Automate water bill calculations with Telegram, Gemini AI, and Google Sheets

Open on n8n.io

$20/month : Unlimited workflows

2500 executions/month

Try free

THE #1 IN WEB SCRAPING

Scrape any website without limits

Try free

HOSTINGER

Early Deal
DISCOUNT 20%

Self-hosted n8n

Unlimited workflows - from $4.99/mo

Try free

#1 hub for scraping, AI & automation

6000+ actors - $5 credits/mo

Try free

Important notice

This workflow is provided as-is. Please review and test before using in production.

1. Workflow Overview

Automate Water Bill Calculations with Telegram, Gemini AI, and Google Sheets This workflow automates the calculation of monthly water bills. Res...

Best for

File Management automation workflows
AI Chatbot automation workflows
advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.telegramtrigger, n8n-nodes-base.switch, n8n-nodes-base.telegram, @n8n/n8n-nodes-langchain.chainllm, @n8n/n8n-nodes-langchain.lmchatgooglegemini, @n8n/n8n-nodes-langchain.outputparserstructured, n8n-nodes-base.googlesheets, n8n-nodes-base.stickynote

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by Miftah Rahmat.

Original n8n.io source

1.1 Workflow description

Title: Automate water bill calculations with Telegram, Gemini AI, and Google Sheets
Workflow name: Automate water bill calculations with Telegram, Gemini AI, and Google Sheets

Automate Water Bill Calculations with Telegram, Gemini AI, and Google Sheets

This workflow automates the calculation of monthly water bills. Residents can send a photo of their water meter along with their name via Telegram. The workflow uses Gemini AI to extract the meter reading, calculates the usage difference compared to the previous month, and updates a Google Sheet with the billing details. Finally, the workflow sends a summary back via Telegram.

Don’t hesitate to reach out if you have any questions or run into issues! 🙌

Requirements

A Telegram bot token (created via BotFather).
A Google account with access to Google Sheets.
A Gemini API key ([](Google AI Studio)).
A pre-created Google Sheet with the required columns.

Google Sheet Setup Create a new Google Sheet with the following columns: Nama, Volume Sebelumnya, Volume Saat Ini, Harga/m³, Jumlah Bayar, Beban, Total Bayar, Tanggal Input

Workflow Setup Instructions

Connect Google Sheets

Add your Google Sheets credentials in n8n.
Link the workflow to your sheet with the structure above.

Set Up Telegram Bot

Create a Telegram bot via BotFather.
Copy your bot token into the Telegram Trigger node.

Configure Gemini AI

Obtain a Gemini API key from Google AI Studio.
Add it to your n8n credentials.
The workflow will parse the meter reading from the uploaded image.

Example Calculation Previous Volume: 535 m³ Current Volume: 545 m³ Usage: 10 m³ Price per m³: Rp3.000 Fixed cost: Rp3.000 Total Bill: Rp33.000

How It Works

User sends a photo of the water meter with caption (name).
Telegram Trigger receives the message.
Gemini AI reads the meter number from the photo.
Workflow fetches previous volume from Google Sheets.
Usage and total bill are calculated.
Data is stored back into Google Sheets.
Bot replies in Telegram with detailed bill info.

Customization

Change Harga/m³ in the sheet to match your community’s water price.
Update Beban if your community uses a different fixed fee.
Edit the Telegram reply message node to adjust wording.

With this workflow, you can streamline water billing for residents, ensure accuracy, and save time on manual calculations.

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - Telegram Trigger

Type / Role: n8n-nodes-base.telegramTrigger - telegramTrigger
Config choices: Version 1.2

Block 2 - Redirect Message Types

Type / Role: n8n-nodes-base.switch - switch
Config choices: Version 3.2

Block 3 - Get a file

Type / Role: n8n-nodes-base.telegram - telegram
Config choices: Version 1.2

Block 4 - Image Explainer

Type / Role: @n8n/n8n-nodes-langchain.chainLlm - chainLlm
Config choices: Version 1.4

Block 5 - Google Gemini Chat Model

Type / Role: @n8n/n8n-nodes-langchain.lmChatGoogleGemini - lmChatGoogleGemini
Config choices: Version 1

Block 6 - Structured Output Parser

Type / Role: @n8n/n8n-nodes-langchain.outputParserStructured - outputParserStructured
Config choices: Version 1.3

Block 7 - Get row(s) in sheet

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.7

Block 8 - Append row in sheet

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.7

Block 9 - Sticky Note

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 10 - Sticky Note1

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 11 - Find Latest Row

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 12 - Format Bill Message

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 13 - Send Bill to Telegram

Type / Role: n8n-nodes-base.telegram - telegram
Config choices: Version 1.2

Block 14 - Prepare Data for Sheet

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 15 - Calculate Bill

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

3. Summary Table

Workflow	Automate water bill calculations with Telegram, Gemini AI, and Google Sheets
Complexity	advanced
Nodes	15
Categories	File Management, AI Chatbot
Author	Miftah Rahmat
Published	10 Sept 2025

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/8455/8455.json as the source template for this automation.
2. Import the template into n8n

Open n8n, import the downloaded JSON, and review each node before activating the workflow.
3. Configure credentials and variables

Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.
4. Test with sample data

Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.
5. Activate and monitor

Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Download workflow JSON Original n8n.io source File Management workflows AI Chatbot workflows

Frequently asked questions

What does Automate water bill calculations with Telegram, Gemini AI, and Google Sheets do?

Automate Water Bill Calculations with Telegram, Gemini AI, and Google Sheets This workflow automates the calculation of monthly water bills. Res...

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your File Management, AI Chatbot use case.

