It appears that the answer to your question is a yes. I looked into their business profile and I’m certain that they can serve your home or business no matter how small or big it is. Business owners from different kinds of business mostly say good things about Spark corporation, so I’m quite confident with my answer.
I may not be of help because I really don’t know the exact answer hehe but as a huge company, they should be, right? They must be capable of handling any types of business to pursue growth on both sides. But I see no problem or other complaints with Spark Energy when it comes to handling various organizations.
Spark energy are known for deals with letting agents, where the letting agents pressurise tenants to use them as their energy supplier when they are signing the contract to rent a home. Often the letting agency will tell the tenants they have to use them. This is not the case, if the tenant pays the bills themselves they have the right to choose the supplier.
Presumably Spark Energy then pay a fee to the letting agency?