Wind · Solar PV · Hybrid · Battery storage
WattOdds builds up the uncertainty of a renewable energy project one item at a time, from the measurement on site to the point of interconnection. Use whatever information you have, and get P50, P90 and P99 values you can trace back to every assumption.
Open WattOddsFree and open source. Opens on a worked example.
Uncertainty builds up stage by stage, in the same order as an energy yield assessment. Each stage holds the items that belong to it.
Hybrids put wind and solar behind one grid connection and count the shared losses once. A battery adds storage and firm-supply stages, simulated hour by hour.
For each item, calculate it, describe the site, enter a value from a report or use a cited default. The results show how much of the total rests on generic values.
Instruments, long-term correction, flow models, wakes, soiling, availability, curtailment and more. Each item says what drives it, how to reduce it and where its numbers come from.
P-values for one year, ten years and the plant's life, checked by Monte Carlo. A ranked list shows which items would lift P90 most if you reduced them. Export it all to Excel.
Wind and solar behind one connection, with their correlation and the export limit. Add a battery and test each hour against firm-supply rules.
See a full assessment on the example, then start your own project.
Open WattOdds