What RP3 does

RP3 (OÜ RP Kuubis) is an Estonian private company founded in 2005 that designs, builds, and maintains off-grid and hybrid electrical power systems and custom electrical distribution boards for properties without grid access or requiring energy independence. Its core offering consists of bespoke systems that combine solar PV panels, small wind turbines, battery banks (primarily Pytesi LFP lithium-ion), charge controllers, inverters (Victron Energy and Fronius GEN24 series), and backup generators, each engineered to the customer's location, load profile, and usage pattern. The company emphasizes custom design over standardized product, positioning itself as the "A-Team" for off-grid installations, using a mobile installation van-workshop and an in-house workshop for custom electrical panels.

The company serves a mix of customers: remote residential properties (year-round homes, summer cottages, island properties where grid connection is uneconomic), public-sector and research clients (RMK-managed visitor centers on Naissaar island, Tartu University Chemicum laboratory), and utility pilots (Elektrilevi three-site solar-plus-storage pilot). Geo

Name

RP3

Legal name

OÜ RP Kuubis

Website

https://rp3.ee

Company type

Private

Founded year

2005

Operating status

Operating

Headcount range

1–10 employees

Short description

RP3 is an Estonian private company that designs, builds, and maintains custom off-grid and hybrid solar-plus-storage electrical systems for remote residential properties, government facilities, and research institutions, primarily in Estonia.

Ownership category

akta.pro rank

Product category

Off-Grid Renewable Energy Systems

NAICS

Solar Electric Power Generation (221114)

SIC

Switchgear & Switchboard Apparatus (3613), Electric Services (4911)

akta.pro primary industry

Solar Project Development & IPP (Utility-Scale & Rooftop) (EUAMABAA)

akta.pro secondary industries

Backup & Resilience Power Systems (Standby Generators, Critical Facilities) (EUACALAG), Owner’s Engineering, Grid Interconnection & System Studies (PVsyst/Performance Modeling, Protection Studies) (EUACAGAG)

Keywords

• Off-grid electrical systems
• Renewable energy systems
• Solar power installations
• Hybrid power systems
• Battery storage solutions

Headquarters

HQ city

Tallinn

HQ country

Estonia

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Supply Chain, Personnel, Operations, Technology or R&D, Marketing or Sales

Revenue model

1. Off-grid electrical system design and installation: Custom design, construction, and maintenance of off-grid electrical systems that combine solar panels, wind turbines, battery banks, and inverters. Systems are tailored to individual client needs and locations.
2. System maintenance and monitoring services: Ongoing maintenance services and remote monitoring capabilities for installed systems, using Victron Energy components that enable internet-based system monitoring.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

RP3 designs, builds, and maintains custom off-grid and hybrid electrical power systems that combine solar PV panels, wind turbines, battery banks, charge controllers, and inverters for properties without grid access or where grid connection is uneconomical. Each system is bespoke-engineered for the client's location, energy consumption patterns, and seasonal or year-round usage. The company also provides ongoing remote monitoring and maintenance services for installed systems.

Product overview

RP3 (OÜ RP Kuubis) is an Estonian off-grid renewable energy company operating since 2005, specializing in the design, construction, and maintenance of complete off-grid electrical systems. The company primarily offers custom-engineered off-grid electrical solutions that integrate solar panels (PV), wind turbines, battery storage banks, charge controllers, inverters, and backup generators. They provide both pure off-grid systems for remote properties without grid access and hybrid systems with grid backup capability using Fronius GEN24 inverters. Component brands commonly used include Victron Energy controllers and inverters, Pytesi LFP batteries, and Fronius equipment. The company operates an installation van-workshop and workshop for custom electrical panels, enabling quality installations and rapid response to system failures.

Differentiator

Problem solved

Functional benefit

Products and services

• Off-Grid Electrical Systems Complete custom-engineered off-grid electrical systems combining solar panels, wind turbines, battery banks, charge controllers, and inverters for properties without grid connection; designed, built, and maintained by RP3 for residential, government, and research customers.
• Hybrid Power Systems

Named customers4 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Three partnerships are on record, tiered core and key.

• Victron EnergycoreTechnology or IntegrationPrimary component supplier for off-grid systems. Victron Energy provides inverters, charge controllers, and monitoring systems used in RP3 installations. Their products enable remote internet-based system monitoring.
• PytesicoreTechnology or IntegrationSupplier of LFP (lithium iron phosphate) batteries used in off-grid systems. Pytesi LFP batteries are preferred for their quality and long warranty periods.
• Fronius (GEN24 series)keyTechnology or IntegrationFronius GEN24 series inverters are used in hybrid full backup systems that can operate during grid outages, providing seamless transition between grid-tied and off-grid modes.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Schneider Electric: Global electrical equipment major offering hybrid inverters, backup power systems, and microgrid solutions; competes with RP3 in the residential backup-power segment as part of a much broader portfolio.
• ABB: Multinational electrical equipment and automation company with switchgear, distribution boards, and microgrid offerings; directly comparable to RP3's custom electrical distribution board capabilities at industrial scale.
• SMA Solar Technology: Major German inverter manufacturer with hybrid and off-grid product lines; comparable technology to what RP3 integrates (alongside Fronius and Victron) into its custom systems.

Direct peers

• Solcellspecialisten: Swedish residential and off-grid solar installer; overlaps with RP3's remote-property and backup-power use cases in a similar Nordic market context.
• Midsummer: Swedish thin-film CIGS solar manufacturer and installer for rooftop applications; comparable in delivering integrated solar PV solutions to Nordic residential customers, though operating at larger scale.
• Sunwind Energy: Nordic off-grid and hybrid renewable energy system integrator selling solar, wind, and battery solutions to remote residential and cabin customers — directly comparable to RP3's product offering and end-customer profile.
• SkanSolar: Estonian solar PV installer focused on residential and commercial rooftop systems; overlaps with RP3 on the grid-tied solar side of its hybrid business and shares the same domestic market.

Others

• Victron Energy: Dutch manufacturer of off-grid inverters, chargers, and monitoring systems; serves as a core component supplier to RP3 and operates in the same end-market for system integrators.
• Fronius International: Austrian inverter manufacturer whose GEN24 hybrid series RP3 specifies for backup systems; adjacent ecosystem participant rather than direct competitor.

Regional players

• Sunly: Estonian renewable energy developer focused on larger-scale solar and storage projects; comparable region and technology stack but operates at utility scale rather than residential off-grid.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks6 records

Key highlights5 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about RP3