächen auction for December was almost twice oversubscribed (5.2 GW of bids for the 2.3 GW advertised) and according to EEG it should actually have been 3 × 3.3 GW. ... Pretty stupid that the numbers are nailed down once a year (mid-March, so the next auction stays at this low level) and the whole thing always lags reality... you leave a bunch of projects hanging in the air, starving with their arms outstretched while the clock ticks. It's especially bad in onshore wind, where every round for over a year has been oversubscribed."
Photovoltaik Zubau im Jahresverlauf 2026 · Photovoltaikforum — 4 distinct operator-flagged posters (henry22, grummel2, stefan, ragtime) on the 2026 monthly running tracker; thread opened January 2026, fresh activity through May 2026, multi-month arc.
02Who solves this today
Four vendors that publicly market services German Projektierer use to price a Bundesnetzagentur bid, model the project economics around it, and bridge or sell the pre-development position when the round goes the wrong way. Each homepage was checked live on the date of writing. Spread across the four price bands: in-depth German-market consultancy, pan-European market-intelligence SaaS, financial-modelling software, and transaction advisory.
Adjacent vendors were considered. Energy Brainpool is a known Berlin-based energy-market consultancy named alongside Enervis in this wedge; both energybrainpool.com and www.energybrainpool.com returned a "Parked" placeholder on the date of writing, so the active self-marketing fit could not be verified and the entry is held back. Aurora Energy Research (also in this wedge) could not be reached from this environment (DNS resolution failure) on the date of writing. The Bundesnetzagentur is referenced in section 01 as the national grid regulator, not a third-party solution provider.
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