Otso
Residential solar parks

Turn your home into an energy producer

A modern residential solar park can cover up to 90% of your household electricity needs. Add a battery to boost independence even further. Systems are built to last 25+ years.

WHY CHOOSE SOLAR

An investment that pays back

Residential solar has become affordable and highly efficient. It’s one of the best ways to reduce your power bill and increase property value.

Payback in 6–10 years

A typical home system pays back in 6–10 years. After that, your produced energy is effectively free for the next 15–20 years.

Up to 90% lower power bill

Depending on system size and usage, you can cut electricity costs by up to 90%. Add a battery and become almost fully independent.

Increases home value

Homes with solar are more attractive to buyers and can increase property value by up to 4%.

25+ year lifespan

Premium panels are guaranteed to produce for at least 25 years. Many systems perform for 30–35 years or more.

Extra income from frequency services

With the right setup, you can participate in frequency services and earn extra income while supporting grid stability.

Protection against rising prices

Lock in your energy costs and protect yourself against future price increases for the next 25+ years.

PROCESS

How your home solar system is delivered

We keep the process simple and transparent — from first call to a working system.

01

Consultation

Contact us and we’ll schedule a free consultation. We map your needs, roof condition and preferences.

02

Design

We create a precise design and define the optimal system size. You receive a clear offer with payback estimates.

03

Installation

Our experienced team installs quickly and cleanly. Typical installation time is 2–5 days.

04

Commissioning

We connect, configure monitoring and walk you through the system. You’re ready to produce clean energy.

SYSTEM TYPES

Choose the right setup

We offer three system types to match different needs and budgets.

MOST POPULAR

Grid-tied system

Best value for money. Produce power during the day and export the surplus. At night or during low production, you use the grid.

  • Lowest upfront cost
  • Fast payback (6–8 years)
  • Export surplus to the grid
  • No battery required
RECOMMENDED

Hybrid system with battery

Optimal balance — produce energy, store surplus and use it in the evening/night. Keep grid access as a backup.

  • Higher independence
  • Backup power capability
  • Maximize self-consumption
  • Frequency services ready
OFF-GRID

Off-grid system

Fully autonomous without grid connection. Ideal for cabins, remote homes and locations where grid access is limited.

  • 100% independence
  • No grid connection needed
  • Larger battery capacity
  • Generator support option
COMPONENTS

What your solar system includes

We use premium components from trusted manufacturers. Every part is chosen for durability and performance.

Solar panels

Mono-crystalline panels with efficiency up to 22%. 25-year performance warranty and up to 30+ years lifespan.

Inverter

Hybrid or grid inverter that converts DC from panels into AC for your home. Includes an easy monitoring app.

Battery (optional)

LiFePO4 lithium batteries (typically 5–20 kWh). Safe, long-lasting and ideal for storing daytime production.

Mounting system

Strong aluminium structures suitable for all roof types. Built to last as long as the system itself.

FAQ

Frequently asked questions

It depends on your annual electricity consumption and available roof area. For many homes, a 5–10 kW system is a great starting point. We provide a free analysis and recommend the optimal setup.

Panels still produce on cloudy days, but less. Winter production is lower, and grid-tied systems simply use the grid when needed. Hybrid systems can also use stored energy from the battery.

Most roofs work — tile, metal or fibre cement. South-facing at 30–45° is ideal, but east/west also performs well. We can assess your site for free.

Very little. Rain often cleans panels naturally and the system runs automatically. We recommend checking 1–2 times per year and cleaning if needed. We also offer maintenance plans.

Panels: 25-year performance warranty. Inverter: 10–15 years. Battery: 10 years or 6000 cycles. Installation: 5-year workmanship warranty. Manufacturer warranties apply within Europe.

From time to time, support programs are available in Estonia. We’ll help you understand current options and prepare documentation if needed. Contact us to check what’s available right now.

Start your energy independence journey

Request a free consultation and quote. We’ll estimate savings and payback based on your actual consumption.