1/29/2018: FINAL Transition of WELserver.com

The WELserver.com logging website has been migrated to a new cloud server.
If your WEL is using an IP to post data (instead of the host domain name "WELserver.com"), the IP needs to be changed to

Simply put, the WEL (or Web Energy Logger) is a cost-effective way to map the energy flows in your home or office. It can help verify the performance of a solar thermal system, calculate the efficiency of a geothermal installation, or even prove that your home really is "Net Zero".

Not only does the WEL give you a window into your own energy environment, but you can be part of a bigger green community and share your live system-snapshot and trend-charts on the WEB in real-time. Click on the "What is the WEL?" link (above) to learn more, or explore the map below to see what other WEL users are doing globally.