Clark told senators that exporting LNG, which she described as the cleanest fossil fuel, to Asia would create jobs, investment opportunities and eliminate the debt in her province.
She said the LNG industry will be the biggest step B.C. has taken to reducing global greenhouse gas emissions and growing its economy responsibly.
"It's very simple to say, I know, but of course like anything in politics, it's also very hard to do," she said, adding B.C. and California can push boundaries together for a cleaner environment.
However, Clark has previously suggested hitting the government's targets to reduce greenhouse gas emissions by one third by 2020 may be a challenge if the LNG industry expands.
Clark told senators B.C.'s $30-a-tonne carbon tax was considered the wrong move by naysayers, who said it would ruin the economy, but she said carbon emissions have gone down as the province's economy has grown faster than the national average.
Clark noted B.C.'s carbon tax is one of the highest such taxes in the world. In last year's election campaign, Clark promised to freeze B.C.'s carbon tax for five years.
She said California and B.C. won't be alone putting a price on carbon.
"Oregon (and) Washington state want to stand with us, too, and that means we will have, between the four jurisdictions, the clout to make a real difference in the world."