Amazon has been buying renewable power at a rapid clip over the past year, adding about 100 new projects and expanding its portfolio to more than 33 gigawatts of generating capacity. More than 10 gigawatts more than its nearest competitor, Apple.

The additions make Amazon the largest corporate purchaser of renewable power, according to BloombergNEF. The company’s overall portfolio is split almost equally between utility-scale wind and solar farms and on-site solar power projects. In total, it’s enough to power 8.3 million homes, Amazon said.

Amazon’s renewable and storage contracts allow it to reduce emissions from purchased electricity, called Scope 2 emissions, although it increases the data centers.

However, the company has a long way to go to eliminate its carbon footprint. Like many companies, the majority of Amazon’s emissions come from Scope 3, which covers activities over which it has less control. That includes costs such as air travel, rented buildings, and building construction.

According to Amazon’s 2023 progress reporttotal emissions peaked in 2021 after a long rise for several years. Its carbon intensity – a measure of greenhouse gas emissions divided by gross sales – is also declining. (Carbon intensity is a metric favored by fast-growing organizations, because they tend to consume more fossil fuels as they grow. positive story.)

Amazon has yet to release its 2024 sustainability report, which would provide a more complete picture of the company’s progress toward its 2040 net zero goal.