Alta Mesa Project - Phases I and II

TenderLand Power Company's subsidiary, Mark Technologies Corporation, developed Phases I and II of the Alta Mesa Project in the 1980s. The Alta Mesa Project is located in the San Gorgonio Pass near Palm Springs, California.

Phase I includes 60 Danwin 160kW wind turbines installed in 1988, and Phase II includes 57 of the same model installed in 1989. Collectively these 117 turbines (with 18.7 MW of installed capacity) are known as the Swanmill project. The Danwin 160kW machines at Alta Mesa have a rotor diameter of 23 meters and are mounted atop 23 meter tubular steel towers.

Many of the turbines are located atop steep ridge lines which offer excellent wind conditions, with the best turbine sites achieving average annual capacity factors of 48%. The Danwin turbines have maintained excellent energy production records despite their advancing age and aggressive wind regime.

Phases I and II are currently owned and operated by enXco, Inc. under a long-term lease with Mark Technologies Corporation. Power from the project is sold to Southern California Edison Company under a long-term contract.