VISBLUE AS

Their core work

VisBlue is a Danish SME that develops and commercializes redox flow battery systems for stationary energy storage. Their core product targets the gap between locally produced renewable energy (especially photovoltaics) and actual consumption patterns in buildings and grids. They bring battery chemistry and system integration expertise to EU consortia focused on renewable energy storage, building energy performance, and circular economy approaches to battery materials.

What they specialise in

How they've shifted over time

VisBlue entered H2020 in 2017 with a focused SME Instrument Phase 1 project validating the commercial potential of residential photovoltaic energy storage. By 2020-2022, their scope expanded significantly into copper-based flow battery chemistry (CUBER) and building-integrated energy systems (PROBONO), moving from pure battery technology toward whole-building and grid-level energy solutions. The trajectory shows a company growing from a single-product startup into a broader energy storage integrator with connections to construction, architecture, and sustainable neighbourhood planning.

VisBlue is expanding from standalone battery hardware toward integrated building energy systems, suggesting future collaborations will blend storage technology with smart building and grid management.

How they like to work

VisBlue operates as a technology SME that coordinates small validation projects (HomeEnergyStorage, SME Phase 1) but joins larger research and innovation consortia as a specialist partner. With 68 unique partners across 16 countries from just 3 projects, they work in large, diverse consortia — particularly in CUBER (RIA) and PROBONO (IA) which are multi-partner EU-scale efforts. This makes them an accessible partner: experienced in large consortium dynamics but small enough to be hands-on and responsive.

Despite only 3 projects, VisBlue has built a network of 68 consortium partners across 16 countries, indicating participation in large-scale European consortia with broad geographic reach well beyond Scandinavia.

What sets them apart

VisBlue sits at the intersection of flow battery chemistry and building-scale energy systems — a combination few SMEs cover. While many energy storage companies focus solely on lithium-ion or grid-scale solutions, VisBlue brings redox flow battery expertise specifically tailored to buildings and distributed renewable integration. For consortium builders, they offer a rare profile: a commercially-minded SME that can contribute both battery R&D and real-world deployment perspective in building energy projects.

Highlights from their portfolio

• CUBER
  Largest project by funding (EUR 852K to VisBlue), focused on copper-based flow batteries — a less common chemistry that signals differentiation from mainstream vanadium flow battery players.
• PROBONO
  Shows VisBlue's expansion into smart buildings and BIM-driven energy performance, connecting battery storage with architecture and sustainable neighbourhood design.
• HomeEnergyStorage
  VisBlue's only coordinator role and their SME Instrument entry point — validates their origin as a product-focused residential energy storage startup.