Sand Lake – Solstice Line is a 345kV overhead line with a length of 128.7km from Sand Lake, Texas, US, to Solstice, Texas, US.

The project, which is currently under construction, is expected to be commissioned in 2021.


Sand Lake – Solstice Line is an overhead line that will be operated by Oncor Electric Delivery. The line will carry alternating current (AC) through double circuit cable.

The development of the Sand Lake – Solstice Line project has been approved by the Public Utility Commission of Texas.

Sand Lake – Solstice Line project development status

The construction works on the Sand Lake – Solstice Line project were commenced in 2020 and commissioning is expected in 2021.

About Oncor Electric Delivery

Oncor Electric Delivery Co LLC (Oncor) is a regulated electricity transmission and distribution company that operates distribution and transmission systems. It provides transmission grid connections to merchant generation facilities and interconnections to other transmission grids. The company also provides planning, design, construct, operate and maintain services for the transmission grids; and own the load-serving substations primarily within certified distribution service areas.


All publicly-announced T&D Line & Substation projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects is sourced through secondary information sources such as country specific utility players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.