Booth No. A077-13
Company Introduction
GRAMM Co., Ltd. is a Korean renewable energy technology company specializing in Rim-Driven Small Hydropower Systems and Permanent Magnet Generator (PMG) technology. Established in 2021, the company develops innovative distributed energy solutions that convert unused water energy into clean electricity, contributing to carbon reduction and energy efficiency.
Our flagship Rim-Driven Small Hydropower Generator is designed for direct installation inside existing pipelines without requiring large-scale civil engineering work. The shaft-free, hubless structure minimizes maintenance, prevents debris clogging, and delivers high efficiency with a compact design. The technology is suitable for water supply networks, wastewater treatment plants, industrial water pipelines, aquaculture facilities, and building water systems.
Recognized for its technological innovation, GRAMM has been designated as an Innovative Procurement Product by the Korean Public Procurement Service (PPS) and has secured multiple patents and certifications. The company is actively expanding its global partnerships to deliver sustainable and practical hydropower solutions worldwide.
Our flagship Rim-Driven Small Hydropower Generator is designed for direct installation inside existing pipelines without requiring large-scale civil engineering work. The shaft-free, hubless structure minimizes maintenance, prevents debris clogging, and delivers high efficiency with a compact design. The technology is suitable for water supply networks, wastewater treatment plants, industrial water pipelines, aquaculture facilities, and building water systems.
Recognized for its technological innovation, GRAMM has been designated as an Innovative Procurement Product by the Korean Public Procurement Service (PPS) and has secured multiple patents and certifications. The company is actively expanding its global partnerships to deliver sustainable and practical hydropower solutions worldwide.
Main Products & Services
This product is a direct-installation **Rim-Driven Small Hydropower Generator** designed for existing pipelines in water and wastewater systems, aquaculture facilities, factories, and cooling towers without additional civil engineering work. It generates renewable electricity by utilizing water flow and head, enabling on-site power consumption or grid sales while reducing electricity costs and carbon emissions.
The system incorporates Korean Patent No. 10-2508134, **"Rim-Driven Small Hydropower Generator."** Its shaft-less design integrates the turbine blades directly with the rotor, eliminating mechanical transmission losses and improving efficiency. The shaft-less structure prevents debris blockage, while optimized blade geometry delivers higher output than conventional products of the same size. SUS316 stainless steel and high-strength powder coating provide excellent corrosion resistance and durability, allowing fast installation in existing pipelines.
Waterproof epoxy molding protects the stator and permanent magnets from insulation failure, and a direct water-cooling system ensures stable long-term operation. IoT-based monitoring enables real-time management of flow rate, rotational speed, and power generation.
The technology supports carbon neutrality, renewable energy policies, RE100, and ESG initiatives. It is suitable for public infrastructure, including water treatment and irrigation facilities, reducing operating costs, providing reliable distributed power, improving emergency energy resilience, and contributing to sustainable carbon reduction.
The system incorporates Korean Patent No. 10-2508134, **"Rim-Driven Small Hydropower Generator."** Its shaft-less design integrates the turbine blades directly with the rotor, eliminating mechanical transmission losses and improving efficiency. The shaft-less structure prevents debris blockage, while optimized blade geometry delivers higher output than conventional products of the same size. SUS316 stainless steel and high-strength powder coating provide excellent corrosion resistance and durability, allowing fast installation in existing pipelines.
Waterproof epoxy molding protects the stator and permanent magnets from insulation failure, and a direct water-cooling system ensures stable long-term operation. IoT-based monitoring enables real-time management of flow rate, rotational speed, and power generation.
The technology supports carbon neutrality, renewable energy policies, RE100, and ESG initiatives. It is suitable for public infrastructure, including water treatment and irrigation facilities, reducing operating costs, providing reliable distributed power, improving emergency energy resilience, and contributing to sustainable carbon reduction.
Attachment
- GRAMM_Caltalog_Eng.pptx ( 19,509,080 bytes )
