Castellum

Castellum, a Swedish real estate services company, has committed to ambitious climate goals. In 2025, Castellum reported total emissions of approximately 63.88 million kg CO2e. This included Scope 1 emissions of around 656,000 kg CO2e, Scope 2 market-based emissions of approximately 5.19 million kg CO2e (or 18.25 million kg CO2e location-based), and Scope 3 emissions of roughly 58.04 million kg CO2e. Key contributors to Scope 3 emissions were purchased goods and services (approximately 36.19 million kg CO2e) and fuel and energy-related activities (around 8.08 million kg CO2e).

Looking back, Castellum's total emissions in 2024 were approximately 57.05 million kg CO2e, with Scope 1 at about 639,000 kg CO2e, Scope 2 market-based at around 4.95 million kg CO2e (or 20.52 million kg CO2e location-based), and Scope 3 at roughly 51.47 million kg CO2e. In 2023, total emissions stood at approximately 76.24 million kg CO2e, comprising Scope 1 emissions of about 384,000 kg CO2e, Scope 2 market-based emissions of roughly 10.26 million kg CO2e (or 21.72 million kg CO2e location-based), and Scope 3 emissions of around 65.60 million kg CO2e.

Castellum has set several near-term and long-term climate commitments validated by the Science Based Targets initiative (SBTi). The company commits to reducing absolute Scope 1, 2, and 3 GHG emissions by 100% by 2030, using a 2017 base year. Furthermore, Castellum aims to achieve net-zero greenhouse gas emissions across its value chain by 2040. This includes reducing Scope 1, 2, and 3 in-use operational GHG emissions of owned and leased buildings (covering downstream leased assets) by 46% per square metre by 2030, from a 2023 base year. They also plan to reduce upfront embodied Scope 3 GHG emissions of new buildings (capital goods) by 45.4% per square metre by 2030 and Scope 3 GHG emissions from purchased goods and services by 51.6% per square metre within the same timeframe. By 2040, Castellum targets a 77.9% reduction in Scope 1, 2, and 3 in-use operational GHG emissions per square metre, a 96.6% reduction in upfront embodied Scope 3 GHG emissions of new buildings per square metre, and a 97% reduction in all other Scope 3 GHG emissions per square metre. They also commit to installing no new fossil fuel equipment in their property portfolio from May 1, 2025.