Start with one device
The easiest way to try is to connect one Shelly device to your water heater. Savings show up in the first week.
See the easiest way to startNew: Tuya, Hue, Zigbee & Matter supportMobile app released — download from Google PlayFree until end of 2026
Lower electricity bills with smart devices automatically
Optimaatti controls your Shelly, Tuya, Hue, Zigbee and Matter devices to use electricity at the most affordable times. Add a device from the app, create an automation and start saving. Free until end of 2026.
Typically 30–60 €/mo lower electricity billWorks with all electricity contracts
Works on all devices in the browser – including iPhone
Typically 30–60 €/month lower electricity bill
Works automatically - override any time
Free trial, no commitment
First time?
You don't need to know what devices to buy.
Answer three questions about your home. The app does the rest.
Answer 3 questions
Home type, biggest electricity user, who installs.
Get a shopping list
Recommended Shelly devices with prices and an install order.
See savings in euros
Metering is always included, so savings are measured, not estimated.
Start planning
In beta — free to try.
Why Optimaatti?
Real benefits in daily life
Optimaatti is not a tech hobby. It's a tool that lowers your electricity bill without effort.
Save 30–60 €/month
A typical electrically heated home saves 30–60 € per month when consumption shifts automatically to the cheapest hours.
No time required
You don't need to watch electricity prices or adjust anything manually. The app does everything automatically.
Water heater: save 30–50%
A water heater is the easiest way to start. It uses a lot of electricity and timing makes a significant difference.
Control from your phone
Android app released. Add devices, create automations and track savings directly from your phone.
Comfort stays the same
Your home stays warm and hot water is always ready. Savings come from timing, not at the cost of comfort.
Pays for itself in a week
A Shelly device costs ~15 € and the app is free. First month savings cover the device cost many times over.
New · Beta
Plan your home smart devices in 5 minutes
The AI-assisted planner asks 3–5 questions about your home and returns a priced Shelly shopping list, install order, and a clear split between electrician work and DIY.
Save on heating
Control your water heater, sauna, underfloor heating and car heater with Shelly Pro devices. Per-device metering shows savings in euros, per device.
Home automation
Lighting, motion sensors, door/window sensors and buttons. Plus/Mini in-wall devices and BLU battery sensors; scenes you build in the app.
Metering always included
Every controlled load gets its own measurement — savings shown as concrete euros, not just estimates.
Print or share as PDF
A4-friendly printout of the plan. Save it, share with an electrician, come back to the same plan later.
How it works
Answer a few questions
Housing type, biggest loads, panel space, goal. Pick savings, home automation, or both.
AI proposes devices and install order
The planner walks through your loads, picks the right Shelly model for each (PM version whenever available), and writes the proposal in plain language.
Save, print or share
Name your plan and add notes. You get an A4 PDF that goes to the electrician as-is.
In beta — feedback welcome.
Why Optimaatti?
Real savings, automatically
30–50%Typical savings on water heater electricity
Up to €60/moSavings with consumption optimization
24/7Automatic control with no effort
NEW
Android app released
Control your home's electricity use directly from your phone. Add devices, create automations and track savings — all from one app.
- Add Shelly devices directly from your phone
- Create automations and rules easily
- See savings in euros in real time
- Control devices anywhere, anytime
- Notifications directly to your phone
Optimaatti
Lower electricity bills automatically
Savings this month
47,20 €
Devices controlled
3
Electricity price now
4,2 c/kWh
What do you need?
How to get started
You can get started in a few minutes. All you need is a Shelly smart device and an electricity contract.
1
Download the Optimaatti app
Download the free app from Google Play. Sign up and you are ready to add devices.
2
A Shelly smart device (from ~15 €)
An affordable smart device that you install with your water heater, floor heating or electric radiator. Available online.
3
Add a device with the app
Add a Shelly device from your phone, choose what it controls and automation starts. Works with all electricity contracts.
How it works
How it works
Three easy steps. Setup takes less than 10 minutes.
Savings visible within the first week
1. Download the app
Download Optimaatti from Google Play and sign up for free. Add a Shelly device from the app - it is found automatically.
2. Choose what to control
Tell the app what the device controls. The app suggests the right settings automatically.
3. Enjoy the savings
The app handles the rest. See your savings in euros directly on your phone.
Our story
How Optimaatti was born
Optimaatti started from a simple need: I wanted to automatically control my home's electrical devices based on electricity prices. I bought a few Shelly relays, wrote the first version of the control logic, and quickly noticed a significant drop in my electricity bill — without any loss in comfort.
The service has evolved from a simple timer into an intelligent optimization system that can predict heating demand, leverage solar energy, and adapt to different electricity contracts — from hourly pricing to fixed rates.
Optimaatti is free until the end of 2026. As infrastructure costs grow with the number of users and controlled devices, Optimaatti will become a paid service at the beginning of 2027. Controlling a single device will always be free — we want anyone to be able to try and benefit from smart electricity control without barriers.
Who is this for?
Works with all electricity contracts
Optimaatti saves money regardless of your contract type. The way it saves just varies.
Hourly pricing
Electricity is used when it is most affordable. For example, your water heater runs at night at 3 c/kWh instead of during the day at 15 c/kWh.
- Devices use electricity automatically at the most affordable times
- Best for water heaters, heating and EV charging
Flexible contracts
Your electricity provider rewards even consumption. Optimaatti shifts usage to the most affordable times automatically.
- Consumption shifts away from the most expensive hours automatically
- See in the app when and how the automation is saving
Fixed-price contracts
By scheduling devices smartly you avoid unnecessary consumption and overheating.
- Avoid running all appliances at once and save electricity
- See your home's consumption clearly and keep life simple
Same app, different savings method depending on your contract.
See all featuresWhere to start?
The easiest way to start saving
You don't need a big renovation or technical skills. One device is enough and savings show up right away.
Water heaters save the most
A water heater is the best first target: it uses a lot of electricity and timing alone can save 30–50% on its electricity cost.
See the water heater savings exampleAvoid unnecessary electricity peaks
When your home appliances are not all on at the same time, your bill goes down. Optimaatti spreads the load automatically.
Read how this worksFeatures
Everything you need to save on electricity
Simple tools that lower your electricity bill without effort.
Automatic scheduling by electricity price
The app shifts your smart devices to the most affordable times. You don't need to check prices yourself.
Flexible electricity support
With a flexible contract, the app shifts consumption to the cheapest times automatically. See in the app when the automation is active.
Works without internet too
Devices follow the optimized schedule even if the internet connection drops.
Works on your phone
Check status, see savings and control devices from your phone - anywhere, anytime.
Secure and private
Family members get their own roles (owner, member, viewer). Your data stays safe.
Savings shown in euros
See directly in the app how much the automation has saved in money, energy and emissions.
Roadmap
Coming soon
We are constantly developing new features.
Coming soon
Answer 3 questions — get a Shelly shopping list
Tell us your home type, your biggest electricity user, and who installs. Get a ready device list with prices, an install order, and a clear split between electrician work and DIY. Savings show up in euros because metering is always included.
Coming soon
Smart EV charging
Your car charges automatically at the most affordable times. See the status in the app and override any time.