Davies Consulting

Strategies for Complex Organizations

Tree Trimming Model

TTM - 2Vegetation management is a critical element of protecting utility infrastructure.

Davies Consulting takes a holistic, risk-based approach to asset management that helps clients integrate vegetation management planning with storm prediction, outage response and recovery, and overall system hardening strategies. Our Tree Trimming Model (TTM)TM helps utilities develop strategies that meet budget targets as well as reliability objectives.  Along with consulting support, Davies Consulting applies TTM in support of client efforts to quantify the direct impact of vegetation management expenditures on system reliability and customer expectations.

TTM enables pre-analysis of existing tree trimming programs; guidance about the type of scenarios to run/what configuration to adopt in order to produce the most useful outputs; and expert regulatory advice to support compliance strategies, cost recovery filings, and proactive reliability investment programs.

How does it work?

  • Considers an organization’s historical outage and trimming data.
  • Compares a variety of scenarios to analyze the impact of different spending levels on vegetation management efforts.
  • Measures results in the frequency and duration of customer outages (SAIFI and SAIDI).
  • Generates organization-specific reliability and cost curves to illustrate projected performance and associated costs for every year after the trim date.
  • Allows users to directly associate their tree trimming initiatives with external stakeholder expectations.

 Why TTM?

  • User-friendly interface allows clients to determine the optimal level of funding required to establish a vegetation management schedule that best meets the company’s overall reliability and budget objectives.
  • Provides a means for evaluating reliability impacts based on constrained budgets.
  • Provides users with reports and other outputs to help communicate intended strategies to senior management and regulators.

February 2016: The Art & Science of Vegetation Management blog post