Appendix C: Intervention Assumptions
Residential Refrigeration
• Program definition: Accelerate substitution of old residential refrigerators in Mexico • Project duration: 30 years • Applicable distribution loss factor: Secondary low voltage Without project assumptions • Energy consumption: 0.850 MWh/year (older refrigerators have higher consumption, of about 1.050 MWh/year, but a large number comply with the 1996 standard) With project assumptions • Energy consumption: 0.369 MWh/year • Cost of new 9ft³ refrigerator: $203 (based on market survey) • Refrigerator lifetime: 15 years Program assumptions • Refrigerators to be substituted by program: 10 million refrigerators (based on INEGI data) • Number of years to achieve target: 5 • Number of years for substitution in the baseline scenario: 20 Solar Water Heating
• Program definition: Install by 2030 solar water heaters in 60 percent of existing (2009) households and 65 percent of new households • Project duration: 22 years Assumptions for new and existing households • Hot water consumption: 75 l/day/person • Household occupancy: 4 people/household (CONAPO 2006) • Required temperature increase: 25°C • Size of solar water heater: 4 m² • Lifetime: 22 years • Solar radiation: 18 MJ/day/m² (PROCALSOL 2007) • Solar water heater efficiency: 50 percent • Gas water heater efficiency: 60 percent • In households with solar water heating, gas is used as a backup to supply 10 percent of water heating energy needs Assumptions for existing households • Cost of solar water heater: $1,050 • Installation cost: $262 Program assumptions • Number of households in 2009: 27.5 million • Share of 2009 households that will have water heating (of any kind) in 2030: 60 percent; out of this set of households, those that will have solar water heater in 2030 are in – baseline: 1 percent – intervention: 60 percent
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