Smart cities are transforming transportation, reducing emissions and public costs while adding more choice and improving quality of life. COMMON SENSE!

Smart infrastructure for public transit, walking & biking is a GREAT INVESTMENT. Fund it accordingly. #ActionStartsHere @mayors4climate.bsky.social

Interesting! And a good thing.
Meanwhile, why are CSP plants shown in solar power stories? CSP - Concentrated Solar Power: no leap forward in efficiency per solar PV: early 2025, Africa total solar PV capacity approx 19.2 GW; the continent's total installed CSP capacity was only around 600 MW.

Sure! That seems like Natural Fabric First to me…

Another note too: I noticed when I was playing around in PHPP in my climate (Cold, Canada) and appliances:
> hanging clothes to dry uses
the same amount of energy as using a high efficiency clothes dryer (heat pump/condensing). What? Because of evaporative heat loss!
Pay for dryer, save the mold.

PHantastic!
Wait - does PHimby mean “Passive House forward?”
PHPHimby for the win!
Passive House Public Housing YES!

oh what's that - the people have a desire for max 5 story buildings?

point access blocks at 5 stories + inhabited attic will get you to 150 DUs per acre (>75K per sq. mile)

and i mean family sized ones. not the dinky micro homes that are all developers can build today

bsky.app/profile/holz...

Then, and only then, heating and cooling systems.
If you don’t have the $$ to do all the work at once, do an assessment and time the work so you are upgrading a part at a time.
EnerPHit Step Plan to the rescue!

Windows: if they’re falling apart, replace them with triple pane, efficient units. Model the energy performance. If you have the money, buy Passive House cool/temperate climate certified windows, and replace them all. If not, as needed.
Run the numbers.
Then insulation. Optimal for your climate.

Then look at the rest of the envelope.
Number 2 energy saving measure: airtightness. Ensure your windows and doors are airtight, work on the rest.
Uncontrolled air infiltration and exfiltration through your walls is a significant cause of damage to wood structures, after bulk water, outside.

That way, you have fresh, filtered air no matter what. Especially since:
(That’s for the west: OR, WA, BC. But during this past summer the map was far worse out where you live.)

Energy efficiency in older houses:
- first: install mechanical ventilation with heat recovery. If you can get natural fresh air and don’t need the mechanical unit to run, then fine. Only run it at low speed to ventilate the spaces in the building where natural ventilation won’t reach.
Do it first.