Briefing on Top of the World Windpower Project

The Top of the World Windpower Project is a 200 MW operational onshore wind farm in Wyoming, owned by Duke Energy, which has shown a 10% decline in generation over the past six months despite a strong annual capacity factor.

Overview

• Project Name: Top of the World Windpower (National Wildlife Federation, 2019-08-01)

• Status: Operational (PR Newswire, 2010-10-11) since 2010

• Location: Near Casper, Wyoming, USA, on approximately 17,000 acres in Converse County

• Parent Company: Duke Energy

• Operator: Duke Energy Renewables Services

Fleet Details

• Technology: Onshore Wind Turbine

• Capacity: 200 MW

• Generators: 1

• Grid Interconnection: NERC: WECC, BA: PacifiCorp - East

Operational Performance

• Annual Generation: 496 GWh

• Capacity Factor: 28.3%

• Recent Generation: 23 GWh (Oct 2025), 53 GWh (Nov 2025), 93 GWh (Dec 2025)

• Generation Trend: Down 10% over the past 6 months compared to the prior 6 months

Financial and Context

• Capital Expenditure (CapEx): $1895/kW (eia_agg_cost)

• Partners: IdentiFlight International (Duke Energy | News Center, 2018-01-23) for eagle protection

• Latest Activity: technology_launch (Duke Energy | News Center, 2018-01-23)

The Top of the World Windpower Project, a 200 MW onshore wind farm operated by Duke Energy Renewables Services, demonstrates consistent generation with a 28.3% capacity factor, despite a recent 10% decline in output. Its strategic location and technological adoption for environmental protection highlight its ongoing role in Wyoming's renewable energy landscape.