The most prominent forms of Environmental Attributes or Environmental Commodities are associated with reducing carbon emissions, generating renewable energy, improved energy efficiency, reducing water consumption, or even preserving entire ecosystems.
Environmental commodities are not physical assets, per se, which makes them different from corn and cotton and scores of other products that are traded on commodity markets. Environmental commodities are intangible; however, they do have real value, and can be bought and sold.
A carbon offset represents a reduction of one metric ton of greenhouse gas emissions – measured as one ton of carbon dioxide gas removed from the atmosphere in one year. Carbon offsets are known by of other names such as verified emission reductions (VER’s), and certified emission reductions (CER’s), but they are all measured the same way, and are mostly related to a specific project that caused a reduction in the emission of greenhouse gas (GHG).
Renewable energy certificates (REC’s) represent 1 MWh of power generated by renewable resource. Run of the river, solar, and wind power are among the types of renewable energy projects that can generate REC’s. Sometimes REC’s are also called green tags. Energy efficiency credits, also referred to as white tags, represent 1 MWh of power that’s been conserved.
In a similar way, 1 L of water preserved in one year represent a unit of water offset. New markets for carbon offsets are developing all the time. First generation offsets have been traded, and now there is a growing interest in full ecosystem offsets. These non-physical assets would be classified under the heading of environmental attributes or environmental commodities. The worldwide market for these informal commodities is now estimated to be $1 trillion in value.
Environmental attributes are increasingly being associated with the new ecosystems services marketplace. Natural ecosystems can benefit people through multitude of processes that they supplied, and collectively these benefits are known as “ecosystem services”. For example, benefits like clean drinking water, clean air, decomposition of wastes, and pollination of crops are all ecosystem services that are provided to us. In 2004 the UN millennium ecosystem assessment (a four year study involving 1300 scientists) grouped ecosystems services into four categories:
- Provisioning (such as the production of food and water);
- Regulating (such as the controlled climate);
- Supporting (such as crop pollination and nutrient cycles); and,
- Cultural (such as spiritual and recreational benefits).
Unfortunately, on their own, ecosystem services do not have any financial value. Environmental attributes can place a value on the services provided by ecosystems. For example, most trees only have value if they are somehow processed into paper lumber or other cellulosic products. Conservation forestry carbon offsets provided value to landholders who are willing change their behavior and provide more net trees on a given piece of land that would normally be the case. In this way the environmental attribute is used as a mechanism to pay the landholder for the valuable ecosystem service provided by additional trees on their property. The trees, of course, are sequestering carbon dioxide from the atmosphere and thereby contributing to the curtailment of global warming.
As the world population moves past 7 billion people, the demands imposed on the world’s ecosystems is immense. The ecological footprint of our 7 billion people is now in excess of what the world can handle. In other words we don’t have enough natural capital (i.e. clean air, clean water, fertile soil, etc.) in our world bank to support our population sustainably over time. Just like financial capital, we optimally have enough in the bank so that we can live purely off the interest generated by the capital. The world population is now eating away at the natural capital of the earth and we are heading toward ecological bankruptcy. Through the ethical, standardized and proper use of environmental attributes, we have a mechanism to provide an economic incentive to replenish natural capital worldwide.
Nowhere is this more important than in the prevention of deforestation and the subsequent negatve impacts of deforestation on climate change. In Copenhagen, in December 2009, 192 countries are meeting to develop new mechanisms for environmental attributes to be applied to this problem. Mechanisms such as conservation forestry carbon offsets and REDD (Reduced Emissions from Deforestation and Degradation) offsets have been put forward as a means to halt the dangerous continued deforestation of the planet.
In the future, new environmental attributes will be developed to address other ecosystem services. Human activities have now transformed 50% of the Earth’s ice-free land surface. Water is increasingly scarce in many parts of the world and mass water offsetting is set to begin. As well 66% of world fisheries are now overexploited, and 25% of bird species are extinct. Even insects, such as bees, are now threatened, and this could have a devastating effect on the pollination of food crops. New species-based offset programs are being investigated to halt extinctions. Finally, full ecosystem offsets will be developed where an entire ecosystem is being affected, such as the Tar Sands in northern Alberta.