APS 2015 Annual Report Download - page 17

Table of Contents
2016
2020
2025
RES as a % of retail electric sales 6%
10%
15%
Percent of RES to be supplied from distributed energy resources 30%
30%
30%
In 2013, the ACC conducted a hearing to consider APS's proposal to establish compliance with distributed energy requirements
by tracking and recording distributed energy, rather than acquiring and retiring renewable energy credits. On February 6, 2014, the
ACC established a proceeding to modify the renewable energy rules to establish a process for compliance with the renewable energy
requirement that is not based solely on the use of renewable energy credits. On September 9, 2014, the ACC authorized a rulemaking
process to modify the RES rules. The proposed changes would permit the ACC to find that utilities have complied with the distributed
energy requirement in light of all available information. The ACC adopted these changes on December 18, 2014. The revised rules
went into effect on April 21, 2015.
Renewable Energy Portfolio. To date, APS has a diverse portfolio of existing and planned renewable resources totaling 1,328
MW, including solar, wind, geothermal, biomass and biogas. Of this portfolio, 1,278 MW are currently in operation and 50 MW are
under contract for development or are under construction. Renewable resources in operation include 189 MW of facilities owned by
APS, 629 MW of long-term purchased power agreements, and an estimated 427 MW of customer-sited, third-party owned distributed
energy resources.
APS’s strategy to achieve its RES requirements includes executing purchased power contracts for new facilities, ongoing
development of distributed energy resources and procurement of new facilities to be owned by APS. In September 2015, APS
completed construction of its 170 MW AZ Sun Program. APS has invested approximately $675 million in its AZ Sun Program. See
Note 3 for additional details about the AZ Sun Program.
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