Roza Powerplant
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| Region | Facilities in Pacific Northwest | Pacific Northwest Home Page |
| State | Washington |
| River | Roza Main River |
| Purpose | The Roza Powerplant provides power at the cost of production to operate pumps on the Roza Irrigation District. The Roza Irrigation District pumps to 27,700 acres of their irrigation deliveries. Any other power generated is marketed through the BPA. |
| Facts | The Roza Powerplant develops 12,937 kilowatts. More than 70 miles of transmission lines deliver power to pumping plants in the Roza Division. |
| Facts | Roza Diversion Dam is a concrete weir structure 67 feet high. The crest is 486 feet long. |
| History | Plans for the Roza Division were initiated in 1932. The powerplant was completed in conjunction with that plan in 1958. It has been operated since at the maximum capacity allowed by available flows, weather, and maintenance. |
| Present Activities | Normal operations |
| Special Issues | A major contributor to the cost of O&M at the Roza Powerplant is the cost of maintaining about 10 miles of delivery canal and over 70 miles of transmission line. |
| NERC Region | Western Electricity Coordinating Council, Northwest Power Pool Area |
| PMA Service Area | Bonneville Power Administration |
| Plant Type | Conventional |
| Powerhouse Type | Above Ground |
| Turbine Type | Propellor |
| Original Nameplate Capacity | 10,660 kW |
| Installed Capacity | 12,937 kW |
| Year of Initial Operation | 1958 |
| Age | 49 years |
| Net Generation | 76,854,838 kWh |
| (Fiscal Year) | 2007 |
| Rated Head | 158 ft |
| Plant Factor | 67.9 percent |
| (Fiscal Year) | 2007 |
| Production Mode | Intermediate |
| Remotely Operated | No |
| Project Authorization | The President approved the Yakima Project on November 6, 1935. |
| Project Purpose | The Yakima Project provides irrigation water for a comparatively narrow strip of fertile land that extends for 175 miles on both sides of the Yakima River in south-central Washington. The irrigable lands presently being served total about 465,000 acres. |
| Project Purpose | The Roza Division, a unit containing 72,511 acres of land north of the Yakima River, extends from the vicinity of Pomona to a point north of Benton City. The distribution system is supplied by the Roza Canal, which originates at the Roza Diversion Dam on the Yakima River about 10 miles north of Yakima. The Roza Powerplant is adjacent to the Roza Canal, 3 miles from Yakima. |
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