diff --git a/octopus-energy/README.md b/octopus-energy/README.md
--- a/octopus-energy/README.md
+++ b/octopus-energy/README.md
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@@ -84,6 +84,7 @@ Notes:
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- The `octopus_meter` measurement exists purely to make information on the meter available, it's most useful values are the tagset rather than the fields
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- The timestamp used in `octopus_consumption` is the *end* of the indicated period, so if Octopus's API reports 1kWh used between 00:00 and 00:30, the timestamp on the point will be for 00:30
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+- For ease of joining, the timestamp used in `octopus_pricing` is the *end* of the indicated period, so if Octopus's API reports a price of 0.01 between 00:00 and 00:30, the timestamp on the point will be for 00:30
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- For ease of joining, the plugin calculates `octopus_pricing` points every 30 minutes between `valid_from` and `valid_to`
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- Export tariffs don't currently have any specific handling (that will be added later)
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- Gas isn't currently handled