co2online.de
Free online energy-saving checks and renovation advice for homeowners and tenants in Germany
Highlights
- New on EvolcAdded 2026-10-27
About co2online.de
co2online is a non-profit organisation that offers free digital energy-saving tools for homes. Its EnergiesparChecks cover heating, renovation, funding, photovoltaics, heat pumps, electricity and hot water, and it also publishes articles and runs the VierWende community for homeowners planning renovations.
Its customers are private homeowners, landlords and tenants in Germany. The advice is provided free of charge and without advertising, and the organisation works with a partner network of over 150 actors from many industries.
The organisation has been active for more than 20 years and reports advising over 500,000 people per year digitally. It has offices in Berlin-Schöneberg and Stuttgart and a team of over 50 people.
Product: Free online EnergiesparChecks for heating, renovation, funding, photovoltaics, heat pumps, electricity and hot water, plus articles and the VierWende community.
Jobs at co2online.de
Leadership
- Johannes D. Hengstenberg · FounderSource: company website
- Tanja Loitz · GeschäftsführerinSource: company website
- Sebastian Metzger · ppa. Mitglied der GeschäftsführungSource: company website
- Manja Weber · Leiterin Organisation / Allgemeine VerwaltungSource: company website
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Website technologies
Tools and platforms detected on this company’s website, grouped by purpose. Dates record when Evolc observed them.
Content management
- TYPO3High confidence
- First detected
- Last detected
- Last checked
Detection evidence
- Site generatormeta generator
- Site generatormeta generator
- Site generatormeta generator
Hosting
- ApacheHigh confidence
- First detected
- Last detected
- Last checked
Detection evidence
- Response headerserver
- Response headerserver
- Response headerserver
Website detection does not establish a paid subscription or company-wide use. Tools loaded after consent or sign-in may be missed. “No longer observed” does not prove the company stopped using a tool.
