Prorsum AG

General contacts
Investor type

PE / VC

Founded

2018

AUM

-

Location

Herrliberg, Zürich, Switzerland

Investment Ticket

$10-50 m

Investment Stage

Seed Series A

Region of investment

North America Europe Asia

ESG Focus

Impact investor
Investor profile last updated: 16 August, 2026

Profile

Prorsum AG is an energy investment firm based in Zollikon, Switzerland, founded in 2018 by Otto Troschke, a former Chief Investment Officer at SUSI Partners. The firm is dedicated to supporting founder-led companies that are driving advancements in the energy transition sector. Prorsum AG emphasizes close collaboration with entrepreneurs to scale impactful solutions in renewable energy, energy storage, and energy efficiency.

The firm invests in sectors such as renewable energy, energy storage, and energy efficiency, focusing on businesses with low capex-intensive models for efficient growth. While specific check sizes are not disclosed, Prorsum AG supports companies at various stages that can leverage efficient business models for scalable development. The firm does not publicly disclose its total assets under management or strategic partners.

Prorsum AG's notable investments include companies involved in clean energy and energy management solutions, although specific portfolio companies are not publicly listed. The firm's focus aligns with its vision of accelerating the adoption of clean energy technologies globally.

Industry

Business Services (B2B) Consumer Products Consumer Services (B2C) Utilities Energy CleanTech

Contacts

Name
Title
Email
Social Networks
avatar
Otto von Troschke CEO and Founder
CEO and Founder
-
LinkedIn
avatar
Nicole Colmenares Pulido Private Equity Analyst
Private Equity Analyst
-
LinkedIn
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FAQs about Prorsum AG

Prorsum AG is a venture capital and private equity firm. It backs companies at Seed and Series A, writing tickets of $10-50 m.
Prorsum AG is located in Herrliberg, Zürich, Switzerland.
Prorsum AG was founded in 2018.
Prorsum AG invests in companies and startups in Business Services (B2B), Consumer Products, Consumer Services (B2C), Utilities, Energy, CleanTech.
Prorsum AG invests in companies and startups in North America, Europe, Asia.
Prorsum AG invests in companies and startups at Seed, Series A.
Prorsum AG usually invests $10-50 m on average.
Yes, Prorsum AG is impact investor.
Prorsum AG can be reached through its website prorsum-capital.com and its LinkedIn page. Its general enquiries address is [email protected]. Cold-mailing a general inbox rarely reaches a partner, so Private Equity List also lists the investment-team contacts for Prorsum AG — names, roles, verified work emails and LinkedIn profiles — available on a Pro plan from $129/month (see pricing). Contacts are sourced from the firm's website and LinkedIn and re-verified on a rolling cycle. Spot a stale contact, or none at all? Report it — we re-run that firm within 48h and get back to you.
Yes. Every field on this page — profile, funds, investment criteria, portfolio and investment-team contacts — is available programmatically through the Private Equity List REST API and MCP server, so AI assistants such as Claude and ChatGPT can query Prorsum AG directly instead of scraping this page. One subscription covers both the web app and machine access — see API & MCP.
Private Equity List re-verifies investor profiles on a rolling cycle, pulling from the firm's own website and LinkedIn rather than a one-off import. This profile was last updated on 16 August, 2026. Something out of date here? Report it — we re-run that firm within 48h and get back to you.