Can I use my Sun-Mar toilet if I have solar power?

Generators and solar panels are often an integral part of ensuring you have a comfortable, warm stay in your off-grid home away from home. With the wide range of options for power capabilities, a question that our sales team gets a lot at shows and in our showroom* is, ‘Can I use an electric Sun-Mar toilet if I have a generator or solar panel array?’

The short answer is no, we do not recommend using an electric Sun-Mar toilet in an installation where a solar array or a generator is your primary source of power.

With this in mind, Sun-Mar has some alternative solutions that do not require a conventional power supply. One such solution is the Excel NE, or non-electric, which has a comparable capacity to the electric Excel. It has an optional 12 volt fan that can be installed in-line and powered by a battery and solar panel.

The second solution is the AC/DC Conversion kit, which allows electric toilets like the Excel, and the CENTREX 2000 and 3000 toilets, to be modified so they can function without electricity. This is usually best used in installations where there is inconsistent power available (ie. rolling blackouts, etc).

Either one of these options would be suitable for an off-grid or remote cabin or cottage, and could be easily installed. If you have any questions on the Excel NE or any other of our toilets, please contact our sales department at 1 888 341 0782 ext 1032, or via email at

If you have an existing electric toilet and have questions about whether the AC/DC Conversion kit could be worked into your installation, please call our customer service department at 1 888 341 0782 ext 1018, or via email at

solar power 12 volt fan

*Please note: The information in this post is not intended to replace your owner’s manual. As each installation is different, if you have any questions, our customer service department is more than happy to help, and can be reached at 1.888.341.0782 ext. 1018, or via email at **