| Symbol |
Definition |
| AAA |
Highest Quality: The expectation of the stated volumes and timings being achieved is the highest. |
| AA |
Very High Quality: The expectation of the stated volumes and timings being achieved is very high and any shortfall in the emission reductions likely to be very low |
| A |
High Quality: The expectation of the stated volumes and timings being achieved is high and any shortfall in the emission reductions is likely to be low. |
| BBB |
Good Quality: The expectation of the stated volumes and timings being achieved is good and any shortfall in the volumes is likely to be moderate. |
| BB |
Speculative: There is a certain risk that either specified volume or time cannot be achieved; shortfall in expected volumes is likely to be significant. |
| B |
Highly Speculative: There is a greater risk that either specified volume or time cannot be achieved, and the emission reductions are likely to fall significantly short of the stated |
| CCC |
High Risk: There is a very high risk that either specified volume or time cannot be achieved, and the emission reductions are likely to fall short of the stated by a great extent. |
| CC |
Very High Risk: There is a very high risk that either specified volume or time cannot be achieved and shortfall in emission reductions is likely to be very large. |
| C |
Highest Risk: The risk of either specified volume or time not being achieved is the highest. |
| D |
The asset is defaulting on its stated obligations and plan of emission reductions |
