stichting garantiefonds zonzeker

What stichting garantiefonds zonzeker does

Stichting Garantiefonds ZonZeker (SGZZ) is a Dutch non-profit foundation (stichting) established in March 2016 by five independent solar installers in Spijkenisse, Netherlands, to provide guarantees on solar panel installations. The foundation operates a quality assurance framework consisting of a curated product whitelist compiled from collective installer experience, standardized installation documentation and reporting templates, and an installer screening and on-site audit system. Installers must meet qualification criteria (minimum six months active, 25 prior installations, BDA certifications, valid insurance, and bookkeeping reviews) to participate, and are subsequently subject to periodic field audits of recent installations.

SGZZ serves two customer segments. Property owners (residential and commercial) receive a tiered ZonZeker guarantee certificate upon installation registration — Budget (standard, included at no extra cost and valid until handover), Basis (up to 10 years during the factory warranty period, including coverage in the event of installer bankruptcy), and Extra (up to 15 years regardless of factory warranty, with additional services such as inverter checks and performance measurement). Independent installers, the B2B counterpart, gain access to the guarantee framework, shared marketing materials, professional documentation, and exclusive partner discounts (Solar Monkey software at 15% off, BDA training, RSS roof safety equipment, Solar Techniek Nederland courses).

The foundation earns revenue through recurring installer membership/subscription fees and certificate fees on the paid Basis and Extra tiers; pricing is not publicly disclosed and is described as low-cost with a flexible three-month installment plan for sole proprietors. Distribution occurs via an affiliated independent installer network, a website-based installer locator, and a partnership with WoonWijzerWinkel, the official energy advisor for 24 municipalities in Rijnmond and Haaglanden. Headcount is reported at 11–50 employees and no funding rounds, acquisitions, or parent entity involvement are disclosed.

Name

stichting garantiefonds zonzeker

Legal name

Stichting Garantiefonds ZonZeker

Website

https://zonzekerzonderzorgen.nl

Company type

Private

Founded year

2016

Operating status

Operating

Headcount range

11–50 employees

Short description

Stichting Garantiefonds ZonZeker is a Dutch non-profit foundation, founded March 2016, that operates a solar guarantee fund screening independent installers and offering tiered warranty certificates (Budget, Basis up to 10 years, Extra up to 15 years) to property owners across the Netherlands.

Ownership category

akta.pro rank

Product category

Solar Energy Guarantee Services

NAICS

Religious, Grantmaking, Civic, Professional, and Similar Organizations (813)

akta.pro primary industry

Standards, Certification & Compliance (RECs/GOs, sustainability reporting) (EUAMANAJ)

akta.pro secondary industry

Solar Workforce, Training & Safety Services (Installer Training, Certification, EHS) (EUAMABAO)

Keywords

• Solar panel warranties
• PV installation guarantees
• Installer certification programs
• Solar energy assurance
• Renewable energy protection

Headquarters

HQ city

Spijkenisse

HQ country

Netherlands

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Others

Revenue model

1. Installer Membership / Subscription Fees: Independent solar installers pay recurring subscription fees to belong to the collective and access the guarantee framework, marketing materials, professional documentation, and exclusive partner discounts. The foundation describes subscription costs as low, with a flexible entry payment plan allowing sole proprietors to pay the joining fee in installments over 3 months.
2. Certificate Fees (Budget, Basis, Extra): Property owners pay for ZonZeker guarantee certificates upon installation. The standard Budget coverage is included at no extra cost upon installation registration. Extended Basis (up to 10 years) and Extra (up to 15 years) certificates provide additional coverage for a fee, beyond the standard factory warranty period.

Pricing tiers

Go-to-market motion3 records

Distribution channels3 records

Marketing channels9 records

Core offering

Stichting Garantiefonds ZonZeker is a Dutch non-profit foundation that operates a solar panel guarantee fund. It screens independent solar installers against qualification criteria and issues tiered guarantee certificates (Budget, Basis, Extra) to property owners covering solar PV installations against installer bankruptcy, product defects, and performance issues for up to 15 years. Property owners discover certified installers through the foundation's website and are automatically enrolled in the guarantee program at point of installation.

Product overview

Stichting Garantiefonds ZonZeker is a non-profit foundation that acts as a guarantee fund for solar panels, connecting certified installers with property owners. The organization offers a tiered certification system consisting of three coverage levels: ZonZeker Budget (standard coverage until installation delivery), ZonZeker Basis (extended coverage up to 10 years during factory warranty), and ZonZeker Extra (maximum coverage up to 15 years including additional services). Installations are registered through affiliated installers who use pre-approved quality products from a maintained whitelist. The foundation was established in March 2016 and has grown to include numerous independent installers across the Netherlands, providing homeowners and businesses with financial security, professional installation, and recourse in case of installer bankruptcy.

