Welcome to the Microsoft Q&A Platform. Thank you for reaching out & I hope you are doing well.
I understand that you would like to know if we can Stop/Shut down a Standard LB.
As stated by Achraf Cherki El Idrissi , starting and Stopping of Azure Load Balancer is not supported.
You can only start and stop an Application gateway.
Refer : How can I stop and start Azure Application Gateway?
When you stop and start Application Gateway, billing also stops and starts
If you wish you may request this feature in the below forum :
All the feedback shared in this forum are monitored and reviewed by the Microsoft engineering teams responsible for building Azure
Cheers,
Kapil
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