R.I. Gen. Laws § 39-24-2
Every gas company whose total annual sales in the preceding calendar year exceed five million cubic feet (5,000,000 cu. ft.) shall submit, every two (2) years, to the public utilities commission, a long-range energy plan for the five-year (5) period subsequent to the date the plan is submitted, and shall apprise the commission in the interim of any changes that substantially affect the plan. The public utilities commission shall by rule specify such information as it shall reasonably require, to include, but not be limited to, the company's peak demand forecasts, annual sales in cubic feet, major proposed additions to plant, and an analysis of the cost and financing of any proposed additions to plant or purchases. The filing shall include all assumptions and methodologies used by the company in formulating the plan.
R.I. Gen. Laws § 39-24-2