The idea

The number of new solar and renewable energy websites is constantly increasing and has been since the late 90s. This makes it more and more difficult to gain an overview of websites offering the most important and interesting information.

The idea of Top50-Solar was to measure the popularity of websites with renewable energies and to publish a top list. Top50-Solar measures the number of visitors on a website and gives you a unique opportunity to quickly gain an overview of renewable energy companies and organisations.

Today's Profile

As the internet continues to change so does Top50-Solar. We strive to employ new and innovative technologies so we can provide you with relevant and up to date information about renewable energies in a user-friendly way.

Top50-Solar is your gateway to the world of renewable energies on the internet.

In addition to the original Toplist, we offer a number of possibilities to support you in your search for information, such as:

• Tag search
• Advanced search: search for categories
• Alphabetical company directory
• Solar Search: a full-text search engine specialising in renewable energies
• News: the latest and most important news providers sorted by categories. (currently only offered for the German version)
• and much more...

Feel free to try out the various possibilities of Top50-Solar

Despite the numerous features which have been added in the past year, one thing has remained the same: the registration of companies and websites with Top50-Solar continues to be free of charge. Here you can find out further information about the advantages of signing up and the various membership options we currently have. New registrations are always welcome so sign up and be included in the success of Top50-Solar. Give it a try and see the results!

History and Milestones

2000: Top50-Solar was founded by Dr.-Ing. Martin Staffhorst. As one of the first web catalogs with representative visitor statistics, Top50-Solar took a lead role in the sector of renewable energies.

2001: Server upgrade and co-operation development with sponsoring partners

2002: Graphic redesign with new, improved layout

2003: Start of the price comparison service for photovoltaics and solar thermal installations (currently only offered for the German version)

2004: Trademark registration of Top50-Solar®

2005: Upgrade to the new content management system Typo3 and server upgrade; introduction of new languages English, Spanish and Portuguese; introduction of categories and filtering options; new design layout.

2006: Start of the Top50-Solar News section (currently only offered for the German version)

2008: Server upgrades

2009: Complete re-launch with brand new design; Start of Solar Search