Average screen size of televisions sold in New Zealand

Star rating: lets consumers easily compare the energy efficiency of similar models. The more stars, the more energy efficient.
Sales weighted: the average weighted proportionally to the sales of units.

Annual energy consumption is assuming an average of 10 hours of usage per day.
The average is sales-weighted, which means it depends on the energy efficiency of units that were actually sold.

https://www.eeca.govt.nz/standards-ratings-and-labels/equipment-energy-efficiency-programme/about-the-e3-programme/

Star rating calculations are inconsistent across different years.

At URL provided, select the '2023 Televisions sales and efficiency data' Excel file.
This spreadsheet was reformatted for easier processing.

Through the Equipment Energy Efficiency (E3) Programme, New Zealand and Australia develop common energy efficiency measures to regulate the energy performance of products in both countries.
Suppliers of products regulated under the E3 Programme provide Energy Efficiency and Conservation Authority with annual sales data for the period of 1 April to 31 March. This is used to help measure the shift in product efficiency over time and to calculate the energy savings to date from these improvements in energy efficiency.

The Equipment Energy Efficiency Programme is run by the Commonwealth state and territory and New Zealand governments working with industry to drive improvements in the energy efficiency of appliances and equipment to save households and businesses money on their energy bills reduce energy use and reduce emissions.

The measures developed through the E3 Programme are minimum energy performance standards (MEPS) and the Energy Rating Label.