“Firm (LD-System Reliability) means that the Product will be supplied from the owned or controlled generation or pre-existing purchased power assets of the system specified in any Transaction (the “System”) with non-firm transmission to and from the Delivery Point.  Seller’s failure to deliver shall be excused: (i) by Force Majeure, (ii) by Buyer’s failure to perform; (iii) by transmission curtailment; (iv) to the extent necessary to preserve the integrity of, or prevent or limit any instability on, the System; or (v) to the extent the total of the System’s Native Load, firm energy sales, and pre-existing Firm (LD-System Reliability) Transactions exceed the System’s projected available generation for the period of delivery of the Product less reserve requirements and pre-existing Firm (LD-System Reliability) purchases, as determined in the System’s reasonable judgment.  Buyer's failure to receive shall be excused by: (I) Force Majeure; (ii) Seller's failure to perform; or (iii) transmission curtailment.  In such events, neither party shall be liable to the other for any damages, including damages under Article Four.