The Federal Network Agency has released the outcomes of the auctions conducted on October 1, 2025 for biomass plants and solar projects located on buildings and noise barriers. This round marked the first biomass tender under the revised framework introduced through the February 2025 update to the Renewable Energy Sources Act. The revised scheme, cleared under State aid rules before bidding closed, focuses on supporting highly flexible biomass units through incentives that can adjust output in line with electricity market signals. For biomass, the tendered capacity was 813 MW. A total of 807 bids amounting to 940 MW were received. Out of these, 692 bids were selected, including 33 awards totalling 63 MW for new plants and 659 awards totalling 752 MW for existing plants, while 87 bids were excluded from the process.
The successful bid prices for biomass ranged between €0.11 per kWh and €0.1948 per kWh. The volume-weighted mean tariff was €0.1811 per kWh, which remained below the price ceiling of €0.1943 per kWh for existing facilities. Bavaria secured the largest share of awarded capacity, securing 276 MW from 266 bids. This was followed by Lower Saxony with an awarded capacity of 143 MW from 122 bids, and North Rhine-Westphalia with an awarded capacity of 94 MW from 63 bids.
The auction for solar installations on buildings and noise barriers received 140 bids totalling 310 MW against the tendered capacity of 283 MW. After excluding 19 bids amounting to 29 MW, a total of 121 bids amounting to a capacity of 281 MW were accepted, resulting in a slightly undersubscribed round. The successful bid prices in this pay-as-bid auction ranged from €0.0828 per kWh to €0.1040 per kWh. The volume-weighted average stood at €0.0966 per kWh, higher than the previous round’s €0.0922 per kWh but below the €0.1040 per kWh ceiling. Bavaria secured the largest share of awarded capacity at 59 MW from 19 bids, followed by North Rhine-Westphalia securing a capacity of 57 MW from 29 bids, Brandenburg securing a capacity of 32 MW from 12 bids, and Baden-Württemberg securing a capacity of 31 MW from 9 bids.
