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

# Energy API documentation

> Connect your users' tariffs, price every device and offer VPP programs.

These docs are for OEMs. Energy suppliers and VPP operators use the [Fleet API](/docs/fleet-api/guides.md).

Flatpeak connects your devices to your users' energy tariffs in every market. You integrate once, against the Energy API, and the same integration opens your devices to Virtual Power Plant (VPP) programs.

## Two tracks

Start with tariffs. VPP is optional and adds enrollment, instructions and telemetry to the same devices.

> [card] [Tariffs](/docs/energy-api/guides/quickstart.md)
>
> Users connect their tariff in your app. You read prices, price windows and costs for every device.

> [card] [VPP](/docs/energy-api/guides/vpp/quickstart.md)
>
> Users join VPP programs in your app. You fetch instructions, apply them and confirm them.

## Who does what

| Flatpeak | You |
| :- | :- |
| Connects the tariff and keeps it current | Embed Connect, or build your own UI on the Connect API |
| Returns prices, price windows with solar forecasts, and costs per device | Plan the device around cost |
| With VPP: runs programs, enrollment and consent, bounds dispatch to your guardrails and keeps the rewards ledger | Fetch instructions, apply them and confirm them |
| With VPP: contracts and bills the VPP operators | Set the price of fleet access |

Start with [Key concepts](/docs/energy-api/guides/key-concepts.md), check [coverage](https://flatpeak.com/coverage) for your markets, and [contact support](/docs/support) if you need help.


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