Overview
- Techem reports 2025 was colder than 2024, pushing average heating costs higher despite lower energy prices, including a 7.8% rise in Hamburg.
- City-level differences were wide, from a 0.7% increase in Kiel to a 21% jump in Karlsruhe, which Techem attributes to varying weather conditions.
- By heating type, costs rose most for district heating (+12.4%), followed by gas (+8.9%) and electric heating (+8.3%), with heating oil up modestly (+1.6%).
- Co2online’s rule of thumb finds about a 6% cost increase per degree of colder weather, with examples such as roughly €4–€6 extra per week for a single-family home at 1°C colder and up to about €110 per week for a heat pump at −10°C.
- Energy advisers warn of larger year-end reconciliations for households that kept low prepayments and recommend lowering setpoints, using night setbacks and brief intensive airing, keeping radiators clear, adjusting monthly installments, and scrutinizing bills for weather adjustments.