Technology giant Apple and its suppliers reduced 13,800 metric tonnes of carbon emissions in 2015.

In its ‘Supplier Responsibility  2016 Progress Report’, the firm claims its energy efficiency programme helped achieve those reductions.

Some of the improvements the firm and its suppliers made were replacing outdated and inefficient heating, cooling and lighting systems, repairing compressed air leaks and recovering and redirecting waste heat.

The company also diverted more than 73,700 metric tonnes of waste from landfill by recycling.

Apple adds it saved 3.8 billion gallons of freshwater last year through baseline assessments, performance evaluations, technical support, supplier training and increasing reuse and recycling of treated wastewater.

Jeff Williams, Apple’s Chief Operating Officer said: “We aren’t just helping suppliers become more efficient — our Clean Energy Programme is supporting them in powering their facilities with renewable energy sources and our Environment, Health, and Safety (EHS) Academy participants have launched more than 2400 EHS projects since 2013.”

Last year, the company launched two clean energy programmes in China to help reduce more than 20 million metric tonnes of greenhouse gas emissions by 2020.