What ALVA Energie does

ALVA Energie GmbH is a Berlin-based energy-as-a-service company founded in January 2024 by cousins Cecil Croy (CEO), Alexis Cramm (Managing Director), and Franziskus Cramm (Head of Installation). The company delivers turnkey decentralized solar solutions for residential and commercial properties across Germany, bundling energy analysis, photovoltaic installation, battery storage, electricity procurement, and ongoing energy management into a single provider relationship. Its customer base targets three primary segments: the German housing industry (Wohnungswirtschaft), commercial property owners (Gewerbe), and institutional real estate portfolios of 10-250+ properties, with named clients including Covivio Immobilien, MyPlace SelfStorage, Kronwerk Wohnimmobilien, Stadtquartier Wohnen, Netto Marken-Discount, Strabag, and BBBank.

ALVA's core technical stack combines drone-based building analysis with AI processing to evaluate roof structures and economic potential before installation, supported by a proprietary ALVA Software platform that automates regulatory compliance (EEG, KWKG, StromSt, EnergieSt), billing, tenant electricity settlement, and portfolio management. The company offers three deployment models—Mieterstrom (tenant electricity), Gemeinschaftliche Gebäudeversorgung (GGV), and Onsite-PPA—and sells electricity to end-tenants under its Karlssonn consumer brand. A virtual summation meter concept (implemented November 2025) enables Mieterstrom 2.0 deployment without individual smart meter retrofits.

Revenue is generated through a mix of rooftop leasing/contracting (Dachpacht) where ALVA finances and operates systems, customer-financed plant leasing (Anlagenpacht), commercial project implementation fees, and recurring software/service fees integrated into energy management contracts. Pricing is quote-based and project-specific; no public pricing tiers are disclosed. The company raised approximately €5.2 million in a seed round in 2025 from Wolff & Müller Energy, ILB, avesco, Better Ventures, and Triodos Bank, with Triodos providing strategic refinancing specifically for decentralized energy concepts.

Name

ALVA Energie

Legal name

Alva Energie GmbH

Website

https://alva-energie.de

Company type

Private

Founded year

2024

Operating status

Operating

Headcount range

11–50 employees

Short description

ALVA Energie is a Berlin-based energy-as-a-service company founded in 2024 that delivers turnkey decentralized solar, storage, and energy management solutions for German residential and commercial property owners, bundling financing, installation, regulatory compliance, and ongoing operations under a single contracting relationship.

Ownership category

akta.pro rank

Product category

Decentralized Solar Energy Services

NAICS

Solar Electric Power Generation (221114), Electric Power Generation, Transmission and Distribution (2211)

SIC

Electric, Gas & Sanitary Services (4900)

akta.pro primary industry

Solar EPC & Construction (Utility-Scale, Rooftop, Balance of System) (EUAMABAB)

akta.pro secondary industries

Solar Roofing & Roof-Mounted PV Systems (IMADAFAO), Solar PV Power Plant EPC (Utility-Scale) (EUAEAAAG), Commissioning, Testing & Energization Services (Pre-Commissioning, Grid Code Compliance) (EUAMAFAK)

Keywords

• Solar energy services
• Tenant electricity solutions
• Photovoltaic installation
• Building energy management
• Rooftop leasing contracts

Headquarters

HQ city

Berlin

HQ country

Germany

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Rooftop Leasing / Contracting (Dachpacht): ALVA finances, installs, and operates PV systems on customer rooftops. Property owners receive stable rental income without capital investment or operational responsibility. ALVA generates revenue by selling electricity to tenants and building users at regulated tariffs, and by managing the entire energy supply chain.
2. Plant Pacht (Customer-Financed PV): Customers invest in PV systems and lease them to ALVA or operate them with ALVA as service provider. Customers receive higher long-term returns with their own capital deployed. ALVA handles operations, billing, and stakeholder management in exchange for service fees.
3. Commercial Energy Solutions: ALVA provides complete energy solutions for commercial properties including PV, storage, and energy management, generating commercial cost savings of up to 50%. Revenue comes from project implementation fees and ongoing service contracts.
4. Software Licensing / SaaS: ALVA's proprietary software platform handles energy regulatory compliance, billing, and portfolio management. Revenue is generated through software service fees integrated into the overall energy management offering.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels7 records

