electric usage/generation/storage cost modelling software?

[Gareth J]

At the end of the summer I'll have a full year's import/export data available from the smart meter on the ranch here. Will also be coming up to the end of supply contract.

Before I fire up Excell to try to make an educated choice about a new supplier/tariff, are there any tools available that'll do the job?

Will also be useful deciding about potentially installing batteries and how many. Cheers