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# Software Requirements Specification (SRS) for GreenTech Solutions

## 1. Introduction

### 1.1 Purpose
This document describes the software requirements for the GreenTech Solutions' Energy Management System (EMS). The EMS aims to optimize energy consumption and reduce carbon footprint for commercial buildings.

### 1.2 Scope
The EMS will monitor and control energy-consuming devices, provide real-time analytics, and offer recommendations for energy savings. The system will integrate with existing Building Management Systems (BMS) and IoT devices.

## 2. Overall Description

### 2.1 Product Perspective
The EMS will be a web-based application with a responsive design, accessible via desktop and mobile devices. It will consist of the following components:
- **Energy Monitoring Dashboard**: Real-time visualization of energy consumption data.
- **Device Management Module**: Control and configure connected devices.
- **Analytics Engine**: Process historical data to identify trends and patterns.
- **Recommendation System**: Provide actionable insights for energy savings.

### 2.2 User Classes and Characteristics
- **Facility Managers**: Primary users responsible for monitoring and controlling the EMS.
- **Building Occupants**: Secondary users who can view energy consumption data and receive recommendations.
- **IT Administrators**: Users responsible for system maintenance and troubleshooting.

## 3. System Features

### 3.1 Energy Monitoring
- **Data Collection**: Gather energy consumption data from connected devices at regular intervals.
- **Data Visualization**: Display real-time and historical data in charts, graphs, and tables.
- **Alerts and Notifications**: Notify users of unusual energy consumption patterns or device malfunctions.

### 3.2 Device Management
- **Device Discovery**: Automatically detect and register new devices on the network.
- **Device Control**: Allow users to turn devices on/off, adjust settings, and schedule operations.
- **Device Groups**: Organize devices into groups for collective control and monitoring.

### 3.3 Analytics and Recommendations
- **Data Processing**: Clean, validate, and aggregate raw data for analysis.
- **Trend Analysis**: Identify trends and patterns in energy consumption data.
- **Recommendation Generation**: Provide actionable insights for energy savings based on historical data and best practices.

## 4. Other Nonfunctional Requirements

### 4.1 Performance
- The EMS shall process and display real-time data with a maximum delay of 5 seconds.
- The system shall support up to 1,000 concurrent users without significant performance degradation.

### 4.2 Security
- The EMS shall implement role-based access control (RBAC) to restrict user access to specific features and data.
- The system shall encrypt sensitive data both at rest and in transit using industry-standard encryption algorithms.

### 4.3 Software Quality Attributes
- **Usability**: The EMS shall have an intuitive and user-friendly interface, requiring minimal training for new users.
- **Reliability**: The system shall have an uptime of at least 99.9% during normal operating hours.
- **Maintainability**: The EMS shall be designed with modular components to facilitate future updates and enhancements.

## 5. Appendices

### 5.1 Glossary
- **BMS**: Building Management System
- **IoT**: Internet of Things
- **EMS**: Energy Management System

### 5.2 References
- ISO/IEC/IEEE 29148:2011 - Systems and software engineering - Life cycle processes - Requirements engineering
- IEEE 830-1998 - Recommended Practice for Software Requirements Specifications