Smart Home Spot Price Apps: Who Else Is Solving This?
An honest look at the competitive landscape — open-source scripts, Home Assistant, clever-PV, and Tibber compared. Who covers the Baltics, who requires switching suppliers, and what to look for.
The Automation Gap
Dynamic electricity pricing is now reality for millions of households in Estonia, Latvia, Lithuania, and Finland. Hourly spot prices swing by a factor of three or more on a typical day — meaning a water heater that runs at 7 AM instead of 3 AM costs two to three times as much. Most people know this. Most people still don't automate around it.
The tools to fix this exist. A growing ecosystem of apps, scripts, and platforms lets households shift water heater, heat pump, and EV charging loads to the cheapest hours automatically. But the options look very different from each other — and most are not designed for the Baltic market.
Typical daily price spread
2–5×
cheapest vs. most expensive hour in Nordic/Baltic markets
Daily runtime needed
2–4 hrs
minimum for a standard 200 L water heater
Annual savings potential
€150–600
per household with automated scheduling
Three Ways to Solve It
The solutions fall into three broad categories, each with a different target user, setup complexity, and feature set.
Open-source scripts
Scripts that run directly on the Shelly device itself, fetching NordPool prices and switching the relay without any external server or account. No subscription, no app, no data leaves your network.
✓ Free, private, works indefinitely
✗ Requires developer knowledge to install and configure
Home automation platforms
Home Assistant with NordPool integration gives advanced users complete control — price-based automations for every device in the house. Very powerful once running, but needs a dedicated Raspberry Pi or server.
✓ Highly flexible, large community
✗ High setup barrier, hardware required
Dedicated apps
Cloud-based apps that handle the scheduling logic, UI, and device communication for you. Create an account, connect a device, set your rules. No scripts, no hardware.
✓ No-code, savings tracking, managed updates
✗ Subscription cost, device ecosystem may be limited
Who Is Out There?
Here is an honest comparison of the main solutions available as of 2026. The table focuses on what matters for Baltic and Nordic households.
Shelly scripts
shelly-porssisahko / Spot-hinta.fi
Home Assistant
Nord Pool + Shelly integration
clever-PV
Germany
Tibber
SE / NO / DE / NL
Volton
EE
Gridio
EV charging · 27 EU countries
Elewatt
EE / LV / LT / FI (more coming soon)
| Solution | Type | Device control | Baltic/Nordic | Savings tracking | Supplier | Laitteet |
|---|---|---|---|---|---|---|
Shelly scripts shelly-porssisahko / Spot-hinta.fi | Script | ✓ | ✓ | — | Any supplier | Vain Shelly |
Home Assistant Nord Pool + Shelly integration | Platform | ✓ | ✓ | — | Any supplier | 10 000+ laitetta |
clever-PV Germany | App | ✓ | — | — | Any supplier | Avoin (SG-Ready) |
Tibber SE / NO / DE / NL | App | ✓ | — | ✓ | Must switch | ~15 merkkiä |
Volton EE | App | ✓ | — | ✓ | Any supplier | Vain Volton |
Gridio EV charging · 27 EU countries | App | ✓ | ✓ | ✓ | Any supplier | BMW, Tesla, VW… |
Elewatt EE / LV / LT / FI (more coming soon) | App | ✓ | ✓ | ✓ | Any supplier | Shelly + Daikin (kasvava) |
Data as of March 2026. Baltic market = Estonia, Latvia, Lithuania, Finland. Savings tracking = built-in cost/savings reporting.
Why the Baltics and Nordics Are Different
Estonia, Latvia, Lithuania, and Finland all operate on NordPool day-ahead spot pricing — the most transparent electricity market in Europe. Day-ahead prices are published each day at 14:00, giving automation tools a full 10+ hours of predictable data before the cheapest window even starts.
This combination of hourly price transparency, high smart meter penetration, and the specific appliances common in the region — 200 L electric water heaters, heat pumps, EV chargers — makes demand shifting unusually effective here. Savings that are theoretical elsewhere are practical in Tallinn, Riga, or Helsinki.
The key difference
You don't need to switch electricity supplier to benefit from spot prices in Estonia, Latvia, Lithuania, or Finland. Your current supplier already passes NordPool prices through to your bill.
Open-Source vs. App: The Real Trade-off
The open-source Shelly scripts — particularly shelly-porssisahko (Finland) and the Spot-hinta.fi scripts — are genuinely excellent. They support the same Baltic/Nordic markets, update device schedules daily, and cost nothing. For a developer or technically confident user, they are hard to beat.
The trade-off is everything around the scheduling: no web dashboard, no savings history, no filter rules (e.g. 'run at least 3 hours between 6 AM and 10 PM'), no email alerts when the price spikes. The app layer adds the experience that makes the tool usable for the other 95% of households.
🛠 Open-source scripts are great if you...
- • Are comfortable flashing firmware and editing config files
- • Don't need a UI or savings history
- • Want zero monthly cost and full local control
📱 A dedicated app is better if you...
- • Want to set it up in minutes without reading documentation
- • Want to see how much you've saved month by month
- • Want filter rules, notifications, and multiple devices in one place
What to Look for When Choosing
Whichever solution you consider, ask these five questions before committing:
Does it support your country's NordPool price zone? (EE, LV, LT, FI, SE, NO, DK)
Does it work with your current electricity supplier, or do you need to switch?
Can you set minimum runtime rules — e.g. 'run at least 4 hours per day, but not between 6 and 8 AM'?
Does it track and show how much you've actually saved over time?
What is the real setup time? Hours of configuration or minutes?
Elewatt covers the Baltic and Nordic market
No supplier switch needed. Works with your existing Shelly devices. Set filter rules, track savings, get notifications. Free to start.
Try Elewatt freeUsein kysytyt kysymykset
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