The energy issue is of paramount importance, considering that we use electrical energy throughout the construction process to operate machines, equipment, cranes and racks. In a year marked by successive increases in the price of electricity supplied by the concessionaires, we set several goals to reduce consumption in the physical progress of the construction works.
Starting in 2022, we plan to include energy supply from alternative sources not to depend 100% on concessionaires. We set consumption targets for each step of the work and carry out simulations, projects, and memorials for the electrical connections in all units and common areas.
| 2019 | 2020 | 2021 | ∆2020/2021 | |
|---|---|---|---|---|
| Non-renewable sources | 10,668.20 | 8,972.88 | 15,224.34 | 69.67% |
| Diesel | 227.20 | 8.88 | 239.34 | 2595.27% |
| Natural gas (LGP) | 10,441.00 | 8,964.00 | 14,985.00 | 67.17% |
| Renewable sources | 0.00 | 0.00 | 0.00 | 0.00% |
| Consumption | 1,408,216.58 | 667,042.67 | 1,319,745.49 | 97.85% |
| Concessionaire electricity - Construction works | 1,257,499.58 | 438,816.67 | 1,030,016.49 | 134.73% |
| Concessionaire electricity - Office | 150,717 | 228,226 | 289,729 | 26.95% |
| Sale | 0.00 | 0.00 | 0.00 | 0.00% |
| Total | 1,418,884.78 | 676,015.55 | 1,334,969.83 | 97.48% |
Note: The oscillation in the energy consumption of the works comes from the typology/phase of work. In 2020, the reduction in consumption came from the lack of reading carried out in the works by the concessionaire.
The use of diesel is directly linked to the type of foundation used in the works, which is why in 2020, the volume was well below that of other years.
| Item | 2019 | 2020 | 2021 |
|---|---|---|---|
| Index (KWh/m²) | 10.19 | 6.07 | 5.74 |
| Works | 11 | 11 | 15 |
Within our catalog of approved luminaires for common areas, we favor the use of LEDs and timers — we do not deliver luminaires to the units, but we recommend using low-consumption lamps. We performed many simulations to assess issues of transmittance and luminance and ensure greater energy power to provide more comfort to users (larger frames, which favor sunlight, roller blinds, etc.). To improve the lighting performance of the apartments, three different studies were carried out, with the following results:
The studies showed that the proposal met the requirement 13.2-Natural Lighting of the performance standard and was adopted in all developments, especially the Arbo building, in Alto de Pinheiros, measured for the EDGE seal.
In 2021, we changed our methodology regarding the Energy Consumption Reduction Goals to monitor consumption according to the physical progress of the construction works. Until 2020, monitoring was carried out according to the goal by area in progress and by phase (Foundation, Structure and Finishes), with the possibility of overconsumption regarding over one step of work.
We obtained more assertiveness with the new system by breaking down consumption by the monthly percentage of physical progress. Our developments are within the ABNT NBR 15575:2013 standard requirements, referring to the natural lighting conditions inside our housing units.
The Quality area ensures that 90% of the construction works meet water and energy targets. To this end, we are monitoring any unforeseen losses, overconsumption and additional fees issued by the concessionaires. In the last three years, our consumption reduction targets have evolved as follows:
2019
2020
2021
