Page 2002 - Week 05 - Thursday, 5 May 2011
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10. Table – Energy Efficiency Products Attachment A.
Carbon Dioxide Abatement, Capital Costs and Savings by product:
Table 1 — Hot Water Systems
*All dwelling types assumed to be 3-4 bed separate dwelling, brick veneer and concrete slab
|
Product |
Capital Cost |
tCO2 pa Output |
tCO2 Saved (1) |
Capital Cost per Tonne of CO2 saved |
Net annual saving |
|
Solar HWS – electric boost (315L) (2) |
$3720 |
1.16 |
3.06 |
$1216 |
$305 |
|
Solar HWS – gas boost (315L) (3) |
$5053 |
0.39 |
3.86 |
$1309 |
$107 ($334 - $227*) |
|
Solar HWS – gas boost (315L) (4) |
$5553 |
0.39 |
3.86 |
$1439 |
$107 ($334 - $227*) |
|
Gas HWS – 5 Star Instantaneous (3) |
$1694 |
1.28 |
2.94 |
$576 |
- $52 ($175 - $227*) |
|
Gas HWS – 5 Star Instantaneous (4) |
$2194 |
1.28 |
2.94 |
$746 |
- $52 ($175 - $227*) |
|
Gas HWS – 5 Star Storage (170L) (3) |
$1687 |
1.37 |
2.85 |
$592 |
- $87 ($140 -$227*) |
|
Gas HWS – 5 Star Storage (170L) (4) |
$2187 |
1.37 |
2.85 |
$767 |
- $87 ($140 -$227*) |
|
Heat Pump HWS (5) |
$2755 |
1.45 |
2.77 |
$995 |
$276 |
(1) Compared to standard tariff electric resistive HWS (3-4BR = 4.22 tCO2 pa)
(2) Converting from standard tariff electric resistive HWS
(3) Converting from standard tariff if gas already connected and usage behaviour remains consistent
(4) Converting from standard tariff If gas is not already connected (assuming $500 connection fee)
(5) However constant performance questionable
* Current ACTEWAGL gas supply fee is $56.859 per quarter ($227 pa). If gas is already connected the saving to the client’s current bill would be the first figure in the brackets.
Table 2 — Building Shell Improvements
*All dwelling types assumed to be 150m2, 3-4 bed separate dwelling, brick veneer and concrete slab
** All the below figures provided are approximate and representative figures only
|
Product |
Capital Cost |
Change in Heating Load (MJ/m2/year) |
tCO2 Saved per year |
Capital Cost per Tonne of CO2 saved (assuming heating type is gas) |
Net annual saving to client (assuming gas is already connected) (2) |
|
Wall insulation R0 to R2.5 cavity injection |
$3500 |
-65 |
0.62 |
$5645 |
$50-100 |
|
Ceiling insulation R0 to R3.5 (3) |
$1300 |
-450 |
4.3 |
$302 |
$200-400 |
|
Ceiling insulation R3.5 to R6.0 |
$600 |
-20 |
0.19 |
$3157 |
$30-70 |
|
Secondary Double Glazing – Entire House (1) |
$8000 |
-70 |
0.67 |
$11940 |
$50-100 |
|
Draught Sealing (1) |
$500 |
-55 |
0.52 |
$961 |
$40-80 |
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