Societal benefits of Ultra Low Temperature (ULT) exchange networks

The study compares very low-temperature (exchange) networks (ZLT-U) with four other fossil-free heating and cooling technologies, considering both direct impacts (costs, energy use, investments) and societal impacts (public health, livelihood security, spatial use, and social cohesion). The analysis was carried out for four representative Dutch neighbourhood types and supplemented with three future scenarios exploring key uncertainties in demand, resources, and policy.

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Conclusions

• ZLT-U represents a promising fourth pathway that combines collective reliability with individual flexibility;
• Societal impacts are decisive in situations where direct costs are comparable. ZLT-U performs better than alternatives across several societal dimensions;
• Future resilience is a key added value: ZLT-U can adapt to declining heat demand, rising cooling demand, volatile electricity prices, and changing resource strategies;
• Collective systems remain more inclusive than fully individual solutions and structurally limit the need for grid reinforcement.

The study was conducted by CE Delft, ToRealizeConcepts, and Tri-Es Consultancy.