Updated: March 2020

Environmental Management

Our Environmental department, which reports to the Senior Vice President of Operations, 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. Implement and maintain an extensive ISO 14001 certified Environmental Management System (EMS)
  • Training. Conduct 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 the company’s Environmental Policy
  • Adhere to the company’s Code of Ethics and Business Responsibility, including the section on environmental stewardship and sustainability

Learn more about Clean Energy, Water, Waste, Biodiversity 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 2019
 Environmental Awareness - Site Specific  2,983 2,566 2,677 2,641
 Environmental Awareness - General 2,989 3,085 2,994 2,688
 PCB Basics for Low-Risk Employees (*new in 2019)       147
 PCB General 308 679 834 845
 Total   6,280 6,330 6,505 6,321

Environmental Management System

We have established, documented, implemented and maintained an 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 all the critical operating areas, including power plants and service centers.

Through the process of internal and external audits, and a robust Corrective Action Program, we work continually to improve its 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 provide a sustainable energy future.

In addition to strengthening our environmental awareness, lowering environmental risks and ensuring a high level of environmental compliance, the EMS is fully integrated with all laws, regulations and other applicable environmental requirements at our power plants.

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 fulfilment 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

Cholla Power Plant

Four Corners Power Plant

Ocotillo Power Plant

Redhawk Power Plant

Sundance Power Plant

West Phoenix Power Plant

Yucca Power Plant


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. 

View a complete list of ADEQ VESP members

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