Excess productive capacity has gradually decreased in the natural gas market. This report provides information and the Board's observations on these changed conditions and then looks ahead to examine the prospects for gas supply over the period 1993 to 1996. The analysis and outlook are directed to both peak day and annual gas supply. A historical review of gas supply over 10 years is provided, including observations on the excess of deliverability over production, changes in remaining reserves, the trend in reserves-to-production ratios, trends in production, connection rates, gas storage, the response of Alberta supply in peak demand periods and recent developments. The Baord's methodology for estimating productive capacity is described and the results of the Board's analysis of Western Canada's productive capacity are presented and compared with other deliverability studies. A summary of the current and anticipated pipeline capacity in the producing provinces is presented and estimates for productive capacity are compared with pipeline capacity. Observations on factors influencing the interpretation of results conclude the document.