# Automate water bill calculations with Telegram and Gemini: n8n workflow

> Started by an incoming Telegram message, and works across Google Sheets and Telegram. It hands the judgement calls to Gemini.

Source: https://millionrounds.com/workflow/automate-water-bill-calculations-with-telegram-and-gemini (Millionrounds; every figure on the page links to its filing or article)

[Automation library](https://millionrounds.com/workflows) · [Chat assistants](https://millionrounds.com/workflows?category=Chat+assistants#library)

# Automate water bill calculations with Telegram and Gemini

Started by an incoming Telegram message, and works across Google Sheets and Telegram. It hands the judgement calls to Gemini. 13 steps, 1 branch: a working afternoon to understand properly.

Medium Calls a model: Gemini

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fautomate-water-bill-calculations-with-telegram-and-gemini)

**13 steps** Medium: a working afternoon

**1** Branch: places the flow splits

**0** Loops or waits

**2** Services it connects to

## The flow

Starts it 1 Model 3 Logic 5 Service 4

The steps in the order they run, from what starts it.

- 1 **Telegram Trigger** Telegram trigger *Starts it*
- 2 **Google Gemini Chat Model** Lm Chat Google Gemini *Model*
- 3 **Structured Output Parser** Output Parser Structured *Model*
- 4 **Redirect Message Types** Switch *Logic*
- 5 **Image Explainer** Chain Llm *Model*
- 6 **Get a file** Telegram *Service*
- 7 **Get row(s) in sheet** Google Sheets *Service*
- 8 **Find Latest Row** Code *Logic*
- 9 **Calculate Bill** Code *Logic*
- 10 **Prepare Data for Sheet** Set *Logic*
- 11 **Append row in sheet** Google Sheets *Service*
- 12 **Format Bill Message** Code *Logic*
- 13 **Send Bill to Telegram** Telegram *Service*

## How it's built

- **Starts on:** An incoming Telegram message
- **Steps:** 13, with 1 branch
- **Size:** Medium: a working afternoon
- **Connects to:** Google Sheets, Telegram
- **Model:** Gemini

## Questions

What does it need to run?

An n8n account, plus your own Google Sheets and Telegram accounts, and a key for Gemini. You connect your own accounts after importing it; none are included.

What starts it?

It starts on an incoming Telegram message.

Does it use AI?

Yes. It calls Gemini. Model calls are billed by the provider, not by n8n.

How long does it take to set up?

Plan an afternoon. 13 steps is enough that you should read each one before running it.

How do I import it?

Copy the workflow, open a new workflow in n8n and paste. The steps appear on the canvas, ready for your own accounts.

**Before you run it**

Nothing here has been tested by us. It is somebody's working automation, read and described from its own steps. Treat the connections it wants as a list of accounts it will touch, and read the 13 steps before you point it at anything that matters.

## Run it in n8n

- **Create your n8n account** Free to start. n8n is where the workflow runs. [Create an n8n account ↗](https://millionrounds.com/n8n)
- **Download the workflow** Free with a Millionrounds account. [Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fautomate-water-bill-calculations-with-telegram-and-gemini)
- **Paste it into n8n** Open a new workflow in n8n and paste. Then connect your own accounts.

Stored with the author's traces removed: canvas notes, instance identifiers, saved credential names and any live document they had left behind.

## Connects to

Each opens the other workflows that use it.

[Google Sheets](https://millionrounds.com/workflows?service=Google+Sheets#library)[Telegram](https://millionrounds.com/workflows?service=Telegram#library)

## Workflows like it

Also chat assistants, with the same services where possible, closest in size first.

- [**AI WhatsApp assistant – smart message responder** 13 steps · calls a model · Google Sheets, WhatsApp](https://millionrounds.com/workflow/ai-whatsapp-assistant-smart-message-responder)
- [**AI agent chatbot + LONG TERM memory + note storage + Telegram** 13 steps · calls a model · Google Docs, Telegram](https://millionrounds.com/workflow/ai-agent-chatbot-long-term-memory-note-storage-telegram)
- [**AI-Powered Children's Arabic Storytelling on Telegram** 13 steps · calls a model · Telegram](https://millionrounds.com/workflow/ai-powered-children-s-arabic-storytelling-on-telegram)
- [**AI-powered real estate scout & market analyzer with DeepSeek** 13 steps · calls a model · Telegram](https://millionrounds.com/workflow/ai-powered-real-estate-scout-and-market-analyzer-with-deepse)
- [**Allow users to send a sequence of messages to an AI agent** 13 steps · calls a model · Supabase, Telegram](https://millionrounds.com/workflow/allow-users-to-send-a-sequence-of-messages-to-an-ai-agent)
- [**Analyze food ingredients from Telegram photos with Gemini** 13 steps · calls a model · Airtable, Telegram](https://millionrounds.com/workflow/analyze-food-ingredients-from-telegram-photos-with-gemini)