How to Connect Your Tesla Powerwall to OhmMy

Tesla Powerwalls are fantastic batteries, but the Tesla app only shows you Tesla devices. OhmMy brings your Powerwall together with your tariff, other devices, and smart automation. Here's how to connect it.

Prerequisites

Before you begin, ensure you have:

A Tesla account with Powerwall registered
The Tesla app installed and working
Your Powerwall connected to WiFi
An OhmMy account

Info

OhmMy uses Tesla's official API via OAuth2. We never see or store your Tesla password.

Step 1: Start the Connection

Log into OhmMy
Go to Settings > Integrations
Click Add Integration
Select Tesla from the list

Step 2: Authorize with Tesla

You'll be redirected to Tesla's login page:

Enter your Tesla email and password
Complete any 2FA if enabled
Review the permissions OhmMy is requesting
Click Authorize

Warning

If you use Tesla's "Phone Key" feature for your car, you may need to use your Tesla account password rather than just biometric login.

Step 3: Select Your Products

After authorization, OhmMy will show all Tesla products on your account:

Powerwall - Home battery
Solar - If you have Tesla Solar Roof or panels
Vehicle - We don't access vehicle data, only energy products

Select the products you want to monitor and click Connect.

Step 4: Verify the Connection

Once connected, you should see:

Real-time power flow (solar, battery, home, grid)
Battery state of charge
Historical data (may take a few minutes to sync)

Go to your Dashboard and look for your Tesla devices.

Available Data

OhmMy receives the following from Tesla:

Data Point	Update Frequency
Power flow	Every 5 seconds
Battery SoC	Every 5 seconds
Daily energy	Every 15 minutes
Grid status	Real-time

Control Features

With Tesla connected, you can:

Backup Reserve

Set your backup reserve percentage:

Go to Devices > Powerwall
Adjust the Backup Reserve slider
Changes apply immediately

Operation Mode

Choose how your Powerwall operates:

Self-Powered - Maximize self-consumption
Time-Based Control - Follow a schedule
Backup-Only - Save for outages

Tip

OhmMy's smart scheduling works best with "Time-Based Control" mode, allowing us to optimize around your tariff prices.

Storm Watch

Enable or disable Tesla's Storm Watch feature, which automatically charges your battery before severe weather.

Troubleshooting

"Authorization Failed"

Ensure you're using the correct Tesla account
Try logging out of the Tesla app and back in
Check if Tesla's servers are experiencing issues

"No Products Found"

Verify your Powerwall appears in the Tesla app
Ensure the Powerwall is online (check WiFi connection)
Wait 5 minutes and try again

"Data Not Updating"

Tesla's API occasionally has delays
Check the Tesla app shows current data
Try disconnecting and reconnecting in OhmMy

Token Refresh Issues

OhmMy automatically refreshes your Tesla token every 8 hours. If you see authentication errors:

Go to Settings > Integrations > Tesla
Click Reconnect
Re-authorize with Tesla

Info

We're working with Tesla to implement their new Fleet API, which will provide more reliable connections. Coming Q2 2025.

Privacy & Security

Your connection is secured by:

OAuth2 - Industry-standard authorization
Token encryption - Stored securely, never in plain text
No password storage - We only store refresh tokens
Revocable access - Remove OhmMy from your Tesla account anytime

To revoke access:

Log into tesla.com
Go to Account > Security > Third-Party Apps
Remove OhmMy

What's Next?

Now that your Powerwall is connected:

Set up your tariff for cost tracking
Configure smart charging based on prices
Enable automations for hands-free optimization

Your Powerwall and OhmMy are now working together to maximize your energy savings!