Williams is planning to build a new propane dehydrogenation (PDH) facility in Alberta, Canada.
The new PDH facility will convert propane recovered from the company's Redwater facility, in Alberta, into propylene, increasing the company's polymer-grade propylene production from its Canadian operations.
The proposed PDH facility is expected to require an investment of between $600m and $800m, and is likely to have an annual capacity of one billion pounds.
David Chappell, Williams Energy Canada president, said building a PDH facility would further build on the value and expertise that the company has built in Canada and serve the booming North American petrochemical market.
"Besides our expertise in extracting and marketing these products, we have the infrastructure in place with fractionation, distribution and storage to fully realise the value from a new PDH facility,'' Chappell added.
"Because of our existing facilities, we would be able to capture value from PDH production byproducts - butane / butylene and ethane / ethylene - that another PDH operator would have to burn.
"We've built a unique business in Canada and we're continuing to explore ways to capture more of the off-gas available from existing and planned upgraders, and to add more value to the products we produce."