26. (1) It is unlawful for a retail supplier to—
(a) refuse to supply electricity to any person; or
(b) supply electricity to any person on terms that are less advantageous than those on which the supplier supplies electricity to other persons;
on the basis that the person uses or supplies alternative forms of energy, uses or supplies energy from alternative sources or uses or supplies products, processes, designs or services that reduce the demand for energy.
(2) It is a condition of a retail supplier's licence that the retail supplier does not contravene this section.