| Williams Companiesannounced 5 May 2025 |
Complete the Transco Power Express expansion project due after leader left |
Open30 Sep 2030 |
| Williams Companiesannounced 6 May 2024 |
Bring the second phase of Transco's Regional Energy Access project online |
Met31 Dec 2024 |
| Williams Companiesannounced 1 Nov 2023 |
Close the acquisitions of Cureton Front Range LLC and Rocky Mountain Midstream |
Met31 Dec 2023 |
| Williams Companiesannounced 3 May 2023 |
Bring Regional Energy Access project into partial service |
Met31 Dec 2023 |
| Williams Companiesannounced 2 May 2022 |
Complete the Texas to Louisiana Energy Pathway project due after leader left |
Met31 Dec 2025 |
| Williams Companiesannounced 1 Nov 2021 |
Place the second phase of the Leidy South project into full service |
Met31 Dec 2021 |
| Williams Companiesannounced 2 Aug 2021 |
Bring into full service the Leidy South Transco expansion |
Met31 Dec 2021 |
| Williams Companiesannounced 3 May 2021 |
Complete the Leidy South project to transport gas from Appalachia to the Atlantic Seaboard |
Met31 Dec 2021 |
| Williams Companiesannounced 30 Oct 2019 |
Complete the Southeastern Trail expansion project |
Being checked31 Mar 2021 |
| Williams Companiesannounced 1 May 2019 |
Close the joint venture transaction with CPPIB |
No record found30 Sep 2019 |
| Williams Companiesannounced 17 May 2018 |
Close the acquisition of Williams Partners L.P |
Met30 Nov 2018 |
| Williams Companiesannounced 14 Feb 2018 |
Submit initial rate filing for Transco |
Met31 Dec 2018 |
| Williams Companiesannounced 1 Nov 2017 |
Place the Virginia Southside II project into service |
Met31 Dec 2017 |
| Williams Companiesannounced 25 May 2017 |
Close the acquisition of additional interests in Appalachia Midstream Investments |
Met · disputed30 Jun 2017 |
| Williams Companiesannounced 4 May 2017 |
Close the sale of membership interest in Williams Olefins LLC |
Met22 Sep 2017 |
| Williams Companiesannounced 4 May 2017 |
Place five Transco pipeline system expansions in service |
Met31 Dec 2017 |
| Williams Companiesannounced 15 Feb 2017 |
Complete the remaining Transco expansion projects |
Met31 Dec 2017 |
| Williams Companiesannounced 9 Jan 2017 |
Double Transco pipeline capacity |
Met31 Dec 2018 |
| Williams Companiesannounced 1 Aug 2016 |
Close the sale of the Canadian business |
Met30 Sep 2016 |
| Williams Companiesannounced 4 May 2016 |
Bring new projects into service |
No record found30 Sep 2016 |
| Williams Companiesannounced 4 May 2016 |
Bring natural gas transmission business into service |
Met31 Dec 2018 |