The business model for the refurbishment is to lower the energy and maintenance cost of the building. Low-energy retrofittings like the one done at Valla Torg are expected be part of an attractive market in the future due to the low energy consumption and carbon footprint of the building.

Lessons learnt

In order to have the biggest impact of the energy renovation and to avoid barriers with tenants engagement and/or data privacy, energy measures at building level instead of the dwelling level are a good alternative. In this way, energy savings can be more easily quantified for the building owner. Information campaigns on being a climate-active-tenant by Stockholmshem also helped to get acceptance.

The main obstacle in this retrofitting was the tight schedule set for the project by both building owners and project managers. This is due to the fact that unforeseen obstacles often occur in large retrofitting projects. In this case, moisture and mould were found in apartments and more staff than planned were added to keep the schedule.

Upscaling & replication potential

In terms of replication, energy savings of 60% is an ambitious target and the last 10-15% of savings are very costly.