EFET - the European Federation of Energy Traders - has agreed a set of documents.

These are:
  1. EECS Master Agreement
  2. EECS Appendix to the EFET Power Agreement
  3. Usage Notes highlighting a few of the conceptual issues which users should be aware of when using the above agreement.
Comprehensive guidance notes will soon be drafted.

Note that these documents are also available on the EFET website.