Market Structure Appendix B Electricity Flow KESH Gen

Market Structure Appendix B Electricity Flow KESH Gen OST: Transmission System Distribution Company (Disco) IPPs Tariff Customers Qualified Suppliers (Imports) SPPs (Embedded Generators) Eligible Customers In Distribution Areas Export Markets Eligible Customers Directly Connected to Transmission Grid July 2007 Eligible Customers

Appendix C Market Structure Interconnection and Transmission Service Agreements Including Ancillary Services (Provided by OST) KESH Gen OST Distribution Company ( Public Supplier Role) Tariff Customers Note 1 Eligible Customers SPPs; IPPs; and Qualified Suppliers Note 1: Those Eligible Customers connected to a distribution system will need to enter into an agreement with the distribution company that serves them regarding connection and distribution services. July 2007

Market Structure Appendix D Energy Supply Agreements OST KESH Gen Electricity Supply Agreement* Distribution Company (Public Supplier Role) Economy Energy Purchases Regulated Tariffs and Service Agreements with Tariff Customers* Traders cit ctri y. S upp Tariff Customers nts eme e r g ly A Ele Eligible Customers SPPs; IPPs; and Qualified Suppliers Electricity Supply Agreements ( Electricity Supply Agreements Export Markets Electricity Supply Agreements for Licensed Exports* * Regulated by ERE July 2007

MARKET STRUCTURE Settlements – Flow of Funds Appendix E Note 1 Payments under Interconnection Agreements KESH Gen OST Payments under Transmission Tariff including ancillary services Payments under Distribution and Supply Tariff Traders Tariff Customers Payments for Economy Energy Purchases ( SPPs, IPPs; Qualified Suppliers ( Distribution Company/ Public Supplier Payments under Electricity Supply Agreements ( Note 2 Payments under Transmission Tariff and Service Agreements Eligible Customers Payments under Electricity Supply Agreements where permitted by ERE Export Markets Payments under Electricity Supply Agreements for Licensed Exports where permitted by ERE Note 1: Payments under Annual Regulated Electricity Supply Contract; Payments for Electricity Purchased Outside of Contracts Note 2: Payments under Distribution Use of System Tariffs July 2007