During the battery permitting process, utilities like Oncor and CenterPoint will email Base members two agreements to sign to complete the process:
Tariff Agreement (TA):
The Tariff Agreement applies to register your battery system with the grid, and it details the terms, rates, and conditions under which the battery interacts with the grid.You should receive an email from your utility to sign your Tariff Agreement 1-3 business days after your home photos are approved and you've scheduled your energy service activation with Base.
Interconnection Agreement (IA):
The Interconnection Agreement registers your battery with the grid, and it details the technical and safety requirements to connect and operate the battery with the grid.A few weeks after signing your Tariff Agreement, you should receive an email from your utility to sign your Interconnection Agreement. You may not receive this email until a few weeks after your battery installation, and you don't need to contact Base if it's taking a long time.
If you receive a reminder from Base to sign these agreements but can't find the email from your utility, please check your spam folder.