3E

Their core work

3E is a Brussels-based energy consultancy and technology SME specializing in solar PV performance, smart energy systems, and building energy optimization. They provide data-driven services for renewable energy asset management, grid integration, and digital tools for energy-efficient buildings. Their work spans from PV bankability and resource assessment to interoperability solutions connecting smart homes, buildings, and grids — bridging the gap between energy engineering and digital infrastructure.

What they specialise in

How they've shifted over time

In 2015–2018, 3E focused on energy market fundamentals: renewable energy aggregation, electricity balancing, PV financing, and municipal climate finance mechanisms (Covenant of Mayors, revolving funds, project bundling). From 2019 onward, their work shifted decisively toward digitalization and smart integration — digital twins for PV plants, interoperability standards for smart buildings and grids, and engineering of digitalization solutions. The trend shows a company moving from energy policy and market consulting toward becoming a technology-driven energy data company.

3E is transitioning from energy consultancy toward digital energy intelligence, with increasing emphasis on digital twins, interoperability, and data-driven asset management — making them a strong partner for projects at the energy-digital intersection.

How they like to work

3E operates primarily as an active partner (11 of 14 projects), but has demonstrated coordination capability in two significant projects (SQ Building at EUR 1.75M and WindSider at EUR 902K). With 287 unique consortium partners across 26 countries, they are a well-connected hub rather than a repeat-partner organization. This broad network and willingness to both lead and contribute makes them a flexible, low-risk consortium partner.

3E has collaborated with 287 unique partners across 26 countries, indicating a deep and diverse European network. Their Brussels base and energy-digital focus connect them to both Western European utilities and pan-European research consortia.

What sets them apart

3E sits at a rare intersection: they combine deep energy domain expertise (PV, wind, buildings) with growing digital capabilities (IoT interoperability, digital twins, data analytics). As a Belgian SME, they are small enough to be agile and hands-on, yet experienced enough to coordinate million-euro projects. Their ability to translate between energy engineering, market design, and digital infrastructure makes them particularly valuable for cross-domain projects.

Highlights from their portfolio

• SQ Building
  Largest single EC contribution (EUR 1.75M) and coordinator role — demonstrates 3E's capacity to lead ambitious building energy projects.
• InterConnect
  Large-scale interoperability project (EUR 655K to 3E) connecting smart homes, buildings, and grids — represents their digital pivot and future direction.
• WindSider
  Coordinated commercialization of wind assessment technology (EUR 902K), showing 3E can bring research to market, not just participate in studies.