The Explorer is a one-of-a-kind search engine that showcases profitable climate solutions from all over the world which are part of an ever-growing, curated, and publicly-accessible database. Select your profile, your needs and climate goals to discover the solutions that fit best with your situation.

Explore Learn more

Cancel Confirm

My Search Alerts

The Solutions Explorer lets you create alerts that match your needs. You can create several alerts and you will receive a notification each time a new Solar Impulse Efficient Solutions is labeled and matches your filters.

Your Search Alerts will show up here.

Sign in to create alerts for your filters and search terms.

Sign in

Don't have an account?

Sign up

My Favorites

The Solutions Explorer lets you shortlist your favorite solutions.

Your favorites will show up here.

Sign in to add a solution to your favorites.

Sign in

Don't have an account?

Sign up

Contact the Solution's Provider

You can contact each Solution’s Provider through the « Solutions Explorer » contact form. The team will also follow up to make sure you’ll have an answer to your request.

Your contact form will show up here.

Sign in to contact the Solution's Provider

Sign in

Don't have an account?

Sign up

My Account

Sign in

Don't have an account?

Sign up


Ultra-lightweight, flexible and ultra-thin organic solar solution for rooftops

April 2020
  • /

HeliaSol by Heliatek implemented by Engie in La Rochelle (France) in 2017

20.925 kwh produced in 2019 & ⊓ 1,300 kg co2 compared to the french grid electricity mix


Ultra-lightweight, flexible and ultra-thin organic solar solution for rooftops

  • World Alliance Member
  • Featured Solution
  • Labelled Solution
Label Date April 20, 2020
Parent company ENGIE
From Germany
Maturity stage TRL 7 - Prototype testing in the real world

HeliaSol® is flexible, ultra-lightweight and ultra-thin, which enables more surfaces to become energy generator. The film is perfectly suited on curved or non-straight rooftops, ones with low static conditions like old buildings or lightweight industrial buildings, which usually cannot take traditional PV solutions. Even Façade installations can be realised with HeliaSol®. The solar film is a ready-to-use product with a specific adhesive on the back, which is glued directly to surfaces like steel, concrete and rooftop membranes.

The Environmental Benefits

  • A carbon footprint of 5-7 g CO2e/kWh for central Europe in comparison to 1000g CO2e/kWh for brown coal
  • Ultra-lightweight (less than 2 kg/m²), very thin (less than 2 mm (excluding junction box)), and flexible (minimum bending radius of 50 cm)

The Financial Benefits

  • Energy Payback Time (EPT) and Carbon Payback Time (CPT) of less than 6 months

Target client profile

Activity Region

  • Headquarters
  • Activity

Company Profile


World-leader in industrial-grade organic solar films for decentralized electricity generation.

Headquarters 01139 Dresden, Deutschland
Type Startup or self-employed
View company profile Solution website

Parent company


Our group is a global reference in low-carbon energy and services.

Headquarters 92400 Courbevoie, France
View company profile


Contact the Solution Provider Add to Favorites

The information set out above, is solely for the purposes of information and the Solar Impulse Foundation does not provide any guarantee as to its authenticity, completeness or accuracy. This information does not constitute investment advice or a recommendation to buy into, transact or to enter into any agreement with any of the parties or persons mentioned above. Potential investors or interested parties are solely responsible for their investment or business decisions and for performing any due diligence required by the circumstances. The innovator Heliatek has asserted ownership of the intellectual property rights for images, videos, and content showcased above, affirming full and unrestricted usage rights, and has provided explicit permission for the Solar Impulse Foundation to publish such information designated as "public" in the application form.