Core offering

ALVA Energie plans, finances, installs, and operates turnkey solar PV systems on residential and commercial building rooftops in Germany, supplying the generated power directly to tenants (Mieterstrom) or commercial users (Onsite-PPA) via flexible contracting models such as Dachpacht and Anlagenpacht. The offering integrates drone+AI building analysis, battery storage, strategic electricity procurement, and ongoing AI-driven energy management, supported by a proprietary software platform for regulatory compliance and the Karlssonn tenant electricity brand.

Product overview

ALVA Energie operates as a one-stop-shop energy upgrade provider for properties across Germany, offering an integrated business model combining decentralized solar energy solutions with comprehensive energy management services. The core offering consists of three interconnected service pillars: (1) tenant electricity models including the Mieterstrom product, the newer Gemeinschaftliche Gebäudeversorgung (GGV) model, and the Onsite-PPA offering for commercial properties; (2) the proprietary ALVA Software platform that automates regulatory reporting for EEG, KWKG, and energy taxes; and (3) the consumer-facing electricity brand Karlssonn. Beyond these, ALVA delivers five integrated service modules spanning energy and building analysis using drone and AI technology, photovoltaic installation with planning/financing/operation, battery storage solutions, strategic electricity procurement, and ongoing energy management with real-time monitoring. All services are delivered through flexible contracting models including roof leasing (Dachpacht) where ALVA finances and operates systems without customer capital investment, and system leasing (Anlagenpacht) for customers investing their own capital.

Differentiator

Problem solved

Functional benefit

Brands

• Karlssonn: Electricity brand offering tenant electricity - Dein Strom vom Dach (Your electricity from the rooftop). Karlsonn delivers locally produced solar power directly to tenants in residential buildings.

Products and services

• Mieterstrom (Tenant Electricity) ALVA operates PV systems on residential building rooftops and supplies the generated solar power directly to tenants without feeding into the public grid, offering tenants cheaper electricity and providing property owners with stable revenue streams.
• Onsite-PPA Power Purchase Agreement model for commercial properties where ALVA finances, installs, and operates solar installations, supplying locally generated electricity to businesses at agreed rates.
• Gemeinschaftliche Gebäudeversorgung (GGV) Community building supply model enabled by EEG 2023 reform, distributing PV power directly to residential units through existing meter frames without separate tenant electricity registration, simplifying implementation for smaller properties.
• Karlssonn ALVA's consumer-facing electricity brand for tenant electricity customers, offering locally generated solar power directly from the building roof to residential tenants under the tagline 'Dein Strom vom Dach' (Your electricity from the roof).
• ALVA Software Comprehensive software solution automating all bureaucratic requirements for PV system operation, including automatic completion of EEG, KWKG, StromSt, and EnergieSt forms, deadline management, and multi-site energy reporting for portfolio management.
• Energie- & Gebäudeanalyse (Energy & Building Analysis) Comprehensive building structure and technical systems analysis using drone technology and AI, identifying savings potential, evaluating economic measures, and creating reliable investment decision foundations including promotion recommendations.
• Photovoltaik (Photovoltaics) Full-service PV solutions covering planning, financing, installation, and operation of solar systems, including grid connections and integration with existing systems, delivered through structured tenant electricity models up to streamlined onsite-PPA solutions.
• Speicherlösungen (Storage Solutions) Intelligent battery storage integration forming decentralized energy concepts for properties, optimizing on-site solar consumption, increasing supply security, reducing peak loads, and achieving up to 50% commercial cost savings.
• Strombeschaffung (Electricity Procurement) Strategic energy purchasing service for portfolio-wide cost optimization, using forward-looking procurement strategies to leverage market opportunities and price developments, combinable with or without decentralized energy concepts.
• Energiemanagement (Energy Management) Integrated energy flow networking system providing full transparency and active control capabilities, using data-driven analysis to identify optimization potential and achieve measurable savings across entire portfolios.
• Dachpacht (Roof Leasing) Contracting model where ALVA finances, plans, and operates solar installations on customer rooftops; property owners receive monthly lease payments without capital investment or technical risk.
• Anlagenpacht (System Lease) Investment model where customers finance solar installations and lease them to electricity users, offering higher long-term returns with own capital, tax depreciation benefits, while ALVA handles operations and billing.
• Virtual Summation Meter (Virtueller Summenzähler / Mieterstrom 2.0) Smart metering concept enabling Mieterstrom 2.0 implementation in buildings, allowing landlord-to-tenant electricity supply without individual smart meter installations, delivered as part of ALVA's tenant electricity service.

