Goldfinch1
DIY
- Reaction score
- 1
Hello
Is it possible for solar panel monitoring to over state the actual power generated by the system? My friend’s 6.4kW system has generated 1280 kWh in the 82 days since its commissioning on 1/12/2022. Extrapolation of this output predicts an annual production of around 5,700 kWh which, according to numerous Internet sources, is about what’s expected for a 6.4kW system in the UK.The thing is, generation to date has all been in winter when output from the panels is generally low. Furthermore, if we extrapolate output for the first 20 days of February, the indicative annual output (with no attempt to correct for more productive spring/summer/autumn days) is approximately 7,500kWh. This is more than the expected annual output. If we applied correction for longer daylight months, this figure would be much higher. The system, located in the SW of England, comprises 16 x 400kW panels arranged in two strings using two Growatt inverters and has battery storage. The placement of the panels is south facing, with no shade. Any thoughts? Here’s hoping our friends have a super efficient system. Thank you.
Is it possible for solar panel monitoring to over state the actual power generated by the system? My friend’s 6.4kW system has generated 1280 kWh in the 82 days since its commissioning on 1/12/2022. Extrapolation of this output predicts an annual production of around 5,700 kWh which, according to numerous Internet sources, is about what’s expected for a 6.4kW system in the UK.The thing is, generation to date has all been in winter when output from the panels is generally low. Furthermore, if we extrapolate output for the first 20 days of February, the indicative annual output (with no attempt to correct for more productive spring/summer/autumn days) is approximately 7,500kWh. This is more than the expected annual output. If we applied correction for longer daylight months, this figure would be much higher. The system, located in the SW of England, comprises 16 x 400kW panels arranged in two strings using two Growatt inverters and has battery storage. The placement of the panels is south facing, with no shade. Any thoughts? Here’s hoping our friends have a super efficient system. Thank you.