Alternus Energy

What Alternus Energy does

Alternus Clean Energy is a publicly traded renewable energy company focused on developing, acquiring, and operating utility-scale solar parks across Europe and North America. Founded in 2000 and headquartered at 17 State Street, New York, with its primary legal entity Alternus Energy Group Plc domiciled in Ireland, the company operates a portfolio of solar photovoltaic projects sold under long-term power purchase agreements (PPAs) typically exceeding 12 years. Its offering centers on three market solutions: utility-scale solar (the core asset class and primary revenue generator), microgrids (delivered through a joint venture with Hover Energy targeting data center and corporate customers), and complementary battery storage technology. Revenue is generated via subscription-style long-term PPAs with utilities, government/institutional off-takers, and increasingly corporate and data center buyers; the company does not publicly disclose pricing and negotiates contract terms on a project-by-project basis.

The business model is asset-heavy and acquisition-driven. Alternus scales its operating capacity by purchasing operational renewable energy portfolios rather than solely developing greenfield projects — exemplified by the announced $60 million acquisition of 33 operational solar projects totaling over 80 MWp across eight U.S. states, which is expected to nearly triple U.S. operational capacity to over 120 MWp and contribute approximately $6.7 million in annual revenue. The company's 2021 acquisition of a 60% stake in Dutch developer Unisun Energy added 250 MW of PV projects and enabled vertical integration into European solar development, while the December 2024 acquisition of Liion and the August 2025 Hover Energy joint venture extended the platform into microgrids and battery storage. Capital is raised through a combination of small private placements (notably a $2.16 million convertible note round in April 2024 and a ~$2.25 million round in January 2025), public equity via its Nasdaq listing under ticker ALCE (and OTC pink: ALTN), and acquisition financing, targeting 3 GW of operating projects within five years.

Name

Alternus Energy

Legal name

Alternus Clean Energy, Inc.

Website

https://alternusenergy.com

Company type

Public

Founded year

2000

Operating status

Operating

Headcount range

11–50 employees

Short description

Alternus Clean Energy is a publicly traded renewable energy company that develops, acquires, and operates utility-scale solar parks under long-term PPAs across Europe and North America, serving utilities, government, corporate, and data center customers.

Ownership category

akta.pro rank

Product category

Solar Power Generation

NAICS

Solar Electric Power Generation (221114)

SIC

Electric Services (4911)

akta.pro primary industry

Solar Financing, Leasing & Ownership Platforms (Tax Equity, PPA, Securitization) (EUAMABAJ)

akta.pro secondary industries

PPA Origination, Structuring & Offtake Contracting (Physical/Financial, Sleeves) (EUAMAMAD), Corporate PPAs (C&I Offtake; Sleeved/Virtual/Physical) (EUAGADAA)

Keywords

• Utility-scale solar
• Solar power generation
• Microgrid solutions
• Battery storage systems
• Renewable energy developer

Headquarters

HQ city

New York

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Solar Energy Generation & Sale via PPAs: Revenue is generated through the operation of solar energy projects under long-term Power Purchase Agreements (PPAs) with counterparties. The company sells electricity generated by its operational solar parks to utilities, corporations, and government entities under fixed-price contracts typically lasting 12+ years.

Go-to-market motion3 records

Distribution channels2 records

Marketing channels3 records

Core offering

Alternus Clean Energy develops, owns, and operates utility-scale solar parks across Europe and North America, selling the generated electricity to utilities, corporations, and government entities under long-term Power Purchase Agreements (PPAs) typically lasting 12+ years. The company complements its core solar operations with microgrid solutions (delivered through a joint venture with Hover Energy targeting data centers) and battery storage capabilities to deliver 24/7 clean energy to enterprise customers.

Product overview

Alternus Clean Energy operates as a renewable energy company offering a portfolio of utility-scale solar parks, microgrids, and battery storage solutions. The company follows a platform-plus-complementary-technologies architecture, with Utility Scale serving as the core offering for developing large-scale solar installations. The Microgrids product, delivered through a joint venture with Hover Energy, extends the company's reach into distributed energy solutions for data centers and corporate customers. Battery Storage complements both offerings by providing grid reliability and energy management capabilities. Together, these products enable the company to deliver comprehensive clean energy solutions across Europe and North America.