Quantifiable outcome

• Average 20% return on investment for property owners
• +5 more outcomes

Named customers10 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability6 records

Feature4 records

Partnerships

Two partnerships are on record, tiered regional.

• SolarCity BerlinregionalStrategic or Co-development Partner · 1 November 2025Official Solarcity partner of the State of Berlin, enabling preferential market access and collaboration with Berlin's solar initiatives and municipal property portfolio.
• Stadtwerke RostockregionalStrategic or Co-development PartnerMunicipal utility partner, enabling collaboration on regional energy projects and grid integration.

Scale indicators13 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Enpal: Berlin-based solar leasing company offering financed PV systems, storage, heat pumps, and EV chargers to German homeowners. Direct competitor with same Dachpacht/contracting model, target market, and one-stop-shop positioning.
• 1Komma5° (1point5 degrees): Hamburg-based one-stop-shop for decentralized energy (PV, heat pumps, EV charging, electricity) targeting residential and commercial customers. Closest direct peer in product breadth, software-led approach, and energy-as-a-service GTM in Germany.
• Solarwatt: Dresden-based solar manufacturer and full-service provider offering PV, storage, and energy management to residential and commercial customers in Germany. Comparable integrated offering but more vertically integrated into panel manufacturing.
• Lichtblick: Hamburg-based renewable energy utility offering decentralized energy, storage, EV charging, and tenant electricity models (ZuhauseStrom) to German property owners. Most comparable to ALVA on Mieterstrom and integrated energy management.
• Zolar: Berlin-based solar marketplace and installer network offering financed PV systems to German homeowners. Comparable customer base (residential property owners) and software-led lead generation, but less vertically integrated than ALVA.

Broad incumbents

• E.ON Energie Deutschland: Major German utility offering PV rooftop solutions, tenant electricity, and energy services to residential and commercial customers. Comparable offerings as part of a much broader portfolio; competing in Mieterstrom and commercial energy contracts.
• sonnen (Shell subsidiary): German battery storage specialist and ALVA integration partner offering home and commercial storage plus virtual power plant services. Overlaps with ALVA on storage and energy management layer but is hardware-led rather than full PV installer.
• EnBW Energie Baden-Württemberg: One of Germany's largest utilities, offering rooftop solar, tenant electricity (Mieterstrom), heat pumps, and EV charging to residential and commercial customers. Overlaps broadly with ALVA but operates at much larger scale and across multiple energy segments.

Regional players

• Sunrun: Largest US residential solar leasing company, operating a comparable Dachpacht/PPaL model with integrated storage and grid services. Conceptually analogous business model in a different regulatory and geographic market.

Emerging players

• Next Kraftwerke: Cologne-based virtual power plant operator aggregating distributed energy assets including PV, storage, and CHP. Comparable in operating distributed solar assets and energy management software, but upstream of tenant electricity retail.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/101545436

Revenue estimate

Valuation estimate

Number of profiles

Profiles14 records

Funding overview

Funding rounds1 record

Investors4 records

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 ALVA Energie