How we calculate our metrics
We strive to be transparent and honest with the metrics that we share on our website.
Calculation for GWh of energy generated
The amount of solar energy generated in one year by Brighte-funded solar Photovoltaics (PV) installations was calculated using the formula below.
The average daily # of peak sunlight hours was sourced from the US National Renewable Energy Laboratory and based on satellite data. The calculation has the following assumptions:
- The PV systems don't degrade over time and are working at their full potential in the peak sunlight hours for each state (e.g. there is no shading and no other losses on their specifications), for the full 1 year of generation;
- Inverter, grid transport and other losses are not factored in.
Calculation for CO2e emissions prevented
The amount of CO2-equivalent emissions offset in one year by Brighte-funded solar Photovoltaics (PV) installations was calculated using the formula below.
The energy generated by the installations was calculated using our "Calculation for GWh of energy generated". This amount of energy was converted to CO2-equivalent emissions offset by multiplying by an emission intensity factor sources from the latest data from the Australian Clean Energy Regulator (CER). CO2-equivalent emissions are all green house gas emissions (e.g. carbon dioxide, methane, nitrous oxide) converted to CO2 mass, hence "equivalent" to CO2 emissions.