Alstonvale Net Zero home - one of the CMHC EQuilibrium home winners. From Green Building Festival 2007

1. Alstonvale Net Zero House
Montréal ZERO
SEVAG POGHARIAN DESIGN
3705 Saint Ambroise
Montreal, Quebec
H4C 2C4
514-935-5210
www.spd.ca
www.MontrealZERO.ca

3. Core Project Team
Sevag Pogharian Design, team leader
Concordia University
Solar Buildings Research Network
Concept R
Régulvar
Airtechni
Solar Design Associates (SDA)

4. Project Highlights
One of twelve winners of CMHC’s EQuilibrium initiative
Single-family detached, site-built house in Hudson, Québec
Designed for incremental growth
Uses PV-thermal technology
Uses graywater and harvests rainwater

5. Goal
• Change the single-family homebuilding paradigm
Shift it towards an approach and a methodology that has, at its core, considerations of site,
environment and resource efficiency

6. EQuilibrium Objectives
Health
Energy
Resources
Environment
Affordability

7. Additional Objectives
LEED certification - platinum
PV-thermal demonstration project for IEA
Achieve net zero energy lifestyle

8. 5.5 Domestic needs
kW
1.5 kW car
Charge an electric
7 kW
Total Generation

9. Net Zero Energy Lifestyle
Domestic energy needs
Local transportation energy needs

10. Plans

11. BASEMENT AREA:! !
Basement habitable: 28 sq.m. (301 sq.ft.)
5,000 litre reservoir
(54" x 84" x 67")
UNEXCAVATED
MECHANICAL ROOM
Up
Storage
NET ZERO ENERGY HEALTHY HOUSING!
Hudson, Quebec!
Basement!
Date: 10 January 2007
Sevag Pogharian Design
www.spd.ca 0 1 2 5 10 feet

12. MAIN FLOOR AREAS:! !
Footprint:! 166 sq.m. (1,789 sq.ft.)!
Main floor habitable:! 84 sq.m. (909 sq.ft.)!
Garage: 50 sq.m. (540 sq.ft.)
Bicycle !
storage
Vegetable garden!
(microclimate)
GARAGE
KITCHEN
LIVING ROOM
Masonry wall for thermal mass
DINING Up Dn
Up
Rolling insulating panels
Sunscreen above
NET ZERO ENERGY HEALTHY HOUSING!
Hudson, Quebec!
Main Floor Plan!
Date: 10 January 2007
Sevag Pogharian Design
www.spd.ca 0 1 2 5 10 feet

13. UPPER FLOOR AREA (INITIAL PHASE):!!
Upper floor habitable: 89 sq.m. (959 sq.ft.)
Walk-in Laundry! Storage
Room
BEDROOM 3
Dn
BEDROOM 1 BEDROOM 2
NET ZERO ENERGY HEALTHY HOUSING!
Hudson, Quebec!
Upper Floor - Initial Phase!
Date: 10 January 2007
Sevag Pogharian Design
www.spd.ca 0 1 2 5 10 feet

14. Slope 9:12
Slope 9:12 Slope 9:12
Slope 12:12
Slope 12:12
Slope 12:12
NET ZERO ENERGY HEALTHY HOUSING!
Hudson, Quebec!
Roof Plan!
Date: 10 January 2007
Sevag Pogharian Design
www.spd.ca 0 1 2 5 10 feet

15. BEDROOM 1
DINING KITCHEN
Bicycle storage
MECHANICAL ROOM
NET ZERO ENERGY HEALTHY HOUSING!
Hudson, Quebec!
Section C - Initial Phase!
Date: 10 January 2007
Sevag Pogharian Design
www.spd.ca 0 1 2 5 10 feet

16. Storage
Rolling insulating panels GARAGE
Y HOUSING! NET ZERO ENERGY HEALTHY HOUSING!
Hudson, Quebec!
Section D - Initial Phase!
Date: 10 January 2007
Sevag Pogharian Design
www.spd.ca 0 1 2 5 10 feet

17. Powder room LIVING
Y HOUSING! NET ZERO ENERGY HEALTHY HOUSING!
Hudson, Quebec!
Section E!
Date: 10 January 200744
Sevag Pogharian Design
www.spd.ca 0 1 2 5 10 feet

