Sustainable Investments

What Sustainable Investments does

Sustainable Investments OÜ (also doing business as Sustainable Invest OÜ) is an Estonian private limited company founded in 2019 that develops hybrid renewable energy infrastructure combining solar, wind, and battery storage into unified systems. Headquartered in Tallinn, the company develops project sites in collaboration with landowners across Estonia and sells energy output to the grid or directly to enterprise offtakers, with a stated mission of strengthening Estonian energy security through domestically produced green electricity.

By mid-2020 — roughly a year after founding — the company had deployed approximately 50 MW of solar capacity, positioning it among Estonia's largest solar developers. In 2023 the company formally shifted its strategic focus from single-technology solar development toward integrated hybrid solutions designed to deliver energy during periods of peak market demand, leveraging the time-shifting capability of battery storage paired with intermittent solar and wind generation.

The business model is asset-development-driven: Sustainable Investments secures land via landowner partnerships, develops and presumably operates generation and storage assets, and monetizes output through wholesale grid sales and direct enterprise off-take arrangements. There is no disclosed software, platform-as-a-service, or recurring licensing revenue component; revenue mechanics are tied to physical energy production. The company's stated ambition is to deliver over 1,000 MW of combined production and storage capacity to the Estonian market within five years from 2023.

Name

Sustainable Investments

Legal name

Sustainable Investments OÜ

Website

https://sustainableinvestments.ee

Company type

Private

Founded year

2019

Operating status

Operating

Headcount range

1–10 employees

Short description

Sustainable Investments OÜ is an Estonian renewable energy developer, founded in 2019, that builds and operates hybrid solar, wind, and battery storage systems for the Estonian wholesale grid and industrial offtakers in partnership with landowners.

Ownership category

akta.pro rank

Product category

Renewable Energy Development

NAICS

Electric Power Generation (22111), Wind Electric Power Generation (221115), Solar Electric Power Generation (221114)

SIC

Cogeneration Services & Small Power Producers (4991)

akta.pro primary industry

Hybrid Wind Power Plants (Wind+Solar+Storage Co-located) (EUACAFAH)

akta.pro secondary industries

Renewable Energy Industrial Facilities Construction (Solar, Wind, Storage) (IMAFADAD), Microgrid Development, EPC & Integration (EUAMAJAB)

Keywords

• Renewable energy development
• Solar power projects
• Wind energy development
• Battery storage solutions
• Hybrid energy systems

Headquarters

HQ city

Tallinn

HQ country

Estonia

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Supply Chain, Technology or R&D

Revenue model

1. Renewable Energy Development and Production: The company develops renewable energy projects (solar, wind, battery storage) and generates revenue through energy production and sales to the grid or industrial offtakers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

Sustainable Investments OÜ develops renewable energy projects in Estonia, including solar power installations, wind power installations, and battery storage facilities. The company combines these technologies into integrated hybrid energy systems that deliver electricity to the market when demand is highest, partnering with landowners across Estonia and selling energy to the grid or to industrial offtakers.

Product overview

Sustainable Investments OÜ is a renewable energy development company offering a portfolio of energy solutions centered around solar, wind, and battery storage technologies. The company develops these as hybrid energy solutions, integrating solar, wind, and battery storage facilities into unified systems. As of mid-2020, the company had established itself as one of Estonia's largest solar energy developers with 50 MW capacity, and plans to bring over 1000 MW of combined production and storage capacity to the Estonian market within five years.

Differentiator

Problem solved

Functional benefit

Products and services

• Solar Energy Development Development of solar power installations in Estonia; by mid-2020 the company had become one of Estonia's largest solar energy developers with a total capacity of 50 MW.
• Wind Energy Development Development of wind power installations as part of the company's renewable energy portfolio in Estonia.
• Battery Storage Solutions Battery storage facilities integrated with renewable energy sources to enable energy supply when market demand is highest.
• Hybrid Energy Solutions Integrated renewable energy solutions combining solar, wind, and battery storage into a unified system that delivers energy to the market when demand is highest.

Quantifiable outcome

• 50 MW solar capacity developed by mid-2020, positioning company as one of Estonia's largest solar developers

Segments1 record

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Scale indicators5 records

Recent moves5 records

Expansion highlights4 records

Broad incumbents

• Utilitas: Estonian energy group with renewable generation, district heating, and waste-to-energy assets. Operates in the same Estonian market and is a potential partner, customer, or competitor for hybrid renewable projects.
• European Energy: Danish renewable energy developer with solar, wind, and storage projects across Europe. Comparable in product offering (hybrid solar+wind+storage) and developer business model, but at much larger scale and broader geographic footprint.
• Eesti Energia: Estonian state-owned national energy company with large-scale renewable development, including wind and solar. Potential offtaker, partner, or competitor depending on how Estonian policy shapes new renewable build-out.
• Statkraft: Norwegian state-owned hydropower-led renewable developer actively expanding into wind and solar across the Nordics and Baltics. Provides a relevant comparison point for Nordic-Baltic renewable developer economics.
• Enefit Green: Publicly listed Estonian renewable energy company with a diversified wind, solar, biomass, and hybrid portfolio across the Baltics. Competes with Sustainable Investments in Estonia for sites, PPAs, and grid capacity, but operates at materially larger scale and with broader technology exposure.
• RWE Renewables: Major European renewable developer with wind, solar, and battery storage assets, including in the Nordics and Baltics. Comparable technology mix (solar+wind+storage) but vastly larger scale and balance sheet.

Direct peers

• Evecon: Estonian renewable energy developer building wind and solar parks. Highly comparable business model focused on developing renewable projects in Estonia with similar GTM via landowner partnerships.
• Sunly: Estonian-Baltic solar and hybrid renewable developer with a similar focus on distributed and utility-scale projects. Direct overlap in target market (Estonia), customer base (landowners, offtakers), and product (solar + storage hybrid systems).

Regional players

• Ignitis Renewables: Lithuanian renewable energy developer and IPP with wind, solar, and battery storage across the Baltics. Operates in an adjacent Baltic market with the same hybrid renewable + storage product thesis and similar regulatory tailwinds.
• Alexela: Estonian energy company developing wind, solar, and biomethane projects with a similar domestic focus. Comparable in size and Estonian market orientation; overlaps on renewable development and offtake competition.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks5 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 Sustainable Investments