I wish it made sense in my case:

• I’m too far north for solar to provide anywhere close to enough power for 5 months of the year, even if I have it overbuilt to x4 of what I need in the summer
• I’m in a low average wind speed area (less than 4 m/s) - making wind power about 3x more expensive than solar. Also local law effectively prevents me from settting it up (minimum distance from residential rule)
• no net metering available, net billing rules suck
• grid is at capacity, so getting new solar connected is problematic and even if you manage that it won’t accept your output through most productive months of the year
• my car is a relatively new hybrid (but not a plug-in one) - I’m not replacing it until I run it into the ground
• tl;dr; my auto consumption will be low, grid won’t accept extra power greatly extending the break even period

At least I’m using biomass for heating - wood or sunflower shell pellets.

Your app / website is most likely not big enough to rely on icons instead of text for buttons. Same applies to most other unique UI choices.