This paper examines the regional differences in the irrigation demand for electricity. The analysis is based upon the Rural Electric Cooperatives' statistics on the sale of power for irrigation. A simultaneous-equation system is developed to focus on both the short-run utilization of electricity in irrigation and the long-run determination of the number of irrigators using electricity. The structural equations are estimated using pooled, state-level data for the period 1969–79. In light of the model's results, the impacts of changes in relative energy prices on irrigation are examined.