I wouldn't push anyone into taking all these actions, and living in Boulder certainly helps in several ways, but I feel that many of these steps could be taken by a lot of people.
This is just a first start at this WWW page. I'll try to flesh it out with more specifics (brands/models/numbers/photos) when I get a chance.
We also have selected reasonably energy-efficient cars. Both are Volkswagen wagons at the moment, but we've never (in 25 years) owned a vehicle that got less than 30 mpg.

Over 2 years, our system has now produced almost 9 MWh and we have given back 0.7 MWh to the grid. We would have produced more that would have been given back, but last Spring I accidentally kicked apart one of the connectors while cleaning snow off the panels :( -- at the end of last year the surplus was 0.4 MWh. Xcel somehow calculated last year's amout as 0.602 MWh and sent us a check for $20.91 (at 3.414 cents/kWh). However, they also reset our "0" reading to the same 0.602 in the middle of winter (near our system's anniversary). Since we are net consumers this time of year, Xcel last year billed us for 0.145 MWh use (at 7.462 cents/kWh), so we had to pay them back $10.82 for electricity we produced!!! This year's check was for $5.91 and we haven't yet seen the consumption bill. If we had installed our system in any other season, we wouldn't have this double-billing. This isn't fair, but was in our original contract that we were forced to sign...
The output rate of our system is shown below.

I have added to this graph a curve which represents a prediction based
on the actual panels, their actual orientation, the actual shading of our
roof from neighbor's trees, cloud-free input of 1000 W/m^2, assuming
800 W/m^2 direct and 200 W/m^2 diffuse radiation. I then multiplied this
prediction by 0.55, which appears to match our output. Thus, we are getting
55% of clear sky values, which presumably mostly is due to cloud cover, though
some is due to less than perfect efficiency of the system, and snow covering
the panels from time-to-time. I've also added a dashed line showing what
we
We have to admit that with a pre-solar electric bill of only
$300/year, it will take over 40 years to pay back the photo-voltaic system!
(Assuming that future electric rates approximately follow interest rates.)
Thus, even with rebates this project isn't really cost effective.
Nevertheless, $13K was affordable for us.