At the new Eisenbahnweg development in Basel-Hirzbrunnen, ECCO2 demonstrated that even well-insulated buildings can have untapped efficiency potential.
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References
Institutional owners working with ECCO2.
Pension funds, real estate funds and insurers optimize their portfolios with ECCO2.
> 27%
Heating energy saved
185
Rental apartments
2023
Building completion
<3 yrs.
Investment payback
⅔
Customer portfolio already using ECCO2
Customer case · Basel
Eisenbahnweg Basel: up to 27% less heating energy in a new residential development
“Up to a 27% reduction at the Eisenbahnweg residential development – this and other successful pilot projects prompted us to roll out the solution to additional developments. The solution is now already in use across two-thirds of our entire portfolio.”
Frank Dietler
6
residential buildings in the pilot
>20 %
less energy & emissions · season 1
76 t
CO₂ avoided
CASE 01 · Pilot heating season 2024/25
Residential real estate fund of one of Switzerland’s largest institutional real estate investors: more than 20 percent savings in the pilot.
A residential real estate fund of one of Switzerland’s largest institutional real estate investors reduced energy and emissions by more than 20 percent in a pilot on six buildings – without any loss of comfort for the tenants.
“Our greatest success is the rapid and significant reduction of consumption and emissions with a minimal investment compared to an energy-related refurbishment.”
Fund Manager
Entire
building portfolio
15 %
savings target for heating consumption
FOEN
certified savings
2022
decision during the energy price shock
CASE 02 · Decision 2022, rollout 2023
Groupe Mutuel: throttling the heating, controlled and optimized with Swiss artificial intelligence.
Following the 2022 energy price shock, Groupe Mutuel had its entire building portfolio equipped with ECCO2: throttling the heating, fact-based instead of on suspicion – with FOEN-certified savings.
“Wanting to lower heating settings without factual information about the starting position and the consequences is simply a utopia. We need to know with reasonable precision what we are doing, out of consideration for the tenants and to avoid serious, costly mistakes.”
Ulrich-Yvan Imboden, Head of Building Technology, Groupe Mutuel (translated from the original French release)
−850 t
CO₂ per year
~110
buildings in the rollout
Pilot → rollout
after confirmed success
CASE 03 · Portfolio rollout since 2023
A portfolio managed by SFP: 850 tons less CO₂ per year, without a single heating replacement.
A portfolio managed by SFP saves around 850 tons of CO₂ per year – across around 110 buildings, with the existing heating systems, controlled more precisely instead of replaced.
102
properties
~200'000 m²
portfolio area
−20,3 %
heating energy · year 1
410 t
CO₂ avoided
CASE 04 · implemented 2023/24
Swiss Finance & Property: 20 % less heating energy in one year.
Swiss Finance & Property optimized 102 properties across Switzerland and achieved 20,3 percent less heating energy and 410 tons less CO₂ in the first year.
63
properties
>120'000 m²
portfolio area
1'496
installed sensors
70 %
of the portfolio with measurable savings in the first partial season
Directly
lower ancillary costs for tenants
CASE 05 · implemented, as of March 2025
Cité Derrière, Lausanne: the data basis for phasing out fossil fuels.
For phasing out fossil fuels, 1'496 sensors in 63 properties of the Cité Derrière cooperative provide the data basis – 70 percent of the portfolio already shows measurable savings.
“With ECCO2 we optimize the energy management of our portfolio and identify potential for improvement quickly.”
Joël Cornuz, President Cité Derrière (translated from the original release)
>40'800 m²
pilot area
Ø 11 %
energy savings in the pilot
⅓
of the buildings above 15 %
>2×
expansion after the pilot
CASE 06 · Pilot since the end of 2024, expansion since 2025
Cronos Finance: measure first, then scale.
Cronos Finance measured first: 11 percent savings in the pilot on more than 40'800 m², one third of the buildings above 15 percent – then came more than a doubling.
“After the success of the pilot deployment, we decided to extend the solution to around thirty further buildings in the portfolio of the Cronos Immo Fund. It is an integral part of our strategy to reduce the CO₂ footprint of our real estate portfolio.”
Olivier Juillard, Head of Asset Management, Cronos Finance (translated from the original release)
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