Home Depot's very green report card

The Home Depot has exceeded its energy and carbon emissions goals for 2015, and it did so by a significant amount.

According to the retailer's 2015 Sustainability Report, the company reduced its supply chain carbon emissions by 35% over 2008 levels. The original goal set in 2010 was to reduce emissions by 20%.

The company's stores have also reduced energy use by 30% over 2004 levels -- a savings of more than 8 billion kilowatts over 10 years. Likewise, the goal set in 2010 was a reduction of 20%.

Home Depot also set two new goals for 2020: a reduction of total energy use by an additional 20% below 2010 levels, and to procure 135 MW of electricity from a combination of onsite fuel cell and solar installs as well as offsite solar and wind developments.

In 2015, Home Depot was also rated by the CDP as an S&P Climate Disclosure Leader on its annual CDL Index with a score of 99 out of 100.

Additionally, it was awarded the SmartWay Transport Excellence Award, Energy Star Partner of the Year - Sustained Excellence, and WaterSense Sustained Excellence Award.