Global retailer Walmart has reduced energy use by up to 1.2 billion KWh in consumer homes owing to a partnership with GE over the past two years.

The two have under the Gigaton initiative converted Walmart shoppers from traditional light bulbs to energy efficient LED users.

Collectively, the LEDs are expected to help consumers to save $2 billion.

Gigaton aims to reduce the retailer’s greenhouse gas emissions by 1 Gigaton by 2030. In its own operations, Walmart has set a target to reduce emissions by 18% by 2025.

The retailer has to date installed 1.5 million LED fixtures across 6000 stores, facilities and offices in 10 countries.

This has helped the firm to reduce its energy costs by more than $100 million over the past decade.

The LEDs use 70 to 90% less energy than traditional lights and last 15 to 25 times longer.

Daraius Patell, North American consumer leader, GE Lighting. “Today LEDs are available for every socket in every room of the home, and while LEDs now eclipse sales of all other technologies combined, about 70% of residential lighting sockets still contain a non-LED bulb. This means consumers are missing out on the energy-savings and long-life of LEDs, changing bulbs out more than they need to be and missing out on opportunities to reduce greenhouse gas emissions.”