Urgent - Guarantees required to Power Marketers

We are preparing a presentation for the Argentine Secretariat of Energy
commenting on several subjects. We must deliver this presentation first time
Monday morning to the power marketers association of Argentina.
One of the key subjects covered are the guarantees required to power
marketers.
We would highly appreciate if you could check if the (1 or 2 pages) summary
written below still reflects the reality of the market you are involved
and/or make the necessary changes. Only focus on the market of your expertise.
If you are not the appropriate person to ask for this information, please
tell me who is.
Please copy the answer to Andrea Calo, since she will be updating the
document during the weekend.
Thanks.
GC