18. BEDROOM 1 BEDROOM 2
DINING LIVING
MECHANICAL ROOM STORAGE
Y HOUSING! NET ZERO ENERGY HEALTHY HOUSING!
Hudson, Quebec!
Section A!
Date: 10 January 2007
Sevag Pogharian Design
www.spd.ca 0 1 2 5 10 feet

19. Vestibule Powder room GARAGE
Y HOUSING! NET ZERO ENERGY HEALTHY HOUSING!
Hudson, Quebec!
Section B - Initial Phase!
Date: 10 January 2007
Sevag Pogharian Design
www.spd.ca 0 1 2 5 10 feet

22. Design Flexibility
Initial Phase
Basement Main Floor Upper Floor Roof
Incremental Growth
same same same
Basement Main Floor Upper Floor! Roof
!
!
A bedroom suite is added for an
elderly parent or other

23. UPPER FLOOR AREA (INITIAL PHASE):!!
Upper floor habitable: 89 sq.m. (959 sq.ft.)
Walk-in Laundry! Storage
Room
BEDROOM 3
Dn
BEDROOM 1 BEDROOM 2
NET ZERO ENERGY HEALTHY HOUSING!
Hudson, Quebec!
Upper Floor - Initial Phase!
Date: 10 January 2007
Sevag Pogharian Design
www.spd.ca 0 1 2 5 10 feet

24. UPPER FLOOR AREA (FINAL PHASE):! !
Upper floor habitable: 112 sq.m. (1,207 sq.ft.)
BEDROOM 4
Walk-in Laundry!
Room
BEDROOM 3
Dn
BEDROOM 1 BEDROOM 2
NET ZERO ENERGY HEALTHY HOUSING!
Hudson, Quebec!
Upper Floor - Final Phase!
Date: 10 January 2007
Sevag Pogharian Design
www.spd.ca 0 1 2 5 10 feet

25. Vestibule Powder room GARAGE
Y HOUSING! NET ZERO ENERGY HEALTHY HOUSING!
Hudson, Quebec!
Section B - Initial Phase!
Date: 10 January 2007
Sevag Pogharian Design
www.spd.ca 0 1 2 5 10 feet

26. Bathroom BEDROOM 4
Vestibule Powder room GARAGE
Y HOUSING! NET ZERO ENERGY HEALTHY HOUSING!
Hudson, Quebec!
Section B - Final Phase!
Date: 10 January 2007
Sevag Pogharian Design
www.spd.ca 0 1 2 5 10 feet

27. Storage
Rolling insulating panels GARAGE
Y HOUSING! NET ZERO ENERGY HEALTHY HOUSING!
Hudson, Quebec!
Section D - Initial Phase!
Date: 10 January 2007
Sevag Pogharian Design
www.spd.ca 0 1 2 5 10 feet

28. BEDROOM 4
Rolling insulating panels GARAGE
NET ZERO ENERGY HEALTHY HOUSING!
Hudson, Quebec!
Section D - Final Phase!
Date: 10 January 2007
Sevag Pogharian Design
www.spd.ca 0 1 2 5 10 feet

29. Project Schematic

30. To domestic RAINWATER
water needs COLLECTOR
Damper: D3 Exhaust at East façade
Collector
INSTANEOUS
WATER HEATER
EVACUATED SOLAR THERMAL TUBES DEHUMIDIFIER
40 tubes @ 30° inclination from horizontal Aprilaire Model 1700
(only on during summer)
HEAT
of
DISSIPATOR
ro
PELLET BOILER
ng
Harman PB105
ci
fa
V2a
thu
water jacket Out
So
on Y
ng L
drain from dehumidifier
zi B
la M
r g SE
ea S
cl A
& AL
In
ra RM
Ar HE
y
PV V T
P
um
en
shower
pl
55°C
PV
V4e
V4d V4c
V4b
V2b V4a
P4a
P2a DHW TANK
Stiebel Eltron
SBB300 Plus
305 liters
(80.6 gallons)
Temperature Range
Summer: up to 90°C
Winter: typically 10°C to 30°C
WATER TO WATER
HEAT EXCHANGER
Overflow
Power-Pipe
P1a
P1d
Make-up
WATER SOFTENER
Heat exchanger: HE-1 P1b HEAT PUMPS
Two - 3-Ton Climatemaster (GSW036)
Water-to-water, heat pump
GREYWATER
RECOVERY
P1e
Make-up water
To irrigation
P1c
P5a
P6a
V5a
Water supply
temperature range:
Max.: 49°C
Min.: 30°C
P7 Typical: 35°C to 45°C
Overflow
Variable speed, ECM fan
1,000 cfm air = 85%
HYDRONIC RADIANT
FLOOR HEATING
SPACE HEATING ZONES & CONTROLS:
Controlled:
Zone 1: Main floor, i.e. living, powder room, dining & kitchen
To septic system
Zone 2: Garage
Zone 3: Upper floor bedrooms
Water Main
Individual Thermostat Controlled:
THERMAL STORAGE RESERVOIR All upper floor bathrooms RAINWATER STORAGE RESERVOIR
Exhaust 4,000 liters (±1,000 gallons US) 5,000 liters (±1,300 gallons US)
Temperature range: 30°C to 60°C
with stratification
HRV
Ventilation exhaust
Fresh air intake
HRV
Secheuse / clothes dryer

