Local government delivers sustainability - near zero energy buildings and waste energy makes city of Lund sustainable

Panel: 2. Current energy efficiency policies: On stage and backstage

This is a peer-reviewed paper.

Authors:
Agneta Persson, eceee President, Sweden
Ola Larsson, WSP Environmental, Sweden
Mats Didriksson, Lunds Energikoncerner, Sweden

Abstract

One of Europe’s most advanced and exciting scientific projects, the European Spallation Source (ESS), will be built outside Lund in Sweden. A new city district called Brunnshög will be developed in the area surrounding the new science park. The vision for this new city district, with more than 10 000 inhabitants and 15 000 work spaces, is outstanding sustainable city development from ecological, economical as well as social perspectives.

Sustainable energy solutions are necessary to achieve this goal. A low energy end use combined with renewable energy sources will lead to a sustainable energy system. ESS will generate a substantial amount of waste heat, estimates point at 240 GWh/year. This waste heat can be used for district heating, sorptive cooling, appliances and electricity production.

The local energy utility (Lunds Energi) aims to be a driving force towards sustainability. Their efforts to create sustainable solutions for Brunnshög started with an analysis of 3 different scenarios of the new city district’s energy demand. These scenarios include levels from medium to very high ambitions. This analysis was followed by an analysis of possible renewable energy scenarios. This included not only waste heat from ESS and a new bio fuelled CHP plant, but also small and large scale wind power, solar energy (thermal and photovoltaic), small scale biogas production and geothermal energy for storing waste heat from ESS and creating free cooling.

Different measures to further decrease both end use and primary energy and reduce the carbon footprint have also been analysed. Sustainable energy systems also need to take dynamics of consumption and lifestyle measures into consideration. Active cooperation between different actor categories is essential for a sustainable society. This paper describes how Lunds Energi combines all above mentioned options in their effort to create the most sustainable solution for Brunnshög, the city of Lund and the region of Skåne.