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Dalsia infographic: average heating energy consumption down 8.9% and average seasonal bill down 3.9%

Dalsia Energy Report 2025/2026: How Data Helps Us Understand and Manage Heating Consumption

PUBLISHED ON October 15, 2026

Average heating consumption decreased by 8.9%, while the weighted average seasonal heating bill fell by 3.9%, according to Dalsia’s analysis of 127,810 customers.

Colleagues joining hands as a sign of partnership

Elveko and Toplocontrol Are Now Dalsia

We are uniting teams, expertise, and processes under the Dalsia brand to offer you a stronger portfolio and even better service.

Young couple sitting in front of a radiator warming their hands

How Much Heating Cost During the 2024/2025 Season in Five Bulgarian Cities

Dalsia presents summarized data from the balancing statements of its customers for the 2024/2025 heating season in Sofia, Plovdiv, Razgrad, Kozloduy, and Pleven. The comparative information includes annual heat-energy expenses, local price differences, heated residential volume, and household behavior.

Team meeting around a table in a bright office

Trademark Dalsia

Dalsia OOD is the new trade name that replaced Brunata OOD. The change reflects the natural evolution of the company as a leader in heat accounting and a manufacturer of comprehensive, intelligent energy solutions for heating, cooling and consumption management.

Adam Marvakov, Production Director at Dalsia, in the workshop

Conversation with Production Director Adam Marvakov

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