Tariff Plans - Improved plan comparison

It is now possible to compare multiple tariff plans over a longer period of time, up to 31 days.

On the Daily Page click on Plan Cost


Click on the plan names below the graph to load the cost comparison - the below shows 3 plans compared. The longer the gold bars the better the plan compared to the baseline / historic cost.

The date period can be changed via Customise


Handy feature for plan change assessment. However, when I compare my current plan with previous plan, exports and imports values do not match?

It appears the system has no live consumption data or entered manually.

This is required to calculate the import which is 0Wh for all days listed.

Yes, sbfspot does not support consumption data uploads, so I update daily export & import data manually. The manual data is not considered for this comparison?


It seems like there is an issue with the comparison values. When I compare the “Current” to the Current Active Plan (which right now is “SCE Summer”), there is a variance in the Credit / Debit amount, which affects the Balance and Saving columns. Shouldn’t the Balance be the same and the Saving be $0 if comparing to the same plan?

The credit / debit DOES match up on the weekends (see the highlights on the images), just not the weekdays. Do I have the tariff’s loaded incorrectly? Note that the Import / Export values are correct on all days. - Thanks

Only the 5-minute data for both generation and consumption is considered as this determines the final export/import value on each day.

For this particular setup the recorded export/import should just be multiplied by the selected plan tariff rates, ignoring the live generation data.

Looks like a bug which treated all days as the weekend!

It’s fixed now, thanks for reporting the issue -

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It is now possible enable the No Recalcuation option via the Customise to calculate plan tariffs using the existing export/import data, which will work with manual entries.


Mate, that is great! Thanks for catering for this scenario. Checked and it seems to all good.

Is the 31 day restriction due to limiting performance impact on your hosting hardware?
Only change plans once a year, so not a real drama to manually assess each month individually, if that is the compromise.

Plan comparisons are a little data intensive since every 5-minute data point needs to be retrieved and processed.

Fantastic, Thanks for providing this.

I had been wondering about how I could compare plans and pvoutput has made it easy.

I did need a few extra steps, including loading multiple tariffs and had to reset the calculations, but now it is working a treat and has confirmed my suspicions I don’t want to switch to TOU.

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