# GDI

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/gdi

- Industry: Energy Storage & Batteries
- Headquarters: Rochester, US
- Website: www.gdinrg.com
- Total disclosed funding: $17M
- Latest round: Series A (Mar 29, 2025)
- Investors on record: 4

## About

Founded in 2009 and headquartered in Williamsville, US, Graphenix Development, Inc. focuses on manufacturing silicon anodes for lithium-ion batteries. The company was founded by Rob Anstey (CEO). In April 2026, Graphenix Development, Inc. raised USD 15 million in venture funding from W. L. Gore & Associates, Impact NY, NOM, Helios Climate Ventures, and InnoEnergy.

Graphenix Development, Inc. specializes in the development and manufacturing of advanced silicon anodes designed to enhance the performance of lithium-ion batteries. Their core product offering includes 100% silicon anodes which enable faster charging times, increased energy density, and improved safety in battery applications. These anodes are engineered to be compatible with various lithium battery architectures, facilitating seamless integration into existing high-volume battery production lines. GDI’s technology addresses the challenges of range anxiety in electric vehicles and other portable electronic devices, collaborating with product manufacturers and battery developers across multiple industries, primarily in North America and Europe where sustainable energy solutions are increasingly sought after.

Graphenix Development, Inc. generates revenue through direct partnerships with battery manufacturers and product developers, facilitating the integration of their silicon anode technology into commercial battery designs. The revenue model primarily revolves around B2B transactions, where clients procure silicon anodes for their production processes, enabling them to leverage GDI's innovative technology to create higher-performing batteries. GDI structures transactions based on volume commitments and long-term supply agreements, ensuring a steady flow of product. Their flagship silicon anodes are competitively priced to meet the demands of high-volume production, positioning GDI favorably within the battery manufacturing sector.

The company will use the March 2026 funding to accelerate the commercialization of GDI's patented 100% silicon anode technology by supporting the installation and ramp-up of initial megawatt-scale production lines in the United States and Germany. The capital will fund product qualification and launch efforts across defense, medical technology, consumer electronics, and future e-mobility applications. The investment also supports scaling manufacturing capacity, advancing commercialization, leveraging existing US and EU supply chains, and strengthening GDI's position in next-generation lithium-ion battery materials through its differentiated technology and extensive intellectual property portfolio.

## Funding rounds

- Series A, Mar 29, 2025, $2.4M — InnoEnergy, Helios Climate Ventures
- Series A, Sep 21, 2022, $13M — InnoEnergy, Helios Climate Ventures
- Seed, Jan 27, 2016, $1.5M — Excel Capital Partners, Buffalo Angels

## Investors

- Excel Capital Partners (https://capitalatlas.ai/funds/excel-capital-partners) — Seed
- Buffalo Angels — Seed
- InnoEnergy (https://capitalatlas.ai/funds/innoenergy) — Series A
- Helios Climate Ventures (https://capitalatlas.ai/funds/helios-climate-ventures) — Series A