31. Energy Consumption

32. SPACE WATER
HEATING HEATING APPLIANCES LIGHTING COOLING
CONVENTIONAL 22,000 6,000 8,000 1,000 2,000
R-2000 14,000 5,000 6,000 1,000 500
ADVANCED HOUSE 7,000 2,500 3,500 500 500
ALSTONVALE 137 0 0 0 0
40,000 kWh
30,000
20,000
10,000
0
Conventional R-2000 Advanced House Alstonvale
Energy Consumption - with PV generation

33. SPACE WATER
HEATING HEATING APPLIANCES LIGHTING COOLING
CONVENTIONAL 22,000 6,000 8,000 1,000 2,000
R-2000 14,000 5,000 6,000 1,000 500
ADVANCED HOUSE 7,000 2,500 3,500 500 500
ALSTONVALE 3,400 150 3,000 365 0
40,000 kWh
30,000
20,000
10,000
0
Conventional R-2000 Advanced House Alstonvale
Energy Consumption - without PV

34. SPACE WATER
HEATING HEATING APPLIANCES LIGHTING COOLING
CONVENTIONAL 22,000 6,000 8,000 1,000 2,000
R-2000 14,000 5,000 6,000 1,000 500
ADVANCED HOUSE 7,000 2,500 3,500 500 500
SPACE WATER
APPLIANCES LIGHTING COOLING
ALSTONVALE
HEATING HEATING 3,400 150 3,000 365 0
ALSTONVALE (kWh) 3,400 150 3,000 365 0
40,000 kWh
5%
30,000
49%
43% 20,000
2% 10,000
0
AlstonvaleConventionalHouse:R-2000 use
Net Zero energy Advanced House
Alstonvale
Energy Consumption - without PV

35. PELLET
SOLAR BOILER
ALSTONVALE (kWh) 6,745 571
SPACE WATER
HEATING HEATING APPLIANCES LIGHTING COOLING
CONVENTIONAL 22,000 6,000 8,000 1,000 2,000
R-2000 14,000 5,000 6,000 1,000 500
8%
ADVANCED HOUSE 7,000 2,500 3,500 500 500
SPACE WATER
APPLIANCES LIGHTING COOLING
ALSTONVALE
HEATING HEATING 3,400 150 3,000 365 0
ALSTONVALE (kWh) 3,400 150 3,000 365 0
40,000 kWh
5%
30,000
92%
49%
43% 20,000
Alstonvale Net Zero House: energy source
2% 10,000
0
AlstonvaleConventionalHouse:R-2000 use
Net Zero energy Advanced House
Alstonvale
Energy Consumption - without PV

36. Path to Net Zero
1. REDUCE ENERGY REQUIREMENT
a) High-performance building envelope
b) Reduce demand loads
c) Passive heating and passive cooling
2. GENERATE ENERGY TO REACH NET ZERO
a) Active systems using renewable resources

37. Path to Net Zero
Optimization
Integration

38. Project Schedule
October 2007: Finalize financing
November 2007 - May 2008: Construction
May 2008 - November 2008: Open house
November 2008: Auberge Alstonvale
December 2008 - December 2009: Monitoring

39. Pro Forma Project Costs
Cost / sq.m. Cost / sq.ft
(total area) (total area)
Land Cost
Soft Costs $32,500 $129 $12
Hard Costs $390,000 $1,554 $144
TOTAL $422,500 $1,683 $156
Before GST and QST

