In North America and Asia it's a very well-established practice. We have power plants in the United Kingdom, Denmark, the Netherlands. It's very mainstream.
The cost to convert a plant is quite minimal. You just need to have covered storage and separate conveyers and change out some of the grinding and burner systems. The rest of the power plant stays the same. The technical risk is zero. There's no loss of efficiency in the plant.
Really, the main barrier is that wood pellets cost more than coal. There needs to be a policy framework to support it. Each country does it a little differently. The way it's working in Europe and Asia is that there are green certificates or renewable portfolio standards or mandates or taxes—something to raise the cost of coal that makes it possible to use wood pellets.
We've talked to a number of the power utilities in Canada. Ontario Power Generation is sold on it. They've converted two plants and have had great success, but the other plants.... They're traditional industries. They're cautious. They're still waiting for the provincial and federal regulatory environment to become more clear before they embark on the change.