Director of Power Systems. Nevada Irrigation District. Grass Valley, California. Annual Salary. $173,243 — $233,917 DOE/DOQ. An Award-Winning Special District. Experience the picturesque beauty of the Sierra Nevada foothills, as you lead an innovative agency in power and hydroelectric excellence. The Nevada Irrigation District (NID) is seeking a Director of Power Systems to oversee 30 staff, a hydroelectric budget of approximately $12.7 million, ...