On-Grid Country Lighting Assessment Methodology

The on-grid lighting model estimates the installed stock by two independent methods, one based on lamp shipments and one based on electricity consumption for lighting. These two approaches are averaged together to arrive at an estimate of the installed stock in each country.  National data such as electricity prices and lamp prices are then used to estimate the payback period and national financial benefits. The power generation mix for a country is used to calculate the CO2 savings and other air quality benefits associated with the transition to energy-efficient lighting. More detailed information for the on-grid Country Lighting Assessments can be found here.