# Blykalla

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

- Industry: Power & Utilities
- Headquarters: Stockholm, Sweden
- Website: www.blykalla.com/
- Total disclosed funding: $7.5M
- Latest round: Series A (Apr 8, 2024)
- Investors on record: 4

## About

Based in Sweden, Blykalla AB, formerly known as LeadCold, operates as a power generation equipment manufacturing company that produces advanced small modular reactors (SMRs) for industrial clients. Based in Stockholm, Sweden, and founded in 2013 by co-founders Janne Wallenius, Peter Szakalos, and Jesper Ejenstam, Blykalla AB, formerly known as LeadCold, operates as a power and utility company that designs and develops lead-cooled small modular reactors (SMRs) for carbon-free baseload power supply. As of 2024, the company is led by its CEO, Jacob Stedman. In December 2025, Blykalla AB raised USD 50 million in venture funding from Norrsken VC,  Oklo Inc., Armada Investment Group, KDDI, August One, GK Goh Ventures, Pitango, Nucleation Capital, and Earth Venture Capital. The company provides a range of nuclear technology solutions, including advanced small modular reactors (SMRs), such as the Swedish Advanced Lead Reactor (SEALER), to provide clean, reliable, and scalable baseload energy that is used for electricity, heating, and industrial processes. Additionally, the firm has created a patented aluminum alloy steel for corrosion resistance in lead-cooled reactors. Blykalla generates revenue through licensing its SMR reactor technology, reactor system deliveries, long-term service agreements, and engineering support for energy companies seeking decentralized, baseload nuclear power solutions. The company plans to utilize the December 2025 funding to speed up the development and market launch of their advanced lead-cooled reactor.

## Funding rounds

- Series A, Apr 8, 2024, $7.5M — Norrsken VC, Earth Venture Capital, Farvatn Capital, Nucleation Capital

## Investors

- Norrsken VC (https://capitalatlas.ai/funds/norrsken-vc) — Series A
- Earth Venture Capital (https://capitalatlas.ai/funds/earth-venture-capital) — Series A
- Farvatn Capital — Series A
- Nucleation Capital (https://capitalatlas.ai/funds/nucleation-capital) — Series A