Energy systems analyses are integrated elements in planning the transition towards
renewable energy-based energy systems. This is due to a growing complexity arising from …

This review article presents a description of contemporary developments and findings
related to the different elements needed in future 4th generation district heating systems …

In the last decade, pit thermal energy storage (PTES) systems have been used as a large-
scale heat storage solution in district heating systems due to their low specific investment …

Germany has set ambitious policies for increasing renewable energy shares and
decommissioning nuclear energy, but there are certain scientific gaps on how this transition …

This article shows that research in the design of 100% renewable energy systems in
scientific articles is fairly new but has gained increasing attention in recent years. In total …

It is often highlighted how the transition to renewable energy supply calls for significant
electricity storage. However, one has to move beyond the electricity-only focus and take a …

Thermal district networks are effective solutions to substitute fossil fuels with renewable
energy sources for heating and cooling. Moreover, thermal networking of buildings allows …

The integration of significant shares of renewable energies poses remarkable issues related
to the intermittent nature of these sources. Nonetheless, solutions in support of renewables …

European Union (EU) legislation is increasingly embracing the energy efficiency first (EE1st)
principle. This principle seeks to prioritise energy efficiency measures whenever these …

District energy systems are about to shift towards closer temperature configurations, ie low-
temperature district heating and high-temperature district cooling. Challenges and benefits …