Louna Solar Optimi

Solar panels with boosters for your home

The best choice for a plot with tree shade, for example

From 10 panels

Annual yield of about 3,500kWh

You receive maximum power from each panel

Web-based production monitoring

from €10,100

The best panel package for your roof

High-quality solar panels
Our Finnish-made solar panels are manufactured by Salo Tech Oy. Our panels are well suited to Nordic conditions. The mounting racks are also made in Finland.

The package with guaranteed durability
The solar panels manufactured by Salo Tech have a 25-year power output guarantee. The mounting racks have up to a 30-year guarantee. You also get guarantees for other parts, meaning that the functionality of the panels is guaranteed for years to come.

The efficient smart package
The best choice for a plot in the shade, as the package includes panel-specific boosters and the smart inverter has web-based monitoring of production.

Save on the electricity bill
Pay less for both purchased electricity and electricity transmission when you produce electricity yourself. In addition, we will pay you a fair refund for the solar electricity that you are not consuming yourself.

High-quality Finnish-made solar panels

The price of Louna Solar Optimi package includes


  • Driving distance of 100km from Salo.
  • Installation on pitched roof, brick-tile roof, bitumen or sheet-metal roof (as a uniform panel set).
  • Lifting work if the eaves height of the property does not exceed 3.5 metres.
  • Connecting the inverter to the Internet.
  • The solar panel package is connected with the property's free fuse outputs.


  • Safety switch
  • About 50 metres of DC cable and about 4 metres of AC cable


  • Continuous monitoring and maintenance service for the solar panel system.
Aurinkopaneeli edestä ja takaa.

How do I monitor solar-panel yield?

The Louna Solar Optimi solar panel system has a Solar Edge inverter which allows you to monitor your own power generation and get maximum yield from each panel. In this video, we present the generating control system that shows day-by-day and hourly yields and yield numbers for each panel. The video is in Finnish.

Technical data of the Louna Solar Optimi package


Basic information about solar panels

Panel manufacturer Salo Tech Oy
Panel type Mono-crystal panel
Panel yield 400Wp
Panel quantity from 10
Total system yield from 4,000Wp
Surface area m² from 19.95m²
Weight of the entire panel package in pitched roof installation about 15kg/m2
Weight of the entire panel package in flat-roof installation about 15 kg/m2, or depending on the property, if loose weights are used.

Every panel goes through quality inspections and power output testing at the factory. Quality assurance guarantees that our panels perform as advertised.

The rated power of the solar panel is expressed in Wp (watt-peak). The rated power of the solar panel is indicated in Wp (watt-peak). The rated power of the panel has been measured in standard operating conditions. The actual power varies depending on the radiation power of the sun, the angle of installation of the panel and the compass direction, possible shadow areas and outdoor temperature.


Other parts

Inverter SolarEdge SE
Boosters SolarEdge S440
Brackets Salo Tech Oy's brackets according to roof type and material. Material is stainless or acid-resistant steel.
Mounting racks Salo Tech Oy's mounting racks. Material recycled aluminium.
Mounting racks and accessories Salo Solar's PDF brochure on mounting racks and accessories for pitched roofs



Installation schedule

  • Installation by order-book.
  • Louna Solar Optimi packages take 1 to 2 days to install.

Warranty periods

Solar panels 15 years warranty for manufacturing defects and material
Mounting racks 30 years warranty
SolarEdge inverter 12 years warranty
SolarEdge boosters 25 years warranty
Other products and installation 10 years warranty
Guarantee of electricity generation Salo Tech Oy grants a 25 years electricity generation guarantee for the solar-panels they manufacture. This means that even after 25 years, the panels will still have at least 80% of the promised rated yield.


Services with additional charges (including VAT 24%)

Use of a crane if the eaves height of the property exceeds 3.5 metres. €180/day
Driving charge if the installation site is further than 100 kilometres from Salo. €1.30/km
Additional charge if connecting the inverter to the Internet requires a separate visit. €200
Extending inverter warranty period to 20 years €500
Extending inverter warranty period to 25 years €700
Installation of additional fuses €300
Grounding cable and required additional work Determined case by case
Installation controls for devices other than hot-water boilers Determined case by case
Visit of the building supervisor in the final inspection According to a separate agreement


Are you interested? Contact us!

What do we mean by metering method?

General Electricity

When you opt for our general electricity contract, you always pay the same price (24/7). This metering method is most commonly used in smaller homes; e.g. in apartment blocks and terraced houses.

Night-time Electricity

When you opt for night-time electricity metering, the price for electricity varies according to time of day; day-time metering applies e.g. from 7 AM to 10 PM, and night-time metering applies from 10 PM to 7 AM. Please note that different distribution network suppliers apply different cut- off times for metering, and you should take this into consideration when estimating consumption. Night-time metering is very popular in terraced and detached houses where the primary heat source is direct electrical heating.

Seasonal Electricity

Your electricity consumption can also be metered seasonally either as winter-day energy and other period energy. This metering method is popular with detached houses and vacation homes, which have water- circulated, heat-storing floor-heating and dual-rate metering. During summer season and winter nights, electricity is most affordable.