# Accommodation - September 2024 Updates

The research team at SQUAKE has integrated several new data sources and findings into their methodology for calculating carbon emissions in vacation rentals:

1. **Electricity Data**: Updated information on carbon intensity and electricity generation per capita has been incorporated. These updates were sourced from the [Our World in Data platform](https://ourworldindata.org/grapher/carbon-intensity-electricity?time=latest), focusing on the latest insights into carbon intensity of electricity generation and per capita electricity production.
2. **Water Data**: New data concerning water usage has been obtained from [Worldometer](https://www.worldometers.info/water/), with updated emissions factors derived from recent research, specifically the [*Operational carbon footprint of the U.S. water and wastewater sector’s energy consumption*](https://www.sciencedirect.com/science/article/pii/S0959652621030110) study published in the *Journal of Cleaner Production*.
3. **Heating Factors**: The methodology now includes recently published data on heating consumption per square meter in households, provided by the [Odyssee-Mure Project](https://www.odyssee-mure.eu/publications/efficiency-by-sector/households/heating-consumption-per-m2.html). This inclusion enhances the accuracy of heating-related carbon emission calculations.
4. **Housing Size - Square Meters**: Recent data on average housing sizes by country has been incorporated, sourced from the [World Population Review](https://worldpopulationreview.com/country-rankings/house-size-by-country). This data provides more precise inputs for calculating carbon emissions based on accommodation area.
5. **Household Size - Number of People**: The [Global Data Lab](https://globaldatalab.org/areadata/table/hhsize/) latest findings on average household sizes have been added to the methodology. This ensures that carbon emission estimates more accurately reflect real-world conditions by accounting for variations in the number of occupants in vacation rentals.