Dan Lee explains why capacity factor could be becoming an increasingly less useful measure for comparing how different solar farms are performing and begins an exploration into some of the factors in play when trying to conduct more comprehensive analysis into generator performance.
Bungala 1 Solar Farm
A price spike in SA on Wednesday 23rd February reminds us of a price spike in NSW on Monday 21st February … one due to coal, the other due to solar … but both illustrating *the same* underlying dynamic.
A short look at this afternoon’s pricing volatility in the South Australian region with what appears to be coincident trips at 2 related Large Solar Farms.
Out-of-the-blue, the price spikes up near $10,000/MWh in South Australia on an otherwise ‘boring’ day … a sign of what we should expect increasingly in future?
This 19th Case Study in the series investigates one dispatch interval showing extreme Aggregate Under-Performance across all Semi-Scheduled units on Friday 5th April 2019.
This 15th Case Study is longer than the earlier 14 as it deals with 4 discrete instances of extreme level of collective under-performance, and 1 instance of over-performance, all within a 4-hour timeframe on the same day. A day which appears to have had widespread weather activity affecting the output of BOTH Wind and Solar across 3 Regions. A challenging day!
Two examples where units (in these cases Semi-Scheduled) appeared to disregard dispatch targets.