(Portland, OR) -- Northwest Natural has more than doubled the discount available for families with qualifying incomes. Previously, customers could save 40 percent and now that has increased to as much as 85 percent. Household incomes of nearly 18-thousand dollars get an 85 percent discount. The amount of the discount declines with income. A 15 percent discount is offered for families making up to nearly 71-thousand dollars. Northwest Natural has details on its website.