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@@ -6,4 +6,6 @@
 4. [General Workflow](./4_General_Workflow.md)
 5. [Implementation Guide](./implementation-guide/README.md)
 6. [Example implementations: EV charging](./example-implementations/README.md)
-7. [Architecture](./architecture/README.md)
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+7. [Architecture](./architecture/README.md)
+8. [Use Cases](./use-cases/README.md)
+   - [Microgrid Aggregation](./use-cases/microgrid-aggregation.md)
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+# Use Cases
+
+This directory contains detailed documentation for various use cases supported by the DENT Protocol.
+
+## Available Use Cases
+1. [Microgrid Aggregation](./microgrid-aggregation.md)
+   - Detailed documentation for microgrid aggregation implementation
+   - Includes workflows, requirements, and implementation guideliness
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+
+# Microgrid Aggregation Use Case Document
+
+## Table of Contents
+1. [Overview](#overview)
+2. [Scope](#scope)
+3. [Workflow](#workflow)
+4. [Digital Functionalities](#digital-functionalities)
+5. [Requirements](#requirements)
+6. [Implementation Guidelines](#implementation-guidelines)
+
+## Overview
+Microgrid aggregation enables the discovery and utilization of distributed energy storage resources (batteries) to store excess energy from energy producers. This creates a more efficient and resilient energy ecosystem by allowing energy producers to store excess energy during peak production periods and retrieve it when needed.
+
+## Scope
+
+### In Scope
+- Battery discovery and selection
+- Energy storage contract creation
+- Real-time monitoring of storage capacity
+- Payment and settlement for storage services
+- Status tracking and updates
+- Support and maintenance
+
+### Out of Scope
+- Physical battery installation
+- Battery maintenance services
+- Grid infrastructure modifications
+- Hardware-level integrations
+
+## Workflow
+
+### Process Flow
+1. **Discovery Phase**
+   - Energy producer searches for available storage capacity
+   - Battery providers return catalog of available batteries
+   - Producer reviews and selects suitable storage options
+
+2. **Contract Phase**
+   - Producer initiates storage contract
+   - Provider confirms terms and pricing
+   - Contract finalization and activation
+
+3. **Operation Phase**
+   - Energy transfer to storage begins
+   - Real-time monitoring and status updates
+   - Capacity management and optimization
+
+4. **Settlement Phase**
+   - Usage calculation and verification
+   - Invoice generation
+   - Payment processing
+   - Reconciliation
+
+### Sequence Diagram
+
+![Sequence Diagram](./assets/microgrid_aggregation-sequence_diagram.png)
+
+## Digital Functionalities
+
+### 1. Discovery
+- Search for available batteries by location
+- Filter by storage capacity
+- View real-time availability
+- Compare pricing models
+
+### 2. Contract Management
+- Create storage contracts
+- Define storage duration
+- Set energy capacity limits
+- Specify pricing terms
+
+### 3. Monitoring & Control
+- Track storage levels
+- Monitor energy flow
+- View storage efficiency
+- Get status updates
+
+### 4. Payment & Settlement
+- Calculate storage costs
+- Process payments
+- Generate invoices
+- Handle reconciliation
+
+### 5. Support Functions
+- Report issues
+- Request maintenance
+- Access documentation
+- Contact support
+
+## Requirements
+
+### Functional Requirements
+
+#### 1. Battery Provider Platform (BPP)
+- Must implement search endpoint for battery discovery
+- Must provide real-time battery status updates
+- Must support storage contract creation
+- Must handle payment processing
+- Must implement monitoring interfaces
+- Must provide support endpoints
+
+#### 2. Energy Producer Platform (BAP)
+- Must implement battery search functionality
+- Must handle contract negotiations
+- Must support payment initiation
+- Must track storage status
+- Must implement error handling
+- Must provide user interfaces
+
+#### 3. Integration Requirements
+- Must follow Beckn protocol specifications
+- Must implement required API endpoints
+- Must handle asynchronous callbacks
+- Must maintain transaction states
+- Must ensure data consistency
+
+### Cross-cutting Requirements
+
+#### 1. Security
+- End-to-end encryption for all communications
+- Authentication for all API endpoints
+- Authorization for sensitive operations
+- Secure payment processing
+- Data privacy compliance
+
+#### 2. Performance
+- Response time < 2 seconds for search operations
+- Real-time status updates (< 5 second delay)
+- Support for concurrent transactions
+- Scalable storage capacity
+- High availability (99.9% uptime)
+
+#### 3. Compliance
+- Energy sector regulations
+- Data protection laws
+- Financial transaction rules
+- Grid operation standards
+- Environmental regulations
+
+#### 4. Integration
+- Beckn protocol compatibility
+- Standard API implementations
+- Event-driven architecture
+- Asynchronous communication
+- Error handling mechanisms
+
+#### 5. Monitoring
+- System health monitoring
+- Transaction tracking
+- Performance metrics
+- Error logging
+- Audit trails
+
+## Implementation Guidelines
+
+### API Implementation
+- Follow OpenAPI 3.0 specifications
+- Implement all required endpoints as per Beckn protocol
+- Use standard error codes and responses
+- Include proper API documentation
+
+### Technology Stack
+- Node.js for backend services
+- GitHub Actions for CI/CD
+- Standard monitoring tools
+- Secure payment gateways
+
+### Best Practices
+- Follow RESTful principles
+- Implement proper error handling
+- Use asynchronous operations where appropriate
+- Maintain comprehensive logs
+- Regular security audits
+
+### Testing Requirements
+- Unit testing for all components
+- Integration testing for API endpoints
+- Performance testing for scalability
+- Security testing for vulnerabilities
+- End-to-end testing for workflows
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