Who founded 1KOMMA5°?

1KOMMA5° was founded by Philip Liesenfeld in 2021.

Who are 1KOMMA5°'s investors?

1KOMMA5°'s investors include 2150, Carbon, CoastCap, eCAPITAL ENTREPRENEURIAL PARTNERS, Franz Haniel & Cie. GmbH, G2 Venture Partners, Norrsken VC, b2venture and 5 more.

1KOMMA5°

Founded 2021 · 21 known investors

Find your way into 1KOMMA5°

Your email: who you already know at 1KOMMA5°, and who your contacts know
2nd- and 3rd-degree connections: people you know who worked, studied or invested with the 1KOMMA5° team
Your LinkedIn: the connections who can make the intro for you

We rank every route by how warm it is, so you raise on warm intros instead of cold emails.

1KOMMA5° provides home energy systems that combine solar panels, heat pumps, battery storage, and EV wallboxes, coordinated by its Heartbeat AI software to optimize electricity use and offer dynamic pricing. It serves homeowners in Germany and across Europe through a network of regional installation partners, showrooms, and maintenance services.

Cleantech Climate Tech Energy

Founders & leadership

1KOMMA5° was founded in 2021 by Philip Liesenfeld.

Philip LiesenfeldCo-Founder & COO

Investors · 21

2150listed by 2150London

How we know: 2150's portfolio page · the VCSheet dataset · Not right? Tell us

Carbonlisted by CarbonAmsterdam · $21.6K

How we know: Carbon's portfolio page · Not right? Tell us

CoastCaplisted by CoastCapVienna

How we know: CoastCap's portfolio page · Not right? Tell us

eCAPITAL ENTREPRENEURIAL PARTNERSlisted by eCAPITAL ENTREPRENEURIAL PARTNERSMünster · $2.2M – $6.5M

How we know: eCAPITAL ENTREPRENEURIAL PARTNERS's portfolio page · Not right? Tell us

Franz Haniel & Cie. GmbHlisted by Franz Haniel & Cie. GmbH

G2 Venture Partnerslisted by G2 Venture PartnersPortola Valley · $15M – $25M

How we know: G2 Venture Partners's portfolio page · the VCSheet dataset · Not right? Tell us

Norrsken VClisted by Norrsken VCStockholm · $1.1M – $3.2M

How we know: Norrsken VC's portfolio page · the VCSheet dataset · Not right? Tell us

b2venturereportedBerlin · $270K – $5.4M

How we know: tech.eu · the VCSheet dataset · Not right? Tell us

EurazeoreportedParis

How we know: tech.eu · Not right? Tell us

G2VPreportedPortola Valley

How we know: funding news · salestools.io · Not right? Tell us

Hamilton LanereportedConshohocken

How we know: press coverage · Not right? Tell us

HV CapitalreportedMunich, Bavaria · $540K – $54M

How we know: salestools.io · Not right? Tell us

Porsche VenturesreportedLuxembourg

How we know: fyb.de · Not right? Tell us

Also in the syndicate · 8

2150vcBlue Elephant VenturesCalSTRSeCapitalG2 Venture Partners (G2VP)leadHanielNorrskenSabanci Climate Ventures

Funding

SEC filings, press & company announcements

Undisclosed amountpre-IPO roundJul 2025 · 2 sources
Source ↗
Undisclosed amountpre-IPO funding roundJul 2025
2150vc, b2venture, Blue Elephant Ventures, CalSTRS, eCapital, Eurazeo, G2VP, Hamilton Lane, Norrsken, Porsche Ventures, Sabanci Climate Ventures
Source ↗
Undisclosed amountPre-IPOMar 2025
G2VP (lead), HV Capital
Source ↗

Source: company announcements and press reports — follow each round's link for the claim.

Founder mafia

2 people who came through 1KOMMA5° went on to found or lead other companies.

Christoph OstermannMember of the Advisory BoardFounded sonnen Sophia RödigerChief Marketing OfficerFounded Bloxmove

Frequently asked questions

What does 1KOMMA5° do?: 1KOMMA5° provides home energy systems that combine solar panels, heat pumps, battery storage, and EV wallboxes, coordinated by its Heartbeat AI software to optimize electricity use and offer dynamic pricing. It serves homeowners in Germany and across Europe through a network of regional installation partners, showrooms, and maintenance services.
Who founded 1KOMMA5°?: 1KOMMA5° was founded by Philip Liesenfeld in 2021.
Who are 1KOMMA5°'s investors?: 1KOMMA5°'s investors include 2150, Carbon, CoastCap, eCAPITAL ENTREPRENEURIAL PARTNERS, Franz Haniel & Cie. GmbH, G2 Venture Partners, Norrsken VC, b2venture and 5 more.