| Model | Number of Observations | R-Square | Root Mean Square Error | Probability > F-statistic, Confidence Interval = 95%, | |
| 1 | 40 | 0.988 | 0.420 | 0.000 | |
| Model | Coefficients | Standard. error | t-statistic | Significance (p > |t|) | |
| 1 | Use of innovative technologies and infrastructure | 0.242 | 0.059 | 4.12 | 0.00 |
| Use of efficient zero emissions for heating and cooling | 0.219 | 0.051 | 4.30 | 0.00 | |
| Integrating renewable energy use in the existing buildings | 0.138 | 0.058 | 2.37 | 0.00 | |
| Building and renovating in an energy efficient way | 0.340 | 0.045 | 7.56 | 0.00 | |