Key facts about Biglow Canyon Wind Farm
Number of turbines
141; 76 additional coming in phase 3
There are two types of turbines at Biglow:
| |
Type 1 |
Type 2 |
| Turbine measurements |
| Height (with blade fully extended) |
396 ft |
415 ft |
| Weight |
246 tons |
340 tons |
|
| Blades |
| Rotation rate (revelations per minute) |
14.4 |
6-16 |
| Diameter |
269 ft |
305 ft |
| Blade tip speed |
130 mph and above |
164 mph |
| Operational speed |
- Rotor blades start at a wind speed of 7 mph
- Power produced at a wind speed of 9 mph
- Maximum rated power (1.65 megawatts) reached at wind speeds of 27 mph and greater
- High-wind shutdown initiated when average speed reaches 45 mph for 10 minutes, 55 mph for one minute, or 72 mph for one second
|
- Rotor blades start at a wind speed of 7 mph
- Power produced at a wind speed of 9 mph
- Maximum rated power (2.3 megawatts) reached at wind speeds of 30 mph and greater
- High-wind shutdown initiated when average speed reaches 56 mph for more than ten minutes
|
|
| Tower foundations |
| Diameter |
52.5 ft |
57.5 ft |
| Depth |
8 ft |
8 ft |
| Materials |
348 cubic yards of concrete reinforced by 26 tons of steel rebar |
400 cubic yards of concrete reinforced by 35 tons of steel rebar |
|
Output delivery
Power is delivered to PGE through a newly constructed Biglow substation connected to a new high-voltage Bonneville Power Administration transmission line to a substation in John Day.
Estimated project cost
Total capital investment is expected to be about $1 billion. Part of that cost is being offset by Energy Trust of Oregon, which is contributing $6 million.