Quebec held independence referendums, so Alberta can hold one too.
Claimed by: Commonly stated by Alberta independence advocates
Needs context: Accurate as written, but a key piece of context changes how it reads. How we rate.
Short answer
It is true that Quebec held province-wide votes on sovereignty, in 1980 and again in 1995, and a province can put such a question to its voters. The important distinction is what a referendum does: those votes asked for a mandate to negotiate, not to declare independence, and the No side won both, narrowly in 1995. A provincial referendum can show the will of voters, but on its own it does not accomplish secession, which still requires a clear question and majority and a constitutional amendment.
What remains uncertain
The claim can be accurate as stated, but important context changes how most people would understand it. The summary above supplies that missing context.
What the evidence shows
Quebec's 1980 referendum on a mandate to negotiate sovereignty-association was rejected, with 59.56 percent voting No on an 85.6 percent turnout.
The 1995 referendum on sovereignty was also defeated, with the No side winning 50.58 percent on a 93.5 percent turnout.