As a general rule, the termination of an AEA ends with the agreed commercial operating period. An AEA may be terminated in the event of unusual events or circumstances that do not comply with contractual guidelines. The seller has the right to limit the supply of energy if such unusual circumstances occur, including natural disasters and uncontrolled events. The AAE can also allow the buyer to reduce energy if the value of after-tax electricity changes.  In the case of a reduction in energy, it is usually because one of the parties involved is liable, resulting in damages to the other party. This can be excused in exceptional circumstances such as natural disasters, and the party responsible for repairing the project is responsible for such damage. In cases where liability is not properly defined in the contract, the parties can negotiate a case of force majeure to resolve these issues.  These are examples of this type of PPP that are listed below. AAEs have been subdivided into AAEs that are more relevant to smaller and more rural energy projects, and more complex AAEs, relevant to large projects in developing countries. In Saskatchewan, about 20% of electricity generation is delivered via PPPs, mainly natural gas and wind power. The Power Corporation Act gives the vertically integrated Crown saskPower utility the ability to enter into contracts with IPPs on any conditions it deems appropriate.
SaskPower`s broad legislative authority to impose IPPs conditions is consistent with SaskPower`s historic role in Saskatchewan as a Crown Group, which has a monopoly on the production, distribution and transfer of electricity, particularly for the good of the people of Saskatchewan. There is no public standard PPA form for use between SaskPower and IPPs. However, PPPs are often attached to Requests for Proposals (RFP) issued by SaskPower. SaskPower preferred a competitive public purchase of energy from IPPs and seems to continue to prefer, unlike the buyout contracts that have been used in Ontario. It is hard to imagine why SaskPower would further strengthen termination clauses in AAEs, but IPPs should always be aware of deviations from previous PPPs. Given that SaskPower preferred PPIs and has always had a very strong legislative power over IPPs in Saskatchewan, developments in Ontario in Saskatchewan should not be expected to have a significant impact. AAEs can be managed by service providers in the European market. Legal agreements between the national energy sectors (sellers) and the distributor (buyer/purchaser of large quantities of electricity) are treated as AAEs in the energy sector. The above AAEs must be distinguished from electricity purchase contracts in a deregulated electricity market, which are generally contracts to purchase electricity from a private generator where the plant already exists or when the plant is built at the initiative of the private generator.