SOLARSPRING GMBH

Their core work

Solarspring GmbH is a German technology SME based in Freiburg im Breisgau specializing in solar-driven membrane processes for water treatment and purification. Their core business sits at the intersection of solar thermal energy and advanced membrane technology — applying renewable heat to drive filtration, desalination, and resource recovery from water streams. In both EU projects they participated in, they contributed technology for recovering valuable materials from wastewater (including bioplastics, organic acids, and clean irrigation water) while minimizing energy consumption. Their positioning as a Freiburg-based SME places them in one of Europe's most active solar-technology clusters, reinforcing their applied focus on energy-efficient water solutions.

What they specialise in

How they've shifted over time

Both H2020 projects ran simultaneously from 2016 to 2019, which means there is no meaningful chronological shift to observe — Solarspring's entire EU-funded portfolio falls within a single three-year window. What the project data does show is a consistent dual focus: one project (INCOVER) covering the full chain from wastewater intake through biological recovery and decision support, and the other (ReWaCEM) targeting industrial wastewater specifically via cutting-edge membrane separation. There is no evidence of evolution within the H2020 period, and without post-2019 project data it is not possible to assess whether their focus has since shifted — that limitation should be noted by anyone using this profile for prospecting.

Based on limited data, Solarspring appears to be deepening its position in industrial and municipal wastewater treatment using membrane technologies, but the absence of projects beyond 2019 makes it unclear whether they have grown, pivoted, or pulled back from EU-funded research.

How they like to work

Solarspring has participated exclusively as a consortium partner — never as a project coordinator — across both recorded projects. They join large consortia (34 unique partners across 9 countries from just 2 projects), which suggests they are brought in as a specialist technology contributor rather than a project orchestrator. This pattern is typical of SMEs that provide a well-defined technical component — in their case, likely solar membrane modules or process know-how — while larger academic or industrial partners lead the coordination.

Solarspring has built a surprisingly broad network for a two-project SME — 34 unique partners across 9 countries, pointing to participation in large, multi-partner Innovation Action consortia. Their European reach suggests comfort working in diverse, multinational project teams.

What sets them apart

Solarspring occupies a rare niche as a private SME applying solar thermal processes to membrane water treatment — an intersection where few commercial companies operate at the EU project level. Their Freiburg base places them within the Fraunhofer ISE ecosystem, the continent's leading solar energy research institute, which likely shapes both their technical capabilities and their partnership network. For consortium builders, they offer a commercially minded SME perspective on solar-driven water treatment that complements academic research partners.

Highlights from their portfolio

• INCOVER
  The broadest project in their portfolio — covering biological resource recovery (PHA, organic acids), anaerobic digestion, irrigation water reuse, optical sensing, and decision support systems within a single near-zero-energy wastewater plant concept.
• ReWaCEM
  Focused on industrial wastewater specifically and carried the largest EC contribution (EUR 273,149), signaling Solarspring's role as a meaningful membrane technology contributor rather than a minor subcontractor.