HOME BATTERIES, ENERGY STORAGE AND CHARGING SOLUTIONS
Watti sizes and supplies energy management solutions for homes, industry and farms – from installation to commissioning.
IMPORTER
Watti is the official importer of Emaldo in Finland. Home and commercial battery storage systems, charging solutions, and the Grid Rewards service come from Emaldo – Watti takes care of design, sizing, installation, commissioning, and provides local support.
All our home battery and commercial battery solutions are Emaldo products – straight from the manufacturer.
Emaldo's reserve market programme earns the battery up to 90 €/month. Reserve market earnings may vary depending on the contract.
Warranty, spare parts, and support from a single source. Watti sizes, installs, and services in Finland.
Who it's for
Lower, predictable electricity bills, revenue from the reserve market and self-sufficiency for your home.
Explore home batteries
Cut peak demand charges, safeguard production and earn extra revenue from the reserve market.
Explore business solutions
Keep your farm running during power cuts and lower your energy bills. Store solar energy for peak-price hours.
Explore agricultural solutionsSavings calculator
Answer just a few questions to get an estimate of your savings, reserve market income and payback period.
You can find this figure on your electricity bill or in your energy supplier’s online portal.
I already have solar panels
Solar panels already installed.
Is the property heated with electricity?
Heat pump, storage heating or direct electric heating.
Do you charge an electric vehicle at home?
Charging your car using your home’s electricity supply.
The guaranteed return depends on your electricity supplier.
Savings and returns estimate
Example calculationAdjust your answers to see your personalised estimate.
TOTAL BENEFIT
1 834 € / year
Electricity bill savings
708 € / year
Reserve market earnings
1 126 € / year
Payback period
approx. 5,6 years
Our recommendation for your home
Emaldo Power Store
Connects to your existing solar PV system.
Recommended battery capacity 20,48 kWh
Savings are based on the average electricity price; guaranteed returns are based on the latest figures from Emaldo's Grid Rewards calculator (3 years, at least 3 batteries). A detailed calculation will be provided during the assessment.
November promotion
To celebrate the Watti.com relaunch, everyone who requests a home battery quote between 15.10 - 30.11. will be entered into a prize draw to win an ABOK Elux 1 portable power station, worth 595€ incl VAT.
Finance
From 160 €/month
Finance your home battery with instalment payments or lease your energy storage system, so you start saving immediately without tying up capital. Finance partners: Grenke Rahoitus Oy, Siemens Financial Services.
Case studies
Jyväskylä
Emaldo Power Store, 15.36 kWh + existing 9 kWp solar installation
Solar power is stored for evening consumption, with the remainder bought during the cheapest hours. Backup power requires a separate Backup Power unit.
Saves 1 850 €/year
Illustrative imageSavonlinna
ABOK power solution and 5.12 kWh battery
A weak grid connection and frequent long power cuts were solved with a battery and solar panels.
Saves 640 €/year
Illustrative imageSeinäjoki
51 kWh energy storage system, robotic milking barn and grain dryer
Peak power demand during the drying season was shaved with the battery, and the farm participates in reserve markets via Checkwatt.
Saves 9 400 €/year + reserve market revenue
Why Watti?
From home batteries to industrial megawatt-scale systems – from a single supplier.
The systems are suitable for reserve markets and grid balancing.
Installation, commissioning and maintenance are provided through a domestic partner network.
Homes, farms and businesses across Finland.
Our aggregators enable earnings for your battery fully automatically.
We size the complete system to your site: battery, charging, solar and control.
1 000+
systems delivered
20+ MWh
installed battery capacity
10-year warranty
varies by product
24 h
response time to quote requests
We size your system and calculate the figures based on your property details. We reply within 24 hours.