> ## Documentation Index
> Fetch the complete documentation index at: https://docs.voltview.co.uk/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

> VoltView API Documentation - Energy Monitoring and Management

## Welcome to VoltView API

The VoltView API provides comprehensive energy monitoring and management capabilities for multi-site businesses, enabling real-time tracking of energy consumption, cost analysis, and environmental impact metrics.

## API Suite Overview

Our API suite includes the following core services:

<CardGroup>
  <Card title="Site Management API" icon="building">
    Manage and monitor multiple site locations
  </Card>

  <Card title="Energy Consumption API" icon="bolt">
    Access detailed energy usage data
  </Card>

  <Card title="Cost Analysis API" icon="chart-line">
    Track and analyse energy costs
  </Card>

  <Card title="Environmental Metrics API" icon="leaf">
    Monitor carbon emissions and energy efficiency
  </Card>

  <Card title="Utility Supplier API" icon="plug">
    Integrate and collect data from utility suppliers
  </Card>

  <Card title="Bill Validation API" icon="receipt">
    Validate and audit utility bills for accuracy
  </Card>
</CardGroup>

## Getting Started

Register for a VoltView account to receive your API credentials [****here****](https://docs.voltview.co.uk/register).

## Authentication

The VoltView API uses a VoltView API key for authentication. Include your API key directly on every request:

```json theme={null}
{
  "x-api-key": "your-api-key"
}
```

### Authentication Error Response

If authentication fails, you will receive an HTTP 401 Unauthorized response with a detailed error message in the JSON response body.

## Data Units

The VoltView API uses the following standardized units across all endpoints:

| Metric                  | Unit                        |
| ----------------------- | --------------------------- |
| Energy Consumption      | kWh                         |
| Power Demand            | kW                          |
| Carbon Emissions        | kg CO2eq                    |
| Currency                | GBP (£)                     |
| Time Series             | ISO 8601 format             |
| Numeric Values          | Rounded to 2 decimal places |
| Meter Point Numbers     | MPAN/MPRN format            |
| Supplier Read Frequency | Minutes/Hours/Days          |
| Reading Type            | Actual/Estimated            |