There must be a number of Mustachians that have put some serious thought into environmental restoration and social justice.
That's... an interestingly loaded set of terms you pick for a thread nominally on the topic of sustainability. Do you care to define them more (as relatively few people have responded to anything along those lines), or are you just picking loaded terms for some point or another that you don't care to expand?
"Sustainability" and "environmental restoration" are reasonable enough, though the "restoration" aspect is a bit less common, blending "social justice" into that without further explanation is odd. They have relatively little to do with each other, at least on the surface, so it would be useful for you to weave together what you care to talk about in more detail, which you've not done.
- Taking personal action
From a sustainability perspective, I built large ground mount solar array, PHEV, though the off-grid office sort of counteracts most of that. It's an awful lot of solar that doesn't do a whole lot for large parts of the year, though I'm working on getting things lined up so I can charge the car off that system this year instead of off the house system. The joys of off-grid power systems, sized for winter, overkill in the summer. I blow off the surplus with compute (BOINC mostly), though putting power into the PHEV is probably more useful. I'll see how that works.
However, I've been trying to leverage some of my free cashflow into more solar deployments in the area, and am working with someone to develop a bit more of a streamlined process for homeowner-installed DIY ground mount stuff - still has to meet code, get permits, etc, but is radically easier, simpler, and, if we've got anything to say about it, faster than doing roof mount. I've got a large order of panels on order (100x 72 cell, 60 or 80 of which have buyers at cost) because it's cheaper to get a truck of panels than to buy stuff locally, by far. I've got the financial resources to be able to do that, so I'm trying to make use of those to increase the amount of local solar deployed. For the prototype systems, I'm also funding some of the R&D parts involved, because I think there's a niche business that could be made out of it, but dropping a couple grand on steel tubing to play around just isn't that big a cost for me - largely due to my living below my means. If a few of us get some sustainable cashflow out of it, great, if not, I've helped deploy another 30-40kW of solar in the area. But given that we tend to have free space out here, I'd like to continue iterating on it and, while not having to be an actual solar installer, assist with a lot of installations where I can legally do the work. Even if it's not net zero, just popping out 7kW A-frames on 6kW inverters (which can backfeed into a 200A panel without upgrades) would be useful for a lot of people. I think we can do $1.50/W, maybe less. If we can get all-in cost down to $1.25/W or less, for people to do it themselves, that's darn nice. No profit in it at that point, but neither do I actually care that much.
Connecting with other to discuss the topic (online or in person)
Online is pretty well played out. Lines have been set, drawn, and teams chosen, so I just don't find a lot of value in it anymore. In person is far more interesting, and that's part of why I want to get solar costs so drastically down for a homeowner install - $4/W ripoffs don't accomplish much but commissions for the salespeople, being able to provide materials and support for a $1.50/W install (these are all pre-tax prices) opens up a lot of options. If I could find the funding, I'd investigate putting a couple MW on our hill, but I don't have a spare few million right now, or the time to go hunt it down. But I'd love to see a range of smaller, community solar type installs that are owned by various people in the immediate area (either with financial investment or time investment - the actual electrician requirements for hooking stuff up are fairly small compared to the physical labor requirements for doing an install).
I doubt this would scale well outside the immediate area, but there are plenty of people around here we could keep a few people busy with. Skip roof mounts, avoid the roof work insurance, and just stamp out cheap ground mounts. Someone in the area is doing similar things, I've just not found out who yet. There are a bunch of very similar looking ground mounts I need to track down the company on.
Engaging with the topic in your career
I don't. Not my area of expertise. Just hobby projects. My career earns me the money to have the surplus to be able to do various things like this.
What questions should we be asking? What should we be talking about more than we are?
Trash generated is a good one. People should cancel their trash service and haul their own, it's a great motivator to bring a lot less crap into the house, and find ways to reduce/reuse before recycling/trash. Reusing a box for shipping, or giving it to someone who will, is a lot better than recycling it. Same goes for repairing things before replacing them. Some of the threads around here are pretty stupid on that front.
- What is a Mustachian approach to sustainability?
It will vary depending on the people and the area. But I think finding ways to use the available cashflow freed up to have a local impact is worth a good bit.
Or maybe I just have aspirations of being the local solar panel oligarch or something.