Differentiator

Problem solved

Functional benefit

Products and services

• Utility Scale

Quantifiable outcome

• Nearly triple U.S. operational capacity to more than 120 MWp upon closing of the 80+ MW portfolio acquisition.
• +3 more outcomes

Named customers1 record

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Two partnerships are on record, tiered core.

• Hover EnergycoreStrategic or Co-development Partner · 1 January 2025Alternus Clean Energy formed a joint venture with Hover Energy specifically targeting data centers and corporate customers for next-generation microgrid solutions. This partnership represents a core strategic initiative to expand into the high-growth data center energy market and deliver integrated microgrid offerings combining Alternus's project development capabilities with Hover Energy's microgrid technology.
• Unisun Energy Holding B.V.coreStrategic or Co-development Partner · 7 June 2021Alternus Energy Group acquired a 60% stake in Dutch solar developer Unisun Energy, adding 250 MW of PV projects to its portfolio. The deal included cash and shares, enabling Alternus to develop its own solar parks in Europe and reduce costs through vertical integration. The acquisition was valued at EUR 800,000.

Scale indicators13 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Clearway Energy: US-listed yieldco (CWEN) that owns and operates utility-scale solar and wind generation, contracting output via long-term PPAs. Directly comparable in business model — contract-based renewable generation with diversified counterparties — though at much larger scale.
• Atlantica Sustainable Infrastructure: Yieldco-style owner/operator of renewable energy and sustainable infrastructure assets selling power under long-dated contracts. Comparable as a small/mid-cap public IPP with a contracted-cash-flow model and North American + European footprint.
• Hannon Armstrong Sustainable Infrastructure Capital: Public company that finances and owns climate-solution infrastructure including utility-scale solar and energy storage. Highly comparable as a capital-markets-facing platform funding the build-out of renewable assets and PPAs.
• Innergex Renewable Energy: Canadian-listed developer, owner and operator of renewable energy facilities (solar, wind, hydro, storage) selling under long-term PPAs in the Americas and Europe. Closely comparable mid-cap IPP with similar geographic mix and contracted-revenue model.
• Boralex: Canadian-listed independent power producer operating utility-scale solar, wind, hydro and storage assets across North America and Europe, primarily under long-term PPAs. Comparable mid-cap IPP with a similar growth-by-acquisition history.
• Northland Power: Canadian-listed independent power producer with a portfolio of renewable and conventional generation assets contracted under long-term PPAs across North America and Europe. Comparable as a mid-cap public IPP pursuing contracted asset growth.

Broad incumbents

• Brookfield Renewable Partners: One of the world's largest publicly listed renewable IPPs, owning and developing utility-scale solar, wind and hydro across the Americas and Europe with long-term PPAs. Comparable as a long-duration IPP, but at materially larger scale and broader technology mix.
• NextEra Energy Resources: Largest US renewable energy developer/IPP and the global benchmark for utility-scale solar and wind growth strategy. Directly comparable business model (develop-own-sell-via-PPA), but vastly larger scale, balance sheet and development pipeline.
• EDF Renewables: Subsidiary of EDF developing, owning and operating utility-scale solar, wind and storage projects globally. Directly comparable in the solar-PPA business model, but with a much larger pipeline, balance sheet and corporate parent.

Emerging players

• SunPower Corporation: US-listed residential and small-commercial solar plus storage provider. Less directly comparable on scale and customer type, but operates in the same US solar IPP-adjacent ecosystem with overlapping PPA structuring expertise.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights5 records

Customer concentration

• LinkedInlinkedin.com/company/alternuscleanenergy
• Xx.com/AlternusEnergy

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries2 records

Funding overview

Funding rounds3 records

Investors

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

M&A2 records

Investments

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

Frequently asked questions about Alternus Energy