California is on a path to decarbonize our grid and in order to support our energy policy, our buildings must shift from reliance on fossil fool gas, to utilize renewably generated electricity. This presentation was shared in SLO as part of their 'Decarbonize our Buildings' events on August 22nd. It dives into the details of a home in a similar climate zone to California's Central Coast, that I designed in 2014 and built using all-electric equipment and appliances. My presentation includes both predicted and monitored energy, and shows that by going BEYOND CODE MINIMUM, I was able to radically reduce energy use, optimize comfort and deliver a very cost-effective building.

1. Beyond
The All Electric Rainbow
Bronwyn Barry, RA CPHD
SLO Electrification Forum
Aug. 2019

2. Normal people are doing this!

3. Induction cooking is clean!
(Directly vented to the outside)
▪ Super easy to wipe down
▪ Super fast response time
▪ Super easy to control
temperatures

4. Design for ducts…

5. Heat pump heating & cooling…
Heating load: 4.2 kBTU
Cooling load: 2.7 kBTU
▪ 1-ton ducted mini-split
▪ Variable speed fan coil
▪ ECM motor
▪ Chlorine-free non-ozone
depleting refrigerant
▪ installed in fully insulated attic
▪ (~$5K)

6. Condenser outside…
▪ Fujitsu compressor
▪ Very quiet…!

7. Installation photo…

8. Heat recovery ventilator…
Zehnder ComfoAir 350
▪ Filtered, FRESH air
▪ Supplied 24/7
▪ Quiet as a mouse…!
($2,950)

9. Make ‘nozzles’ beautiful!
Seiho directional diffusers
▪ Never hear your furnace
wheeze again!
▪ Direct your air to where
you want it

10. And old windows useful…
Bring them inside & out of
the cold!
▪ Dimmable all LED lighting

11. Heat pump water heater
Stiebel Eltron
Accelera 300
80gallon HPWH
▪ Programmable
▪ Fits in the garage
▪ (Needs room to ‘breathe’)

12. Barely visible roof ’bling’…
▪ 7.7 kW Sunpower PV array

13. Inverter and converter…
▪ Solar inverter for the PV Array
▪ Siemens EV Charger

14. My Title-24 Report…
2015 Code cycle:
▪ 57% Space Heating
▪ 23.9% Space Cooling
▪ 0.0% IAQ Ventilation
▪ 0.0% Water Heating
OVERALL: 24.9% better
(THAN WHAT?)…..
I have no idea either!
My Passive House Planning Package
(PHPP)Outputs:
Absolute outputs, clear metrics
and measurable targets!

15. PHPP PREDICTED
MEASURED
AV. HOME IN SAME ZIP
4.3x
TOTALS:
Av. Home in Same
Zip:
15,788 kWh
Passive House:
6,125 kWh
= 38% of standard
DIFFERENTIAL AT
WINTER PEAK:
Av. Home in Same
Zip:
2,516 kWh
Passive House:
597 kWh
= 23% of standard
Proof is in the pudding…

16. Generation > House use
510 kWh monthly av. used
797 kWh monthly av. produced

17. Add the Electric Vehicle…
797 kWh monthly av. produced
726 kWh monthly av. used

18. Translate that into $...
+$195
+$75
-$230
This means that PG&E owes my clients $50
to operate their house and drive their car! (In theory)
+$270 -$230 = $50

19. What’s the secret sauce?

20. It’s in this (passive) Box…
< NO ICE LEFT
UNIHABITABLE
½ ICE LEFT
STILL COOL>

21. Can I do this too?
REGISTER FOR 2019 (or 2020):
Emeryville: Oct. 10th – Nov.1st
https://naphnetwork.org/designer-training/
YES!
www.passivehousecal.org