Pilio uses information from the energy efficiency performance line (i.e. the kWh per degree day) and then multiplies by the 20-year-average weather of your local weather station to estimate the heating energy consumption of your building for the year ahead. This is then added to the baseload of your building to get the total energy consumption (also obtained from the performance line calculation). Once the total consumption estimate has been worked out, the energy bill is calculated by simply multiplying this by the tariff details entered for your building.

The carbon emissions are calculated in a similar way – by taking the total consumption and multiplying it by a conversion factor to estimate the total emissions. How accurate Pilio is on calculating the consumption, spend and emissions of your building depends on how good the efficiency performance line is. If your building has a high correlation between weather and energy consumption (i.e. an r-value of greater than 0.95) and if the total number of degrees for the year are close to the average, then the expected use in Pilio will be accurate. If there is a higher variation than the expected use, Pilio will be less reliable.