Our vision is to create a sustainable energy future for Arizona. To accomplish this, we must strike a balance between delivering reliable, affordable energy and being responsible stewards of the environment.

Environmental Leadership

The corporate Environmental department, which reports to the Vice President, Environmental and Chief Sustainability Officer, provides environmental and sustainability leadership to the company through establishing sound environmental policies, managing environmental risks, implementing world-class environmental management systems and driving the adoption of sustainable concepts. The department activities include:

  • EMS Program. Implementing and maintaining an extensive ISO 14001 certified Environmental Management System (EMS).
  • Training. Conducting environmental training in operating areas on environmental compliance and risk identification and reduction.
  • Audits. Interface with agency inspectors during site compliance audits and inspections.
  • Corrective Action Program. Actively engage with the APS Corrective Action Program and work for continuous improvement.
  • Policy, Process and Procedure. Develop, implement and maintain environmental processes and procedures to maintain environmental compliance.
  • Regulatory Compliance. Complete required reporting by EPA and local regulatory governing agencies.
  • Adhere to company’s Environmental Management System Policy.
  • Adhere to the company’s Code of Ethics and Business Responsibility, specifically Environmental Stewardship and Sustainability.

Learn more about: Clean Energy, Water, Waste, and Environmental Data.

Environmental Training 

The corporate Environmental department conducts environmental training in operating areas on environmental compliance and risk identification and reduction. Trainings are regularly updated to enhance and improve education and share best practices.

 Environmental Training 2016 2017  2018 
 Environmental Awareness Site Specific Training   2,332  2,261  2,539
 Environmental General Awareness  2,351  2,597  2,789
 PCB General Training  280  622  801
 Total    4,963  5,480  6,129

Environmental Management Systems

APS has established, documented, implemented and maintained an Environmental Management System (EMS) since 2011 under the International Organization for Standardization (ISO) 14001 Environmental Standards. In 2017, we completed the rollout of our ISO 14001 certified EMS in the operating areas, bringing our total of certified sites to 22 out of 26. The remaining four sites were determined by management to not be certified due to being unmanned facilities and proximity to other nearby ISO certified sites or they were being decommissioned in the near future. Management reviews sites regularly to assess feasibility to be part of the EMS program. 

Through the process of internal and external audits and a robust corrective action program, we work to continually improve the EMS program's effectiveness. Our ISO 14001 EMS policy establishes our vision and standards for environmental stewardship, performance and compliance. These standards ensure our company’s environmental programs and activities support our corporate environmental policy, goals and company vision to create a sustainable energy future. In addition to strengthening our environmental awareness, lowering environmental risks and ensuring a high level of environmental compliance, the program is fully integrated with all laws, regulations and other applicable requirements concerning the environment.

All APS employees, visitors, contractors, sub-contractors and independent contractors performing services for any ISO 14001 designated facility are required to comply with the facility’s EMS.

Implementing an ISO 14001 certified EMS helps us achieve improved performance in several ways, including:

  • Identify and control the environmental impact of our activities, products and services
  • Standardize our operational approach to managing environmental issues at our facilities through fulfillment of our compliance obligations
  • Improve our environmental performance and reduce environmental risks
  • Employ a systematic approach to setting environmental objectives and targets, achieving these targets and demonstrating that they have been achieved

Below is the list of ISO 14001 Certified sites and their certificates (click on each site to view certificate):

Power Plants

Service Centers

(all on one certificate)

Cholla Power Plant

501-502 Service Center

Paradise Valley Service Center

Four Corners Power Plant

Deer Valley Service Center

Parker Service Center

Ocotillo Power Plant

Casa Grande Service Center

Payson Service Center

Redhawk Power Plant

Cottonwood Service Center

Snowflake Service Center

Sundance Power Plant

Douglas Service Center

Surprise Service Center

West Phoenix Power Plant

Flagstaff Service Center

Wickenburg Service Center

Yucca Power Plant

Globe Service Center

Yuma Service Center

Ocotillo Service Center

Voluntary Environmental Stewardship Program

As a result of having an ISO certified EMS in place, four of our power plants have received the Platinum Level Voluntary Environmental Stewardship Program (VESP) from the Arizona Department of Environmental Quality (ADEQ). This is the highest award given out under this program. According to ADEQ, this three-year recognition is given to a facility that has met the Gold Level standard, has a functioning EMS with at least one fully completed audited EMS cycle, and commits to community outreach. We look forward to adding our other sites to this list as we continue our commitment to operational excellence and environmental stewardship. 

Complete list of VESP recognition levels and members



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