Corporate greenhouse gas emissions reporting continues to evolve at a rapid pace.   

As we celebrate the New Year, it's important to take the opportunity to reflect on the highlights of 2010 and their impact on this market.

Many of the changes are healthy as sustainability and emissions reporting moves away from "feel good" disclosures towards risk identification and competitive advantage. 

Here is my list of the top 10 Carbon Reporting Trends in 2010:

1. Supplier Evaluations on Sustainability Become Mainstream   

Led by large organizations such as Bank of America, Proctor and Gamble, Tesco, and Walmart, and often starting initially with tier one suppliers, surveys of suppliers' carbon footprint and efforts to reduce carbon, energy and waste are now pervasive. Environmental performance has been elevated to a standard item now on many supplier evaluation forms and RFPs. Senior executives ignore this trend to their peril.

2. Climate Regulation is Mostly Dead, Except for the U.K., California and the U.S. EPA

In general, the recession, lobbying and a lack of public support has stopped most climate regulation. No global accords were reached in Copenhagen in 2009 and the 2010 climate meetings in Cancun were a non-event. Governments raided funds raised by RGGI and the Carbon Reduction Commitment to meet general fund deficits, and in other countries implementations of carbon regulations were delayed. The European cap-and-trade program faces fraud allegations.  

In short, there is very little momentum for climate regulation in the world today. The State of California is a large exception: Voters confirmed support for moving forward with a regional cap-and-trade in 2012, but watch its implementation as the state struggles with high unemployment and massive budget deficits. 

The U.S. Environmental Protection Agency continues to move forward with direct carbon dioxide (CO2) regulation, but some experts predict implementation delays as the regulations are challenged in the courts. Sustainability leaders and EHS professionals need to ensure their largest facilities that meet facility-level thresholds for regulation are compliant, but the trend towards extensive carbon regulation is over for the foreseeable future.

3. Two Pioneering Voluntary Climate Initiatives Cease

Despite widespread support and success, the U.S. EPA abruptly began winding down its Climate Leaders program. The Chicago Climate Exchange, a pioneering effort to voluntarily trade carbon, announced the cessation of trading in late 2010. Despite these early efforts ending, the Carbon Disclosure Project program continues to grow, supported in part by Walmart and other large companies.   

4. SEC Issues Guidance for Reporting Climate Risk

In February, the U.S. Securities and Exchange Commission issued guidance for publicly traded companies to report climate risk in official financial statements, such as 10-Ks or annual reports. This action amplifies the importance of calculating a company's carbon footprint and assessing its climate risk. Look for more disclosure requirements from investors and insurance companies in the years ahead.

5. Scope 3 Standards are Here!

After years of work and testing, the World Resources Institute and World Business Council for Sustainable Development have nearly finalized internationally recognized standards for calculating the indirect or so-called Scope 3 emissions of companies and products. The WRI/WBCSD standards for Scope 1 and 2 emissions are well accepted, and hopefully these new Scope 3 standards will become a global standard as well. Understanding Scope 3 emissions is essential for identifying a company's largest "carbon hot spots" and to assist in the prioritization of efforts and investments. Sustainability leaders should monitor Scope 3 case studies and determine if the benefits merit the cost of data collection.