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# With Sonder Labs, former Northvolt co-founder and CEO Peter Carlsson returns to the energy space
- URL: https://www.swedishtechnews.com/with-sonder-labs-former-northvolt-co-founder-and-ceo-peter-carlsson-returns-to-the-energy-space/
- Published: 2026-08-11T17:31:13.000Z
- Updated: 2026-08-12T06:35:47.000Z
- Description: Peter Carlsson, co-founder and former CEO of collapsed Swedish battery maker Northvolt, is now building two new startups simultaneously. One of them, Sonder Labs, is just coming out of hiding.
- Author: Martin Weigert
- Tags: Sonder Labs, Northvolt, Peter Carlsson

*News first covered in the daily PRO newsletter* [*on August 10*](https://www.swedishtechnews.com/swedish-tech-news-pro-aug-10-2026/)*.*

Not long after the collapse of Swedish battery maker Northvolt, co-founder and former CEO Peter Carlsson was back in the entrepreneur's seat, as co-founder of agentic manufacturing startup [Aris Machina](https://www.arismachina.com/), alongside Northvolt's former AI chief Siddharth Khullar).

But that's not all: Carlsson has quietly co-founded another startup; and this one even closer to his former company's space: 

[Sonder Labs](https://sonderlabs.com/), like Aris Machina headquarted in Stockholm, is aiming to upgrade electrical grids, to make them "high-performing, sovereign and cost-efficient".

Sonder remains technically still in stealth, so information is sparse. But a few days ago, Carlsson mentioned it for a first time in a [LinkedIn post](https://www.linkedin.com/posts/ecspcar%5Fchina-free-batteries-made-from-salt-are-finally-activity-7492472577265901568-4CJI/), highlighting that Sonder will focus on sodium based battery storage.

Sonder is clearly getting ready for its public launch, as both Carlsson, as well as co-founder and CEO Andreas Haas, have added the company to their LinkedIn profiles. Haas previously led Northvolt's sodium-ion division. He and Carlsson have also recruited a number of former Northvolt leaders to Sonder.

The new energy infrastructure startup has already raised substantial funding. On June 1, [I covered](https://www.swedishtechnews.com/swedish-tech-news-pro-june-1-2026/#unannounced-funding) Sonder's first round in Swedish Tech News PRO, as it was registered with the Swedish Companies Registration Office (sourced via [Eivora](https://www.eivora.com/)). This funding amounted to €4.5M, raised at a pre-money valuation of around €10M. 

The raise has not been officially announced yet, as far as I can tell. But [according to Pitchbook](https://pitchbook.com/profiles/company/960525-19), Germany-based Ananda Impact Ventures and Vireo VC, and US-based Streetlife Ventures, are among the investors.

The legal entity Sonder Labs AB and involvement of Carlsson was [first spotted](https://www.folkbladet.nu/2026-03-09/peter-carlsson-i-ny-mojlig-batterisatsning-a51dd) by Folkbladet in March. I covered more initial details in PRO on [March 10](https://www.swedishtechnews.com/swedish-tech-news-pro-mar-10-2026/#news-from-swedish-startups-the-tech-sector-and-vcs).

ℹ️ [Company details page](https://data.swedishtechnews.com/startup-details/sonder/r/L3xm8GvegCFiW6)

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