3SI
Smart Sustainable Social Innovations IKE
Athens, Greece
About
3SI is a private company headquartered in Athens, Greece specializing in Energy Storage, Other.
3SI is a research and consulting organisation focused on smart, sustainable energy innovation. It participates in Horizon Europe and other EU-funded projects on seasonal thermal energy storage, district heating, digital twins, zero-emission buildings, smart grids and substation digitalisation. It also provides socioeconomic impact analysis, business model development and power system studies for renewables and energy efficiency projects.
Headquarters
Company type
Focus areas
Products & services
Business models
Value chain
Service areas (2)
Socioeconomic and business model advisory
Socioeconomic impact analysis, sustainable business model development and energy market, regulatory and environmental impact assessment for energy sector stakeholders.
Power system and energy efficiency studies
Power system studies for renewables and energy efficiency projects, smart grid and low-carbon technology strategy design.
Locations
Headquarters
Dimitriou Gounari 96, 15125, Athens, Greece
Projects
6USES4HEAT
Demonstrates two large-scale seasonal underground thermal energy storage units connected to district heating networks, plus related heating technologies. Runs December 2023 to November 2027 with over 9.7 million euros in EU funding.
THUNDER
Develops seasonal thermal storage based on thermochemical materials for recovering waste heat from data centres, validated at a demo site in Bulgaria.
ZEBAI
Develops AI-enhanced methodologies for designing and constructing zero-emission buildings, testing four demonstrators.
TwinEU
Develops pan-European digital twin concepts and standard interfaces for the energy system.
ESTELAR
Modernises traditional electrical substations through virtualisation and digitalisation, running from 2025 to 2027 with 2.5 million euros in EU funding.
HYNET
Pan-European interoperable AC-DC hybrid electricity network project supporting grid management and energy transition.
Credentials & affiliations
Partnerships
KTH Royal Institute of Technology, RINA-C, Delft University of Technology
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