€2.1m · Other round · Energy · Gröbenzell, Germany
Energyminer has closed a €2.1m funding round backed by the Companisto Business Angel Network. The financing announcement says the Gröbenzell-based company will use the capital to advance permitting and construction for its first larger river-power projects and enter additional European markets.
Turning one turbine into a fleet
Energyminer builds the Energyfish, a hydrokinetic generator that is suspended in a free-flowing river and converts the current into electricity. The system avoids a dam and the civil works used by conventional hydropower. Energyminer groups multiple units into what it calls a swarm power plant, allowing a project to add generation module by module rather than relying on one large turbine.
The company’s first commercial-scale test is at St. Goar on the Rhine. An Energyminer announcement says the approved project covers 124 Energyfish units and could supply electricity equivalent to the consumption of about 465 households. A smaller Munich pilot has already operated for several years, according to Companisto.
That modular design changes the scaling problem. Energyminer does not need to build a new dam for each site, but every deployment still depends on river conditions, ecological review, anchoring, grid connection and local permits. The next milestone is therefore not simply manufacturing more units; it is proving that those site-specific steps can be repeated across a portfolio of rivers without turning each project into a bespoke engineering exercise.
A project operator, not only a hardware vendor
Energyminer presents its offer as an end-to-end service covering installation, operation and maintenance. Its product site says the Energyfish is designed for low maintenance and largely self-cleaning operation. The company is also hiring for software that monitors and updates distributed field devices, an operational layer that becomes more important as individual river sites grow into fleets.
This makes utilisation and reliability central to the commercial model. A modular unit can lower the initial construction burden, but the economics depend on how consistently a fleet produces power, how quickly failures can be diagnosed, and how much service work is required in a demanding river environment. The St. Goar project gives Energyminer a chance to produce that evidence at a scale well beyond a pilot.
The €2.1m round funds the transition from validated technology to repeatable infrastructure delivery. If Energyminer can standardise permitting, installation and remote operations across the first projects, its addressable product becomes more than a turbine: a deployable power plant for communities and utilities with suitable river sites.
