Overview

Objective

The relationship between transmission and distribution (T&D) lines and the surrounding environment is complex and multifaceted. Many factors, such as regulations, public interest, equity and environmental justice (EEJ), mitigation and resource protection, need to be considered from the moment the power lines are planned until the infrastructure reaches end of life.

This research aims to identify effective EEJ, mitigation, and resource protection measures to alleviate the potential impacts of new and existing T&D lines and ensure resource protection during construction and maintenance. In particular:

  • Evaluate T&D line siting models to inform the development of sufficient and robust alternatives that minimize impacts to important resources
  • Develop leading management practices for resource protection during various phases of the line siting, construction, and maintenance process
  • Evaluate and implement effective mitigation strategies to minimize and restore impacts from line construction and maintenance
  • Evaluate the scale and options for mitigation of project impacts, including permittee-responsible mitigation, use of mitigation/conservation banks, and landscape-scale approaches to mitigation
  • Reduce costs and minimize human health and ecological risks from utility poles across their life cycle
  • Address regulatory and public concerns about utility poles
  • Develop leading practices to incorporate equity and environmental justice measures into the full life cycle of power delivery infrastructure

Approach

Environmental Aspects of Line Maintenance:

This task develops guidance to minimize environmental impacts throughout the service life of T&D lines.

Environmental Aspects of Poles:

This task performs studies and laboratory testing to address environmental concerns related to T&D line poles.

Research value

  • Evaluates methods through which T&D line projects can be constructed and maintained while protecting environmental resources
  • Evaluates environmental performance of wood pole preservatives
  • Evaluates methods for preventing or mitigating and remediating environmental impacts from wood pole preservatives
  • Improves operational, financial, environmental, and human health risks management of new and replacement poles, including non-wood alternatives
  • Assesses the potential for T&D line projects to increase biodiversity and protect natural resources
  • Provides data for utilities to avoid pitfalls and to inform the environmental permitting and review process
  • Improves communications with internal stakeholders, including scientists, engineers, purchasing agents, and others
  • Improves communications with external stake-holders, including regulators, policymakers, other researchers, the media, and the public

Research plans

Current long-term projects

Fate and Transport of DCOI

This project uses DCOI-treated wood poles installed in tubs filled with red clay and silicon sand to assess the potential for DCOI to leach to the soil and porewater in the tubs. This project collects yearly samples in 2023, 2024, and 2026. The results of the yearly sampling would be used in 2027 to update the Utility-Focused Risk Evaluation of DCOI for Wood Utility Poles.

Project span: 2023-2027

2026 Project Tasks

Environmental Aspects of Wildfire Resiliency for T&D Infrastructure

This initiative seeks to investigate the environmental impacts of wildfire resiliency treatments, such as chemical retardants and coatings, which face increasing scrutiny regarding toxicity and runoff. By surveying utility practices and reviewing the environmental risks of common materials, the project aims to provide guidance on balancing wildfire mitigation with sustainability goals.

Recommended Practice for Evaluation of Rights of Way Encroachment Requests

This study will develop a recommended practice to support electric utilities in systematically evaluating rights‑of‑way (ROW) encroachment requests. It will establish a structured framework that integrates legal and regulatory review, risk assessment, stakeholder engagement, and technical evaluation to inform consistent and defensible decision‑making. The work will assess current utility approaches and identify practical tools, technologies, and documentation practices to improve safety, reliability, and compliance while balancing utility, landowner, and public interests.

Matting Usage and Materials in T&D Construction

This project intends to review current matting practices and assess the performance of alternative materials compared to traditional timber mats. Through industry peer-to-peer exchanges and supplier outreach, the research aims to evaluate availability, cost, and biosecurity implications.

Can confinement grids stabilize erosion on access roads?

This project intends to evaluate the effectiveness of confinement grid technologies for mitigating erosion and landslides on T&D access roads. Through a literature review and manufacturer interviews, the research aims to identify cost-effective methods for stabilizing problem areas. The work plans to select products for field testing in the future.