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Assumptions:
4 Hours of use per 365 days for Compact Fluorescent Lamps (CFL), Halogen and Incandescent lamps
2 Hours of use per 365 days for T8 and T5
Emission factor 198.4 g CO2e/kWh (EEA,2020)
| CFL | LED | Halogen | LED | T8 | LED | T5 | LED | INC | LED | |
|---|---|---|---|---|---|---|---|---|---|---|
| Power (W) | 14 | 6 | 15 | 3 | 36 | 18 | 14 | 8 | 25 | 3,5 |
| Number of bulbs | 4 | 4 | 4 | 4 | 2 | 2 | 1 | 1 | 4 | 4 |
| Hours of use | 1460 | 1460 | 1460 | 1460 | 730 | 730 | 730 | 730 | 1460 | 1460 |
| Consumption (kWh/year) | 81,76 | 35,04 | 87,6 | 17,52 | 52,56 | 26,28 | 10,22 | 5,84 | 146 | 20,44 |
| GHG emissions (kgCO2e/year) | 16,22 | 6,95 | 17,38 | 3,48 | 10,43 | 5,21 | 2,03 | 1,16 | 28,97 | 4,06 |
| Reduction | -57% | -80% | -50% | -43% | -86% |
Note: Predominance of light bulbs: ICESD 2010 and 2020
Assumptions:
Considering that 24.1% of electricity consumption is used for air conditioning (heating and cooling)
Emission factor 198.4 g CO2e/kWh (EEA,2020)
Assumptions:
Average of 3 people per room
Average consumption per dwelling 3 360 kWh/dwelling
Deployment area of 8 m2
Considering 4 photovoltaic modules of 450 W (1.60 kWp)
Emission factor 198.4 g CO2e/kWh (EEA,2020)
Assumptions:
Housing for 4 people
Need for water heating – 60 L/inhab/day (at a temperature of 45 °C – approximately 2750.20 kwh/year
2 South-facing collectors with a 35º inclination (panel with a 4.0 m2 opening)
Emission factor 198.4 g CO2e/kWh (EEA,2020)
The economy’s carbon intensity indicator results from the ratio between total CO 2 emissions and the Gross Domestic Product (GDP), thus making it possible to quantify the relationship between greenhouse gas emissions associated with obtaining all the goods and services produced. The indicator depends on the energy mix and energy intensity, and as such, the lower the indicator, the lower the use of fossil fuels in the energy mix. Portugal has seen a reduction over the years, driven by the reduction of coal for electricity production and the strong growth in investment in renewable energies.
Assumptions:
4 Hours of use per 365 days for Compact Fluorescent Lamps (CFL), Halogen and Incandescent lamps
2 Hours of use per 365 days for T8 and T5
Emission factor 198.4 g CO2e/kWh (EEA,2020)
| CFL | LED | Halogen | LED | T8 | LED | T5 | LED | INC | LED | |
|---|---|---|---|---|---|---|---|---|---|---|
| Power (W) | 14 | 6 | 15 | 3 | 36 | 18 | 14 | 8 | 25 | 3,5 |
| Number of bulbs | 4 | 4 | 4 | 4 | 2 | 2 | 1 | 1 | 4 | 4 |
| Hours of use | 1460 | 1460 | 1460 | 1460 | 730 | 730 | 730 | 730 | 1460 | 1460 |
| Consumption (kWh/year) | 81,76 | 35,04 | 87,6 | 17,52 | 52,56 | 26,28 | 10,22 | 5,84 | 146 | 20,44 |
| GHG emissions (kgCO2e/year) | 16,22 | 6,95 | 17,38 | 3,48 | 10,43 | 5,21 | 2,03 | 1,16 | 28,97 | 4,06 |
| Reduction | -57% | -80% | -50% | -43% | -86% |
Note: Predominance of light bulbs: ICESD 2010 and 2020
Assumptions:
Considering that 24.1% of electricity consumption is used for air conditioning (heating and cooling)
Emission factor 198.4 g CO2e/kWh (EEA,2020)
Assumptions:
Average of 3 people per room
Average consumption per dwelling 3 360 kWh/dwelling
Deployment area of 8 m2
Considering 4 photovoltaic modules of 450 W (1.60 kWp)
Emission factor 198.4 g CO2e/kWh (EEA,2020)
Assumptions:
Housing for 4 people
Need for water heating – 60 L/inhab/day (at a temperature of 45 °C – approximately 2750.20 kwh/year
2 South-facing collectors with a 35º inclination (panel with a 4.0 m2 opening)
Emission factor 198.4 g CO2e/kWh (EEA,2020)