Data center owners Amazon, Google and Microsoft have used PPAs to offset emissions and electricity consumption from cloud computing. Some manufacturers with high carbon footprints and energy consumption, such as Anheuser-Busch InBev, have also shown interest in PPAs. In 2017, Anheuser-Busch InBev agreed to purchase 220 MW of new wind farms in Mexico through an AEA from energy supplier Iberdrola.  If a revolving asset can cover a fixed volume at a fixed price, certain quantities may not be produced and may have to be purchased. If this is the case, the producer may be required to acquire the volumes that are missing at market prices, which may be worse than the original fixed price. Optimizing volume risk is essential. Physical PPPs refer to the purchase of energy at the point of account (the receiving point of production). Typically, a distribution company provides energy to its many customers via existing transmission lines. A physical PPA customer receives physical delivery (or property) of energy on the grid. Investors are like risk managers. They aim to optimize their risk/return ratio. For them, the conclusion of long-term AAE contracts is a way to manage the risk of volatility. Prices in electricity markets are extremely volatile, as they can change very often (every 5 to 30 minutes).
The buyer generally requires the seller to guarantee that the project meets certain performance standards. Performance guarantees allow the buyer to plan accordingly when developing new facilities or when executing application plans, which also encourages the seller to keep appropriate records. In cases where the supplier`s delivery does not meet the buyer`s contractual energy needs, the seller is responsible for restructuring the buyer`s debt. Other guarantees can be contractually agreed, including availability guarantees and performance curves. Both types of safeguards are more applicable in regions where the energy used by renewable technologies is more volatile.  An electricity purchase contract (AAE) or an electricity contract is a contract between two parties, one that produces electricity (the seller) and the other that wants to buy electricity (the buyer). The PPP sets out all the terms and conditions for the sale of electricity between the two parties, including when the project will begin operating commercially, electricity delivery schedule, delivery penalties, payment terms and termination. An AEA is the main agreement that defines the revenue and credit quality of a production project and is therefore a key instrument of project financing. There are many forms of PPA in Use Today and they vary according to the needs of the buyer, seller, and financing against the parties.
  Power purchase contracts ensure that once capital investments are completed, the project generates a return by reducing liquidity uncertainty. In order to obtain offers to purchase, the owner of the renewable project usually makes a request for a proposal or offer (RFP/RFQ). Interested energy buyers can then make an offer to purchase. An AAE is a contractual agreement to buy a lot of energy at an agreed price, for a period of time, before the production of energy. Electricity prices can vary widely and often. The main feature of an electricity purchase agreement is the agreement to sell X amount of MWh from a renewable energy project to a fixed-price energy buyer. Although PPAs now guarantee the future purchase and sale of energy at an agreed price, the sale of an energy asset still needs to be managed throughout its lifespan. Although the parties may agree and sign a PPP contract for a period of 10 years, the asset concerned may continue to exist for up to 30 years. In the case of decentralized production (where the generator is on a construction site and the energy is sold to the building occupants), commercial PPAs have developed as a variant allowing companies, schools and governments to source directly from the generator.