With respect to the regulatory framework, it would be helpful to have mechanisms that allow us to carry out pilot projects, because they need to be done, especially in the United States. Generally, it's not easy to do them.
As Ms. Hansen said, we will be testing sections of networks that are not all made of the same material. For example, we need to be careful about the hydrogen mix used for industrial customers, because they have more sensitive devices. In 2022, we will conduct two closed-loop pilot projects to test our residential and commercial gas lines, so we can determine the maximum amount of hydrogen they can hold. We'll also conduct an industrial project at a central heating plant in downtown Montreal, where we will inject hydrogen into a boiler. We will proceed by trial and error and studies will be done. We may get federal support for research and development.
Other than injecting hydrogen, we could use sections of pipe from a natural gas network. We would considered it as an energy network, and completely dedicate those sections to hydrogen. That's a second possibility. There's also electricity-to-gas conversion, which involves converting CO2 extracted from an industrial site into renewable natural gas. They become completely interchangeable and there's no limit, meaning we can use 100% of it.
So we have several avenues to explore in terms of hydrogen in gas systems. There are billions of new and well maintained underground systems in Canada. We need to look at natural gas systems as energy systems and determine how we will move them towards decarbonization.