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Appendix A - Descriptions of Residential Energy Efficiency Measures
92
Low-Income Homes were also included in this analysis. Low-Income homes
receive 100% incentive for the cost of the measures, and qualify based on
income. Eligible households must meet federal poverty level guidelines.
Table A-27 –Sample R-value upgrades for Weatherization/Insulation Program
Measures
Base Home Upgraded Home
Attic insulation R-19 Attic insulation to R-38
Wall insulation R-0 Wall insulation to R-13
Floor insulation R-0 Floor insulation to R-19
Air infiltration to .75 ACH Reduced air infiltration to .50 ACH
Measure savings – Energy savings for the addition of insulation will depend
upon change in R-Value between the insulation that already exists and what is
being added. Savings are calculated based upon this change in R-value, the
heating-degree-days (HDD) at the project’s location and the square footage of
the area to be insulated. In a typical house in North Carolina, the weatherization/
insulation program would save an average of 7,500 kWh annually in single-family
houses, and 3,750 kWh annually in multi-family houses.167 Low income housing
would also benefit from insulation/weatherization measures. A low income single
family house would save an average of 3431kWh per year.168
Measure incremental cost – The incremental cost of all measures combined for
non low income weatherization measures is approximately $1,558 for single
family homes and $779 for multi family homes.169 Additionally, it is approximately
$1,430 for low income home weatherization assistance.170
Measure useful life – The useful life of building shell measures are typically 20
years.171
Estimated baseline saturation in North Carolina – Approximately 50% of non
low-income homes in North Carolina with electric heating have been properly
insulated and weatherized.172 Nearly 50% of low-income homes have also been
167 Energy10 Model Simulations. Completed in 2005 by GDS for the development of an Integrated
Resource Plan for the Big Rivers Electric Cooperative in Kentucky. The measure savings have been
adjusted for interactive effects.
168 “Meeting the Challenge: The Prospect of Achieving 30% Energy Savings Through the
Weatherization Assistance Program. ORNL 2002. Table 8.
169 Energy10 Model Simulations. Completed in 2005 by GDS for the development of an Integrated
Resource Plan for the Big Rivers Electric Cooperative in Kentucky. The measure savings have been.
170 “Meeting the Challenge: The Prospect of Achieving 30% Energy Savings Through the
Weatherization Assistance Program. ORNL 2002. Table 8.
171 GDS calculation based on useful life of insulation/weatherization individual measures.
172 GDS estimate
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| Title | A study of the feasibility of energy efficiency as an eligible resource as part of a renewable portfolio standard for the state of North Carolina : report for the North Carolina Utilities Commission - Page 95 |
| Full Text | Appendix A - Descriptions of Residential Energy Efficiency Measures 92 Low-Income Homes were also included in this analysis. Low-Income homes receive 100% incentive for the cost of the measures, and qualify based on income. Eligible households must meet federal poverty level guidelines. Table A-27 –Sample R-value upgrades for Weatherization/Insulation Program Measures Base Home Upgraded Home Attic insulation R-19 Attic insulation to R-38 Wall insulation R-0 Wall insulation to R-13 Floor insulation R-0 Floor insulation to R-19 Air infiltration to .75 ACH Reduced air infiltration to .50 ACH Measure savings – Energy savings for the addition of insulation will depend upon change in R-Value between the insulation that already exists and what is being added. Savings are calculated based upon this change in R-value, the heating-degree-days (HDD) at the project’s location and the square footage of the area to be insulated. In a typical house in North Carolina, the weatherization/ insulation program would save an average of 7,500 kWh annually in single-family houses, and 3,750 kWh annually in multi-family houses.167 Low income housing would also benefit from insulation/weatherization measures. A low income single family house would save an average of 3431kWh per year.168 Measure incremental cost – The incremental cost of all measures combined for non low income weatherization measures is approximately $1,558 for single family homes and $779 for multi family homes.169 Additionally, it is approximately $1,430 for low income home weatherization assistance.170 Measure useful life – The useful life of building shell measures are typically 20 years.171 Estimated baseline saturation in North Carolina – Approximately 50% of non low-income homes in North Carolina with electric heating have been properly insulated and weatherized.172 Nearly 50% of low-income homes have also been 167 Energy10 Model Simulations. Completed in 2005 by GDS for the development of an Integrated Resource Plan for the Big Rivers Electric Cooperative in Kentucky. The measure savings have been adjusted for interactive effects. 168 “Meeting the Challenge: The Prospect of Achieving 30% Energy Savings Through the Weatherization Assistance Program. ORNL 2002. Table 8. 169 Energy10 Model Simulations. Completed in 2005 by GDS for the development of an Integrated Resource Plan for the Big Rivers Electric Cooperative in Kentucky. The measure savings have been. 170 “Meeting the Challenge: The Prospect of Achieving 30% Energy Savings Through the Weatherization Assistance Program. ORNL 2002. Table 8. 171 GDS calculation based on useful life of insulation/weatherization individual measures. 172 GDS estimate |
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