圣马科斯 to Escondido Transmission Line Project (TL 6975)

西班牙&E is proposing a reliability project that would include a combination of new overhead single-circuit electric power line structures, rebuild of existing structures from single circuit to double circuit, and the reconductoring and re-energizing of existing conductors on existing poles and towers.  The majority of the project would occur within existing rights-of-way (ROW)s.

拟建项目 includes the construction of a new 69kV transmission line and upgrade of existing facilities between the existing 圣马科斯 and Escondido substations which will provide greater capacity for electricity to flow to the Escondido and 圣马科斯 communities.

如果得到批准, the proposed project would be located in the communities of Escondido, 圣马科斯, 卡尔斯巴德, Vista和圣地亚哥县. The project includes three main segments:

第一部分重建: 重建约1.8 miles of existing 69kV overhead transmission line to the west of the 圣马科斯 Substation.

第二部分新建: 约2的加法.8 miles of a new single circuit 69kV overhead transmission line from the end of Segment 1 to Meadowlark Junction (San Elijo Road between Elfin Forest and Fallsview Roads).

第三部分更换/重新通电: 更换约7上的导体.4 miles of power lines from Meadowlark Junction to the existing Escondido Substation on existing poles and towers. Replaced transmission line will then be energized.

As our region expands, our demand for energy also grows. Given the load growth over the past decade in the communities of 圣马科斯 and Escondido, increased demand for energy has created congestion on the existing power lines creating strain on the electric system. 拟建项目 will add more capacity to accommodate the increased demand for power in this area, 从而提高可靠性.

In addition to balancing demand daily, 西班牙&E is also committed to planning for additional demand years ahead.  To accommodate the recent growth and planned future development in the northern part of the county, we’ve determined that additional resources are necessary to be able to meet the demand on the electric system.  The increased demand over the past few years has put extra strain on two power lines that deliver power to the Escondido and 圣马科斯 communities. 拟建项目, which has been reviewed and approved by the state’s controller of the electric grid (CAISO), would alleviate these loading violations and improve reliability and improve system efficiency in 西班牙&E服务区.

在设计项目时，可持续发展目标&E considers many options as part of the evaluation, including cost impacts to all ratepayers, potential short-term and long-term impacts to the environment, impacts to private property and utilization of existing electric rights-of-way. 拟建项目 route was chosen as it was the best nexus between utilizing existing easements and rights-of-ways, 有限的环境影响, 以及成本效益.

An underground route was considered as one of the alternatives in 西班牙&E向其监管机构提出的申请, The California Public Utilities Commission, but was not chosen as the preferred route by 西班牙&E because all ratepayers would bear the burden of the increased costs associated with underground construction.

在设计项目时，可持续发展目标&E considers many options as part of the evaluation, including cost impacts to all ratepayers, potential short-term and long-term impacts to the environment, impacts to private property and utilization of existing electric utility rights-of-way. Underground lines were considered by 西班牙&E as one of the alternatives in the application to the California Public Utilities Commission, 但西班牙&E did not select the underground route based the fact that all ratepayers would bear the burden of the costs. Ultimately, it’s up to the CPUC to approve the proposed project and determine the project route.