N.Y. Rural Electric Cooperative Law § 60
(b) Patronage capital shall be determined by a cooperative on an annual basis and shall be the excess, if any, of amounts received or receivable by such cooperative from furnishing electricity over such cooperative's operating costs and expenses properly chargeable against furnishing electricity, as determined using such accounting method or methods as agreed upon by the members. Costs and expenses chargeable against furnishing electricity shall include:
(d) On an annual basis, patronage capital determined under subdivision (b) of this section shall be allocated on the books of the cooperative to each patron having furnished such capital and shall be based upon and in proportion to: