Technically speaking, pretty much all of our power is solar power with extra steps.

Maybe ご多忙中 (ごたぼうちゅう) is a good example? Something like “Excuse me for interrupting you when you are so busy”.

Edit: 盥回し (たらいまわし) - handing off a problem to someone else to evade responsibility

https://anilist.co/manga/30436/Uzumaki-Spiral-into-Horror/ Read at your own risk of feeling icky afterwards

-tan seems to be a cutesy / baby-talk version of -chan.

There is another: https://en.m.wikipedia.org/wiki/Mistel