Unlocking the energy of rivers for everyone
SPEARhydro is a first-of-its-kind floating hydro power plant that provides clean and stable electricity by harnessing the natural flow of rivers. We revolutionize the utilization of rivers by enabling sustainable energy production directly in cities and urban areas. By providing old floating structures with SPEARhydro ad-on and deploying new SPEARhydro modules, we aim to create a paradigm shift in how rivers are utilized.
TECHNOLOGY
Unlike the traditional turbine-based solution, SPEARhydro harnesses the river energy by using an internationally patented pendulum movement of fins located beneath a waterway- capable vessel. The slow-moving, durable fins propelled by a river stream are connected to standard generators that produce electricity. Unlike common propellers and turbines, fins don’t clog, can withstand debris, and are safe for wildlife. These unique characteristics allow long-term deployment in free flow environments that was not possible until now.
The anchored power plant can be plugged into a local grid network or can be used as an off-grid or hybrid solution for own electricity demand. SPEARhydro's modular technology offers versatility for urban areas with high energy demand.
Our technology is embedded in a transportable, plug & play device that doesn’t require large supporting infrastructure and can be deployed on any navigable river. With a targeted capacity factor higher than 80%, SPEARhydro strives for maximum efficiency. It can be customized and scaled up for various applications and use cases.
International patent application WIPO PCT WO2017082832A1 was published on May 18, 2017 with the US patent application approved on May 26, 2020 and EU patent application approved on June 7, 2023.
SPEAR 1:4 Prototype tested on the Danube and in the laboratory environment
Applications
REAL ESTATES POWERED BY SPEAR HYDRO
Our solution offers a unique power source for riverside buildings and urban areas. In addition to power generation, our platform also provides an adaptive deck space which can be utilized for commercial and marketing purposes, or further photovoltaic power generation. Our solution addresses the lack of available 24/7 renewable energy sources suitable for urban areas, offering the long-awaited missing link for developers.
PORT OPERATORS, VESSEL AND DECK OWNERS POWERED BY SPEAR HYDRO
Our platform is capable of powering pontoons, barges, or onshore utilities and services with clean electricity. SPEARhydro offers a unique solution for floating assets that have limited ability to use other renewable energy sources such as solar or wind. The ecological nano-coating used on our platform reduces the need for maintenance and ensures a longer lifespan, addressing the frustration of periodic maintenance and environmentally harmful hull coatings. In addition to electricity production, SPEARhydro AGIS ad-on can serve as a terminal for small boats, leisure, and recreation. Ideal also for private customers with boats or marinas.
Partners
Municipal partner interested in our Smart City solution
Real estate developer ready to deploy SPEAR as part of the RiverPark II landmark project
Advisory partner for grants and financing
Public port operator interested utilizing SPEAR for electrified berthing space.
“Bratislava considers SPEAR Technology to be a promising smart urban innovation that may have a positive technological, social, and environmental impact on the future of our city.”
Tatiana Kratochvíľová
Deputy Mayor of Bratislava – the Capital City of the Slovak Republic, EU
Project SPEARhydro - harnessing the energy of rivers for everyone
SPEARhydro project, focused on research and development of the technology was financed by the European Union NextGenerationEU from the Recovery and Resilience Plan of the Slovak Republic. The project, realized between April 1st, 2025 - March 31st, 2026 aimed to conduct extensive CFD simulations, mechanical and analytical computations, protyping and development of research SPEARhydro modules, development of the ARCUS platform alongside development of a linear generator and energy management system to operate and analyze the output of the SPEARhydro power generation. Archee, s.r.o. is grateful for the support and funding received by the Slovak Ministry of Economy from the Reocery and Resilience Plan and the NextGenerationEU programme, which helped us bring our technology closer to adoption and market uptake in order to decrease the reliance on fossil fuels and decarbonize our economy.
R&D Partners
SAV
Slovak Academy of Sciences
Electronics & Generators
MULTI
Engineering
Vessel Design and Hull Optimization
SAM Shipbuilding & Machinery
Shipbuilding, Heavy Construction
CFD Simulations, Power Output Physics
Hahn-Schickard
INL
Hydrophobic & Biofouling Nanocoating development
 IMG_1118 |  IMG_3355 |  IMG_3324 |
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 20260428_115951 |  IMG_3359 |  IMG_3344 |
 IMG_1601 |  SPEARhydro prototype on Danube |  SPEARhydro prototype on Danube |
 Our team measuring power output |  SPEARhydro team |  SPEAR hydro team photoshoot |
 SPEARhydro at the Dubai EXPO |  SPEARhydro meeting with international investors |  SPEARhydro team at the shipyard |
 FTRNW 2019 startup awards conference |  NCD 21: Slovak Design Award in New Horizons |  Martin Sichman during interview in the Morning News, RTVS |
 SPEAR hydro Prototype 1:4 on the River Danube |
Get in Touch
Archee, Ltd.
Nová Cvernovka
Račianska 78
831 02 Bratislava
Slovakia
+421 903 860 662
