The BC Hydrogen Office website talks about both electrolysis and removing hydrogen from natural gas then storing the left over bits underground.

B.C. has several advantages for producing low-carbon hydrogen. More than 98% of electricity generated in the province is clean or renewable. This means B.C. has a significant opportunity to produce clean hydrogen from electrolysis.

B.C. is also home to abundant natural gas reserves and significant geological carbon storage capacity. These are necessary for producing low-carbon hydrogen from natural gas. With these attributes, B.C. can supply the growing global demand for low-carbon hydrogen.