40. Incremental Cost of Net Zero
PV Array & mounting System $63,500
Solar thermal for DHW $5,000
Windows $5,000
Insulation $5,000
HVAC equipment $5,000
TOTAL $83,500 $30 / sq ft
Before GST and QST

41. Payback Period

42. ALSTONVALE NET ZERO HOUSE CONVENTIONAL HOUSE
ADDITIONAL ADDITIONAL ADDITIONAL ADDITIONAL
YEAR INITIAL COST ANNUAL COSTS GAIN AT SALE SUBTOTAL YEAR INITIAL COST ANNUAL COSTS GAIN AT SALE SUBTOTAL
0 $85,000 ($85,000) 0 $0 $0
1 $144 ($144) 1 $2,500 ($2,500)
2 $147 ($147) 2 $2,675 ($2,675)
3 $150 ($150) 3 $2,862 ($2,862)
4 $153 ($153) 4 $3,063 ($3,063)
5 $156 ($156) 5 $3,277 ($3,277)
6 $159 ($159) 6 $3,506 ($3,506)
7 $162 ($162) 7 $3,752 ($3,752)
8 $165 ($165) 8 $4,014 ($4,014)
9 $169 ($169) 9 $4,295 ($4,295)
10 $172 ($172) 10 $4,596 ($4,596)
11 $176 ($176) 11 $4,918 ($4,918)
12 $179 ($179) 12 $5,262 ($5,262)
13 $183 ($183) 13 $5,630 ($5,630)
14 $186 ($186) 14 $6,025 ($6,025)
15 $190 ($190) 15 $6,446 ($6,446)
16 $194 ($194) 16 $6,898 ($6,898)
17 $198 ($198) 17 $7,380 ($7,380)
18 $202 ($202) 18 $7,897 ($7,897)
19 $206 ($206) 19 $8,450 ($8,450)
20 $210 ($210) 20 $9,041 ($9,041)
21 $214 ($214) 21 $9,674 ($9,674)
22 $218 ($218) 22 $10,351 ($10,351)
23 $223 ($223) 23 $11,076 ($11,076)
24 $227 ($227) 24 $11,851 ($11,851)
25 $232 $175,000 $174,768 25 $12,681 $0 ($12,681)
Additional initial cost: $85,000 Additional initial cost: $0
Additional gain at sale: $175,000 Additional gain at sale: $0
Starting annual grid-tie fee: $144 Starting annual energy cost: $2,500
Grid-tie fee escalator: 2.0% Energy cost escalator: 7.0%
NPV discount rate: 7.0% NPV discount rate: 7.0%
NPV: ($51,183.02) NPV: ($54,589.92)

43. ALSTONVALE NET ZERO HOUSE CONVENTIONAL HOUSE
ADDITIONAL ADDITIONAL ADDITIONAL ADDITIONAL
YEAR INITIAL COST ANNUAL COSTS GAIN AT SALE SUBTOTAL YEAR INITIAL COST ANNUAL COSTS GAIN AT SALE SUBTOTAL
0 $85,000 ($85,000) 0 $0 $0
1 $144 ($144) 1 $2,500 ($2,500)
2 $147 ($147) 2 $2,675 ($2,675)
3 $150 ($150) 3 $2,862 ($2,862)
4 $153 ($153) 4 $3,063 ($3,063)
5 $156 ($156) 5 $3,277 ($3,277)
6 $159 ($159) 6 $3,506 ($3,506)
7 $162 ($162) 7 $3,752 ($3,752)
8 $165 ($165) 8 $4,014 ($4,014)
9 $169 ($169) 9 $4,295 ($4,295)
10 $172 $115,000 $114,828 10 $4,596 $0 ($4,596)
Additional initial cost: $85,000 Additional initial cost: $0
Additional gain at sale: $115,000 Additional gain at sale: $0
Starting annual grid-tie fee: $144 Starting annual energy cost: $2,500
Grid-tie fee escalator: 2.0% Energy cost escalator: 7.0%
NPV discount rate: 7.0% NPV discount rate: 7.0%
NPV: ($25,827.26) NPV: ($21,835.97)

44. Net Present Value
NPV of the Alstonvale Net Zero House & a conventional
house are similar under these assumptions
This analysis quantifies only out-of-pocket expenses
What about environmental externalities?

45. Hurdles
GST & QST rebates
Municipal regulators
Resident’s Associations
Construction financing
Buyer’s mortgage
Buyer’s home insurance