If OP is doing orbital dynamics in their day job, they probably live in California. JPL, Raytheon, LLNL, LBL, and Berkeley are all here.
Even if they don't have rooftop solar, most of our grid is renewable. Their local GPUs have a decent chance of being more environmentally friendly than charging your cell phone, depending on where you live.
And using it for science and programming is really different than using ChatGPT to write you an email. I'm home right now, but I have two agents at work running debug and trial experiments, and they'll be running it all night until I get in in the morning. I'll review their work and steer them all day while I'm in the office; and while those two completely different projects are running, I'll be personally working on a third. They are enormous productivity multipliers when you have a well-defined and deterministic target.