Economic incentives for flexible district heating in the Nordic countries

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Daniel Møller Sneum
http://orcid.org/0000-0003-2789-2910
Eli Sandberg
http://orcid.org/0000-0002-2371-516X

Abstract

By analysing four types of district heating plants, ranging from fully integrated with an electricity system (combined heat and power and electric boiler) to no integration with an electricity system (wood chip boiler), operation and investment incentives for flexible district heating plants under current Danish, Finnish, Norwegian and Swedish framework conditions have been investigated. Hourly-based operation optimisation over 20 years using the modelling software energyPRO showed that the largest investment incentive in Finland, Norway and Sweden was for combined heat and power with an electric boiler. This is largely driven by subsidies. Conversely, the less-subsidised Danish case incentivised investment in wood chip boilers. Untaxed biomass is the major energy source in all scenarios, while electricity use is limited. Capacity component-based tariffs can eliminate operation of electric boilers, while less costly energy component-based tariffs can increase the operation of electric boilers. Heat storage was found to be a no-regrets solution for optimising operation and lowering costs in all cases.

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Author Biographies

Daniel Møller Sneum, Technical University of Denmark

PhD fellow

Eli Sandberg, Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences

PhD fellow