Klarsolar

Mandatory Internship Marketing (m/f/d)

Join Klarsolar in Heidelberg as a Marketing Intern. Support marketing campaigns, create visual content, and collaborate across teams in the solar energy sector. Benefit from flexible hours, job ticket or bike options, and fitness subsidies. This role offers hands-on experience in a growing department focused on customer journey and brand alignment.
Klarsolar
Klarsolar Heidelberg, Germany Flexible Internship UTC+01:00

Klarsolar

Company Overview

Klarsolar GmbH

Heidelberg, Germany

2018

Approximately 150 employees and a revenue of 50.4 million USD in 2023 (source: zoominfo.com).

What They Do

Klarsolar GmbH is an innovative provider in the photovoltaic sector, specializing in the digital planning, sales, and installation of PV systems, energy storage, and wall boxes for private households. The company aims to make the use of solar energy simpler and more cost-effective for its customers, which is reflected in their motto: "Photovoltaics must become even easier and cheaper for our customers." Klarsolar offers comprehensive services, including a digital configuration within three minutes for cost estimates and profitability calculations, manufacturer-independent planning, and nationwide installation by local teams (source: klarsolar.de). The target markets are exclusively private households in Germany seeking 100% green electricity production and solutions for optimizing self-consumption.

Projects & Track Record

By the end of 2023, Klarsolar has successfully implemented over 400 PV projects for private customers, focusing on smaller residential installations with integrated storage and wall boxes. A notable project is the introduction of the Klarsolar HERO HEMS, developed in collaboration with gridX, aimed at equipping several thousand households by September 2024. This system optimizes the self-consumption of PV electricity, battery storage, EV charging stations, and heat pumps through a hybrid cloud/IoT technology that operates reliably even during internet outages (source: gridx.ai).

Recent Developments

One of the most significant developments in the past two years was the complete acquisition of Klarsolar by E.ON Energie Deutschland in December 2023. This acquisition enables digital scaling and increased installation capacity, which E.ON CEO Filip Thon highlighted as crucial for the company's future expansion (source: pv-magazine.com). Furthermore, the introduction of the Klarsolar HERO HEMS is seen as an important step towards optimizing energy efficiency in German households.

Working There

Klarsolar offers positions in various fields, including legal, IT, marketing, operations, project management, and sales. The company culture promotes close collaboration within the management team and values employee involvement in implementing the motto "easier and cheaper PV." The employee count of around 150 indicates a dynamic work environment that could further evolve following the acquisition by E.ON (source: klarsolar.de). Current job openings can be found on the company's career page.

Last updated on Feb 23, 2026 | Report an issue

Stellenbeschreibung

Gestalte die Zukunft der Solarenergie im E.ON Umfeld und entwickle Marketingmaßnahmen, die Kunden entlang der gesamten Customer Journey begeistern. Durch die Neuausrichtung unserer Abteilung und den Ausbau neuer Themen rund um Customer Journey, Sales Excellence und Brand Alignment wächst unser operatives Arbeitsvolumen deutlich und sucht einen Praktikanten/in im Bereich Marketing (m/w/d) als Verstärkung.

Was du lieben wirst

  • Ein modernes Arbeitsumfeld im Solar-Energiesektor
  • Enge Zusammenarbeit mit Marketing & Sales Excellence
  • Jobticket, kostenlose Parkplätze oder Jobrad
  • Fitness- und Sportzuschuss sowie regelmäßige Snacks von unserer Feel-Good-Managerin
  • Flexible Arbeitszeitmodelle für Studierende & Möglichkeit danach als Werkstudent weiterzuarbeiten

Deine Aufgaben

  • Erstellung von visuellen Assets (Flyer, Social Posts, interne Unterlagen) sowie Pflege und Weiterentwicklung unserer Marketingmaterialien
  • Unterstützung bei Kampagnenplanung und -auswertung
  • Mitarbeit an Customer-Journey-Projekten und Erstellung einfacher Reportings und KPI-Übersichten
  • Abstimmung mit internen Teams (Sales, Operations, Product)
  • Strukturierung und Nachhalten von Aufgaben und Deadlines sowie Erstellung von Meeting-Notizen, Zusammenfassungen und Mini-Briefs

Dein Profil

  • Eingeschriebene*r Masterstudent*in oder fortgeschrittene*r Bachelorstudent*in (Marketing, BWL, Medien, Kommunikation oder vergleichbar)
  • Grundlegende Designskills (Canva oder Adobe Express) sowie strukturierte Arbeitsweise und gutes Stakeholder-Handling
  • Freude an Gestaltung, Kommunikation und Hands-on Aufgaben
  • Sehr gute Deutschkenntnisse (C1)
  • Ggf. Reisebereitschaft im Rahmen von Solar Events

Bitte sende uns deine Bewerbungsunterlagen, inkl. Lebenslauf und Gehaltsvorstellung.

Wir freuen uns auf dich!

Dein Ansprechpartner: Andrea Günther

Apply now

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About the role

June 17, 2026

Internship

Company

June 20, 2026

Flexible

Solar Energy

Klarsolar

klarsolar.de

  •  Heidelberg, Germany

Student (Master or advanced Bachelor)

UTC+01:00

Tags

Community Energy · Customer Management · Marketing and Communications