Differentiator

Problem solved

Functional benefit

Products and services

• ZonZeker Budget

Quantifiable outcome

• 15 years of guaranteed operational coverage regardless of individual component factory warranty periods
• +4 more outcomes

Named customers12 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

Feature3 records

Partnerships

Five partnerships are on record, tiered core and minor.

• WoonWijzerWinkelcoreGTM or Marketing Partner · 15 November 2016WoonWijzerWinkel is the official energy advisor (Energieloket) for 24 municipalities in the Rijnmond and Haaglanden regions. The partnership involves joint collective purchasing campaigns, organizing information evenings with expert installers, and displaying solar products in a showroom. WoonWijzerWinkel recommends SGZZ-certified installers to residents, extending SGZZ's reach into the local community.
• Solar MonkeycoreTechnology or IntegrationSolar Monkey is the market leader in solar panel software, enabling system design, sales, and maintenance. Through intensive cooperation with SGZZ, ZonZeker installers receive an exceptional 15% discount on Solar Monkey software. The partnership also includes plans to integrate software to minimize duplicate administration for installers.
• BDA Dak- en GevelopleidingencoreImplementation/ SI/ Consulting PartnerBDA provides vocational training for solar installers, including 'Dakmontage van zonne-energiesystemen' and 'Installeren van zonne-energiesystemen' certifications. BDA makes its solar energy course program available to ZonZeker installers at a significant discount. BDA training exceeds the requirements set by SGZZ for member qualification.
• RSS Roof Safety SystemsminorImplementation/ SI/ Consulting PartnerRSS helps independent installers create safe workplaces by providing roof safety equipment. ZonZeker installers benefit from a substantial discount on RSS roof safety products.
• Solar Techniek NederlandminorImplementation/ SI/ Consulting PartnerSolar Techniek Nederland is a training provider for (starting) PV installers, recognized by InstallQ and focused on quality and professionalism. Installers affiliated with SGZZ receive a discount on Solar Techniek Nederland courses.

Scale indicators4 records

Recent moves9 records

Expansion highlights5 records

Broad incumbents

• Techniek Nederland: Largest Dutch trade association for installation and technical services companies (formerly Uneto-VNI), representing thousands of installers. Comparable as the broader institutional umbrella for Dutch installers that SGZZ-affiliated installers often belong to, with overlapping installer-network and quality frameworks.
• TÜV Rheinland: Global testing, inspection, and certification organization with solar product and installer certification services. Comparable because it provides independent quality assurance and product whitelist functions that overlap with SGZZ's vetting role, but operates across many industries at global scale.
• SolarPower Europe: European solar industry association representing the full PV value chain. Comparable as an industry-level collective advocacy and standards body relevant to SGZZ's quality assurance mission, but operating at EU policy level rather than installer-by-installer consumer protection.

Direct peers

• Holland Solar: Trade association representing Dutch solar energy companies. Comparable to SGZZ because both act as collective voice and quality reference points within the Dutch solar installation ecosystem, though Holland Solar focuses on industry advocacy and lobbying rather than consumer guarantee funds.
• NABCEP (North American Board of Certified Energy Practitioners): US-based certification body for solar PV installers, providing professional credentials and continuing education. Comparable because it addresses the same trust/quality gap between consumers and independent installers that SGZZ targets, though via individual practitioner certification rather than installer-collective guarantees.
• Zoncoalitie: Dutch coalition focused on accelerating solar adoption in the Netherlands, working with municipalities, businesses, and citizens. Comparable because both serve as Dutch intermediaries building public confidence in residential/commercial solar adoption, though Zoncoalitie emphasizes market activation over warranty guarantees.

Emerging players

• Solar Monkey: Dutch market-leading software platform for solar PV system design, sales, and monitoring. Comparable as a Dutch solar software ecosystem partner offering SGZZ installers preferential pricing, and addressing adjacent installer operational needs within the same Dutch solar value chain.

Regional players

• WoonWijzerWinkel: Official Energieloket (energy advice point) for 24 municipalities in Rijnmond and Haaglanden, running solar information evenings and collective purchasing. Comparable as a Dutch regional distribution partner for SGZZ-certified installers, channeling residential demand into the SGZZ-affiliated installer network.

Others

• Consumentenbond: Dutch consumer association that independently tests products and publishes quality rankings, and is referenced as an SGZZ-recognizer. Comparable as a Dutch consumer-trust institution that property owners consult before solar purchases, operating in an adjacent trust/verification role.
• BDA Dak- en Gevelopleidingen: Dutch vocational training provider for solar PV installers (Dakmontage and Installeren van zonne-energiesystemen certifications). Comparable as an adjacent workforce-qualification partner whose training exceeds SGZZ's member requirements, feeding into the same installer quality framework.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/stichting-garantiefonds-zonzeker

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 stichting garantiefonds zonzeker