Draft:Cactos
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Comment: Cited sources are not mostly routine coverage of their activities and some are self published/promotional. The article is written in promotional tone. Rht bd (talk) 19:25, 11 September 2026 (UTC)
- Comment: In accordance with the Wikimedia Foundation's Terms of Use, I disclose that I have been paid by my employer for my contributions to this article. Besyj (talk) 18:38, 11 September 2026 (UTC)
| Type | Limited company |
|---|---|
| Industry | Energy storage |
| Founded | 2021 |
| Headquarters | Helsinki, Finland. Production and R&D in Kempele, Finland. |
| Revenue | 12 179 000 € (2025) |
| -130 000 € (2025) | |
| Website | cactos.com |
Cactos Oy is a Finnish energy storage company founded in 2021. The company manufactures, installs, and operates battery energy storage systems (BESS), and provides related software, financing, and energy market services. Its systems are manufactured in Kempele, Finland. The company also sells electricity to its energy storage customers in Finland.
History
[edit]Cactos was founded in 2021 by a team including Oskari Jaakkola and Veli-Erkki Ruotsalainen. Jaakkola became the company's CEO.[1][2]
The company's first product was launched in the summer of 2022, and was a 100 kWh energy storage unit built from recycled Tesla Model S electric vehicle batteries.[3] The company's first production facility was opened in Muhos the same year.[1]
As new lithium iron phosphate (LFP) battery cell prices fell, the company shifted from recycled batteries toward new cells for most of its units. The company launched its first model built with new battery cells in 2023.[3][1]
The company expanded its operations to Sweden and the Netherlands in 2023.[1]
In 2024, Cactos opened a new R&D and production facility in Kempele.[1]
From October 2025, Cactos began supplying electricity directly to its energy storage customers in Finland.[1] By the end of 2025, Cactos reported over 100 employees.[1]
According to the company, it operates five sites in Ukraine, where its systems provide backup power during outages caused by Russian attacks on the electricity grid.[1]
Business
[edit]Cactos manufactures, installs, operates, and maintains its battery energy storage systems directly. It offers the systems to customers on a service basis under leasing contracts, typically lasting ten years and covering equipment, software, operation, and maintenance.[4][1] Financing is provided through Cactos Fleet Finland Ky, an infrastructure fund managed by the company that owns the systems and leases them to customers.[4][2]
The systems are designed to reduce electricity costs by charging when electricity is cheap and discharging when it is expensive, and by limiting the peak power a site draws from the grid.[4] They can also supply power to supplement a site's grid connection, allowing higher short-term output than the connection alone provides, store self-generated energy, participate in ancillary service markets, and maintain backup power capacity.[3][1]
The company's software platform, Cactos Spine, controls the systems through data on energy consumption, electricity prices and weather. It also aggregates its distributed BESS units into a virtual battery that can participate in ancillary service markets and support the transmission grid.[5][2]
The product line spans indoor units of around 130 kWh up to grid-scale outdoor systems exceeding 9 MWh.[6]
According to the company, electric transport is its largest customer segment, followed by logistics and industry, driven by electrification and by limited availability of new grid connections.[7][1]
Funding
[edit]| Year | Amount | Lead investors | Notes |
|---|---|---|---|
| 2022 | €2.5 million | Superhero Capital, company founders[8] | |
| 2024 | €26 million | OP Finland Infrastructure LP, Finnish Climate Fund[9] | Equity into Cactos Fleet Finland LP |
| 2025 | €7 million | Union Square Ventures, Superhero Capital[10] | |
| 2026 | €12.5 million | Union Square Ventures[11] |
The 2026 round also included Tesi, Hyundai Motor Group, Silence VC, FJ Labs, JTel Oy, and Rando Ventures Oy.[11]
References
[edit]- 1 2 3 4 5 6 7 8 9 10 11 "HS Visio | Eikö sähköä voisi varastoida kuin öljyä, pohti Oskari Jaakkola ja perusti kasvuyhtiön". Helsingin Sanomat (in Finnish). 2025-12-16. Retrieved 2026-09-11.
- 1 2 3 Boxberg, Katja (2024-03-01). "Muhoslaiselta yhtiöltä kova lausunto: Haluaa sähkövarastoinnin Appleksi". Talouselämä (in Finnish). Retrieved 2026-09-11.
- 1 2 3 "Loppuiko latureilta hönkä, kun paikat ovat täynnä? Suomalaisfirmalla on tähän ratkaisu". www.iltalehti.fi (in Finnish). Retrieved 2026-09-11.
- 1 2 3 "Muhoslainen Cactos sai yli 26 miljoonan rahoituksen – Tietää kymmeniä uusia työpaikkoja Muhokselle". Kaleva (in Finnish). 2024-01-11. Retrieved 2026-09-15.
- ↑ Cousins, James (2024-01-11). "Meet Cactos, a Finnish startup that got €26M to address energy crisis with repurposed Tesla batteries — TFN". Tech Funding News. Retrieved 2026-09-15.
- ↑ "Battery energy storage system as a service for every scale". cactos.com. Retrieved 2026-09-15.
- ↑ "Energiavarastoista toivotaan Suomelle uutta vientituotetta – tällaisia ne ovat". Yle Uutiset (in Finnish). 2025-04-10. Retrieved 2026-09-11.
- ↑ Allen, Patricia (2022-11-29). "Finnish startup Cactos raises €2.5 million to tackle the energy crisis with second-life Tesla batteries". EU-Startups. Retrieved 2026-09-11.
- ↑ "Finnish Cactos grabs €26 million to power up expansion of smart energy storage systems - ArcticStartup". 2024-01-11. Retrieved 2026-09-11.
- ↑ Manninen, Laura (2025-02-16). "Pohjoissuomalainen yhtiö sai miljoonarahoituksen". Talouselämä (in Finnish). Retrieved 2026-09-11.
- 1 2 "Dealroom.co | Cactos closes €12.5M to scale battery storage across Europe". Dealroom.co. Retrieved 2026-09-11.
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