Performance of the GTAC PV System for 2001
This page contains measured performance data for the GTAC PV system for the year 2001. We will update the information here as each month's measurements become available. Click on any month on the left to obtain that month's data.
- AC Energy Production [MWh]
| Month | Measured | Predicted* |
| January | 22.27 | 18.7 |
| February | 21.64 | 22.6 |
| March | 31.35 | 34.0 |
| April | 38.28 | 39.7 |
| May | 42.77 | 46.9 |
| June | 41.87 | 42.9 |
| July | 43.60* | 44.0 |
| August | 30.15* | 42.5 |
| September | 29.19 | 31.7 |
| October | 29.81 | 32.3 |
| November | 23.07 | 23.0 |
| December | 19.18 | 18.8 |
* Estimated value. DAS malfunction.
Mean daylight-hours module temperature [oC]
| Month | Measured | Predicted |
| January | 15.60 | 10.5 |
| February | 21.38 | 12.3 |
| March | 22.72 | 19.3 |
| April | 33.96 | 28.5 |
| May | 38.38 | 33.3 |
| June | N/A** | 35.5 |
| July | 43.73 | 37.4 |
| August | 42.75 | 38.4 |
| September | 38.27 | 32.2 |
| October | 32.56 | 26.8 |
| November | 29.38 | 18.6 |
| December | 19.67 | 12.0 |
* No data, DAS malfunction.
- Daily average solar energy flux [MWh/m2/day]
| Month | Measured | Predicted |
| January | 2.70 | 3.15 |
| February | 2.98 | 3.43 |
| March | 4.12 | 4.68 |
| April | 5.32 | 5.39 |
| May | 5.75 | 6.31 |
| June | N/A | 5.98 |
| July | 5.79 | 5.98 |
| August | 5.53 | 5.76 |
| September | 5.23 | 4.43 |
| October | 5.03 | 4.29 |
| November | 3.81 | 3.11 |
| December | 2.79 | 2.44 |
* No data. DAS malfunction.
- Average sunlight-to-AC-power efficiency [%]
| Month | Measured* |
| January | 8.57 |
| February | 8.32 |
| March | 7.88 |
| April | 7.66 |
| May | 7.66 |
| June | N/A** |
| July | N/A** |
| August | N/A** |
| September | N/A** |
| October | 7.10 |
| November | 7.32 |
| December | 7.14 |
* This "average" efficiency was found using only the times during which the system's DC power was higher than 80 kW. For lower DC powers, sensor inaccuracies cause the values to be suspect.
** No data. DAS malfunction.
- Typical DC voltage range [V]
| Month | Measured |
| January | 370-450 |
| February | 360-435 |
| March | 360-440 |
| April | 335-430 |
| May | 310-415 |
| June | 325-410 |
| July | N/A* |
| August | 325-405 |
| September | 325-420 |
| October | 340-430 |
| November | 355-420 |
| December | 365-445 |
* No data. DAS malfunction.
Last updated: Monday, January 07, 2002