Miftah Rahmat

2 workflows

Nodes

n8n-nodes-base.telegramtrigger n8n-nodes-base.switch n8n-nodes-base.telegram @n8n/n8n-nodes-langchain.chainllm @n8n/n8n-nodes-langchain.lmchatgooglegemini @n8n/n8n-nodes-langchain.outputparserstructured n8n-nodes-base.googlesheets n8n-nodes-base.stickynote

Complexity

advanced

Published 10 Sept 2025

Likes 0

View on n8n.io Download Workflow

Install path: /data/workflows/8455/8455.json

Share Your Workflow

Have a useful automation to share? Publish it and help the community.

Submit Your Template How to Submit

Related Workflows

Export WordPress data to a CSV file

## Quick Overview This workflow manually exports all records from a WordPress site, converts the returned JSON into a CSV file, and saves the CSV to disk on the n8n server. ## How it works 1. Starts when you manually click Execute in n8n. 2. Fetches all available items from your connected WordPress site via the WordPress API. 3. Converts the WordPress JSON response into a CSV file. 4. Writes the generated CSV to the n8n server as `data.csv`. ## Setup 1. Add WordPress API credentials in n8n (site URL, username, and an Application Password). 2. Choose the WordPress resource to export in the WordPress node and confirm the data shape matches what you want in the CSV. 3. Update the output file path/name in the file-writing step and ensure the target directory is writable on your n8n host (for example `/home/node/.n8n/data.csv`).

View

Aggregate shipment tracking statuses with FedEx, UPS and DHL

## Quick Overview This workflow runs every 15 minutes to fetch active shipments from an n8n Data Table, query FedEx, UPS, or DHL tracking APIs with circuit-breaker protection, normalize each response into a shared status schema, and upsert the latest status back into the same table. ## How it works 1. Runs every 15 minutes on a schedule. 2. Loads all rows from the n8n Data Table `shipment_tracking` and filters out shipments already marked as DELIVERED or RETURNED_TO_SENDER. 3. Routes each remaining shipment by `carrier` and marks unsupported carriers with a canonicalStatus of UNKNOWN. 4. For FedEx, UPS, and DHL shipments, checks a per-carrier circuit breaker and either calls the carrier’s tracking API or skips the call when the breaker is open. 5. Normalizes each carrier response (or skip) into a canonical status (for example PRE_TRANSIT, IN_TRANSIT, OUT_FOR_DELIVERY, DELIVERED, EXCEPTION, UNKNOWN) while updating the breaker state based on 429/5xx/network failures. 6. Merges all carrier results and upserts the latest fields back into the `shipment_tracking` Data Table using `trackingNumber` as the match key. ## Setup 1. Create the n8n Data Table named `shipment_tracking` with columns such as `trackingNumber`, `carrier`, `canonicalStatus`, `rawStatus`, `breakerState`, `httpStatus`, and `checkedAt`, and seed it with shipments (use lowercase carriers: `fedex`, `ups`, `dhl`). 2. Add OAuth2 credentials for the FedEx Track API and select them in the FedEx HTTP request step. 3. Add OAuth2 credentials for the UPS Track API and select them in the UPS HTTP request step. 4. Add DHL API authentication (as configured for the DHL request in this template) and select it in the DHL HTTP request step. 5. Activate the workflow so workflow static data persists between runs and the circuit breaker state is maintained.

View

Clean up watched Jellyfin media and completed torrents with Transmission

## Quick Overview This scheduled workflow cleans up watched media in Jellyfin and removes completed torrents from Transmission by calling both APIs, deleting played items in Jellyfin, refreshing the Jellyfin library, and deleting torrents (including local data) once they reach the completed status. ## How it works 1. Runs daily on a schedule at the configured hour. 2. Sets the Jellyfin base URL, Jellyfin user ID, and Transmission base URL used for subsequent API calls. 3. Fetches played Movies and Episodes from Jellyfin for the configured user, deletes each returned item, and triggers a Jellyfin library refresh. 4. Calls the Transmission RPC endpoint to retrieve the required X-Transmission-Session-Id, then re-requests the torrent list using that session header. 5. Splits the Transmission response into individual torrents, filters to those with status 6 (completed), and removes each matching torrent while also deleting its local data. ## Setup 1. Add Jellyfin HTTP Header Auth credentials (for example, an API key header) and fill in the Jellyfin server URL and target Jellyfin user ID in the Variables step. 2. Add Transmission Bearer Auth credentials and set your Transmission base URL in the Variables step. 3. Confirm your Transmission instance allows RPC access at `/transmission/rpc` and that your Jellyfin server exposes the `/Users/{userId}/Items`, `/Items/{id}`, and `/Library/Refresh` endpoints for the provided credentials.

View

Need Custom Automation?

Get help designing a custom n8n workflow that connects your stack and fits your process.

Automate water bill calculations with Telegram, Gemini AI, and Google Sheets

Workflow preview

Important notice

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

Automate Water Bill Calculations with Telegram, Gemini AI, and Google Sheets

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Telegram Trigger

Block 2 - Redirect Message Types

Block 3 - Get a file

Block 4 - Image Explainer

Block 5 - Google Gemini Chat Model

Block 6 - Structured Output Parser

Block 7 - Get row(s) in sheet

Block 8 - Append row in sheet

Block 9 - Sticky Note

Block 10 - Sticky Note1

Block 11 - Find Latest Row

Block 12 - Format Bill Message

Block 13 - Send Bill to Telegram

Block 14 - Prepare Data for Sheet

Block 15 - Calculate Bill

3. Summary Table

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

2. Import the template into n8n

3. Configure credentials and variables

4. Test with sample data

5. Activate and monitor

5. General Notes & Resources

Frequently asked questions