This study proposes a method to remotely determine the Performance Ratio (PR) of solar farms using satellite weather data, without needing ground-based measuring equipment. The accuracy of this method is calculated by using it to estimate the PR of all the NEM-connected solar farms, then comparing it to the PR calculated using site data.
Solar photovoltaic (PV) performance depends on system quality and weather and can be quantified using the performance ratio (PR) calculation. PR is the ratio of the electricity generated to the electricity that would have been generated if the plant consistently converted sunlight to electricity at the level expected from the DC nameplate rating.
PR measurements at solar farms typically use high accuracy ground station irradiance and temperature measurements to calculate the performance of a solar farm given the observed weather conditions. The reliance on privately-owned high-quality ground station data means that; performance data for solar farms is temporally and spatially scarce, is expensive to maintain, and remains unavailable to the public. Without this data, it is impossible to compare performance between projects or benchmark the performance of solar farms operating in a particular market.
The Generator Operations Series
The Generator Operations Series: Benchmarking Large-Scale Solar PV Performance in Australia
This study proposes a method to remotely determine the Performance Ratio (PR) of solar farms using satellite weather data, without needing ground-based measuring equipment.
The Generator Operations Series: Forecasts vs Actuals from the LSS Projects
The fourth report in the Generator Operations series shares insights into the projects funded under ARENA’s Large-scale Solar PV Competitive Round.
The Generator Operations Series: Negative Pricing and Bidding Behaviour on the NEM
This report analyses four years of AEMO data to provide a detailed picture of negative pricing in the NEM over time and across the states.
The Generator Operations Series: Ramp Rates for Solar and Wind Generators on the NEM
This report analyses the impact of generator size (geographic footprint and installed capacity) on ramp rates for solar and wind farms in Australia.
The Generator Operations Series: Large-Scale Solar Operations
This is the first of a series of reports on the operations of large-scale solar (LSS) projects in Australia.
The Generator Operations Series: Unlocking Curtailed Solar Energy on the NEM through Storage
This study estimates the potential generation, associated revenue and emissions reduction benefits that could be captured by co-locating large-scale battery storage at 44 NEM connected solar farms.