Focus area: energy efficiency

Geothermal conversion in Helsinki

Slättö has executed a conversion from district heating to geothermal energy in two old-stock residential apartment buildings in Helsinki, improving energy efficiency and reducing energy costs. CO₂ emissions for building heating were reduced by 87%.

PV solar panels were installed to power the geothermal heat pump, reducing reliance on external energy sources and strengthening the assets' sustainability profile and long-term operational resilience. The assets now benefit from reduced reliance on external energy supply, lower operating costs and stronger long-term resilience.

Key results

Energy performance uplift in greater Stockholm

Slättö acquired this newly built residential asset in Q4 2024. Already during due diligence, we saw an opportunity to improve the energy class and lower opex costs. We carried out a detailed energy analysis and identified the optimal set of improvements for the asset.

We have now completed the energy capex investment, which consists of a smart, energy-efficient heating solution combined with advanced building automation, resulting in an energy class uplift from C to B. 

Solar panels have been implemented, providing on-site renewable electricity. We installed sub-metering, enabling tenant debiting and reduced energy costs.

Key results

AI-optimised residential heating in Uppsala

Slättö carried out a case study of AI-driven heating optimisation in a newly built residential asset in Uppsala. As a result, we  reduced the asset's heating energy consumption by 13%. The investment delivered a YoC above 30%, confirming a profitable energy efficiency measure. 

The AI system optimises the building’s heat curve in real time using apartment-level data, creating a more stable indoor climate. During the six-month case study, the system made close to 100 adjustments, lowering the average heat curve by up to 9°C while maintaining tenant comfort. 

Key results

Energy performance uplift in Halmstad

Slättö acquired this logistics asset in Q4 2020, identifying clear potential to improve energy efficiency and reduce operating costs. A focused upgrade program was implemented, including heating optimisation and ventilation upgrades, alongside an energy-efficient water heater, LED lighting and rooftop solar.

These measures improved system performance, reduced energy consumption and costs, and enabled on-site renewable energy generation. Results included ~SEK 240k NOI uplift, energy class improvement from E to A, 25% lower energy costs and an 8% increase in tenant satisfaction.

Key results

Energy performance uplift in Gothenburg

Slättö acquired this old-stock light industrial asset in Q2 2023 with a clear value-creation plan focused on improving its low energy rating through a structured brown-to-green transition. As part of the upgrade, gas boilers were replaced with air-to-water heat pumps, alongside the installation of a heat recovery ventilation system and rooftop solar, resulting in a reclassification of the asset to a higher energy rating.

The measures have improved energy performance and indoor climate, reduced energy costs and reliance on external energy sources, and strengthened long-term asset quality. Results included  an NOI increase of approximately SEK 100k, an upgrade in energy class from G to C, a 27% reduction in energy costs and an 8% increase in tenant satisfaction related to indoor climate.

Key results

Energy performance uplift in Norrköping

Slättö acquired this old-stock asset with a structured energy capex plan prioritised to improve its energy classification. The property has since been upgraded with high-efficiency fans, delivering approximately 50% energy savings, and insulated heating pipes, resulting in improved energy performance and lower operating costs.

The measures have strengthened the asset’s operational efficiency and reduced future capital needs. Results include an NOI increase of approximately SEK 350k, an energy class improvement, and a reduction in deferred capex in the asset.

Key results