German heating costs projected to climb in 2026 as oil and wood pellet prices rise

Heating oil and pellet costs projected to rise in 2026

The annual Heizspiegel report published on 22 September 2026 by consulting firm co2online, the German Tenants' Association (Deutscher Mieterbund), and the Bauherren-Schutzbund indicates substantial cost increases for German households entering the winter heating season. Based on data from 67,000 residential buildings and weather records from the Deutscher Wetterdienst, heating oil and wood pellet users will face the steepest price hikes. For a standard 70-square-meter apartment in a multi-family building, annual heating oil expenses will climb by 24% to reach 1,275 euros in 2026. Wood pellet costs will increase by 17% to 870 euros per year, driven largely by shortages of raw materials linked to a slowdown in the construction industry. For single-family homes with a 100-square-meter footprint consuming an average of 1,500 liters of heating oil, a full tank at current prices of around 1.80 euros per liter will cost approximately 2,700 euros, representing an increase of about 1,300 euros compared to 2025.

Temporary relief for natural gas users

In contrast to oil and pellets, natural gas heating costs for a 70-square-meter apartment will drop by 4% to 1,120 euros in 2026. This slight decrease stems from lower wholesale procurement prices recorded at the start of the year and the complete expiration of the gas storage levy (Gasspeicherumlage) in January 2026, which previously added 0.289 cents per kilowatt-hour. District heating costs will see a 1% increase to 1,310 euros, while heat pump running costs will rise by 3% to 735 euros. Co2online analyst Alexander Steinfeldt noted that long-term price stability for district heating and heat pumps depends on transitioning energy grids to renewable sources, though required network investments will keep initial capital costs elevated. Experts caution that higher wholesale gas prices triggered by maritime disruptions linked to the conflict involving Iran could filter through to household utility bills by late 2026 or 2027 as existing price guarantee contracts expire.

Household savings potential and long-term outlook

The report estimates that approximately 90% of German households retain untapped energy-saving potential. Routine adjustments, including improved ventilation practices, temperature calibration, and reduced hot water consumption, can lower overall household energy use by up to 10%. In monetary terms, annual savings reach roughly 465 euros for a typical apartment and up to 1,000 euros for a single-family house. Long-term projections by co2online indicate that operating expenses for fossil gas and oil heating systems could more than double by 2045 due to rising carbon pricing, higher grid usage fees, and statutory blending mandates for biomethane and hydrogen.

The era of cheap fossil heating energy is over at the latest since the energy crisis four years ago.

Tenant representatives warned that the financial burden falls heavily on residents living in unrenovated housing stock.

Fossil heating systems in particular are increasingly becoming a cost risk, especially in older and energetically poor buildings.

Economic growth revisions and fiscal backdrop

The energy cost assessment coincides with upgraded macroeconomic forecasts from Germany's five leading economic research institutes (Ifo Munich, DIW Berlin, RWI Essen, IfW Kiel, and IWH Halle). Ahead of their official joint economic diagnostic scheduled for Thursday, the institutes raised Germany's 2026 gross domestic product growth forecast to 1.3%, up from the 0.6% projected in April, and lifted the 2027 forecast from 0.9% to 1.1%. Economists attribute the stronger expansion to increased state spending on defense, armaments, and infrastructure, alongside lower-than-anticipated disruption from the Middle East conflict. The institutes have advocated direct targeted financial aid for lower-income households to offset energy costs rather than broad fuel subsidies.