About Joulo

    The vision and mission One idea.

    Joulo was built by two entrepreneurs with years of experience in fintech, compliance and software • both Tesla drivers. With the new ERE regulation we combine that expertise into a platform that automatically rewards home chargers.

    Net per kWh€0.12–0.15guide price
    Service feeFrom 10%20% standard, lower via referrals
    PayoutQuarterly
    Retroactive from01-01-2026
    Supported brands68+
    Automated100%
    📱 Mobile appiOS & Android
    Share your ERE dataWidget
    Net per kWh€0.12–0.15guide price
    Service feeFrom 10%20% standard, lower via referrals
    PayoutQuarterly
    Retroactive from01-01-2026
    Supported brands68+
    Automated100%
    📱 Mobile appiOS & Android
    Share your ERE dataWidget

    Joulo by the numbers

    linked charge points
    5,450

    linked charge points

    supported brands
    68

    supported brands

    29 cloud • + OCPP gateway

    fastest to link
    Tesla

    fastest to link

    3s to link · median

    Joulo at a glance

    ERE registration for home chargers. Earn money for every kWh you charge at home. Joulo automatically registers your charging sessions as Emission Reduction Units (ERE) with the Dutch Emissions Authority (NEa), sells them on your behalf and pays out quarterly. 20% service fee by default • drops to 10% via referrals. Cancel yearly.

    Works with your existing charger • the most automatic integrations. Joulo connects directly with 15 charger brands via their own cloud API: Tesla, Easee, Wallbox, Zaptec, Smappee, V2C, Enphase, NexBlue, ChargeAmps, Ohme, Blue Current, go-e, Victron, Ecotap and Volt Time. Different brand? Our OCPP 1.6J gateway at ocpp.joulo.nl talks to virtually every modern charger • Alfen, ABB, KEBA, Schneider, Vestel and hundreds more. On top of that, Joulo syncs straight from the backends of charging platforms and energy companies, including Plugchoice. Joulo is the only ERE registration provider combining all three connection routes: cloud API, OCPP and platform backends. Everything runs fully automatically via cloud API or OCPP • you never enter meter readings by hand. A photo or manual entry is not a valid measurement source for registration and creates audit risk in the NEa verification; Joulo uses the full session data from the backend. Not MID-certified? We arrange an upgrade to a MID charger, or you request a Secondary Allocation Point (SAP) with your grid operator. The chargers we supply we source from Rexel, our procurement partner and one of the largest electrical wholesalers.

    Web, iOS and Android. Full dashboard on joulo.nl with real-time insight into sessions, ERE credits and payouts. Native apps for iPhone and Android with the same data • with over 8,500 downloads the most-used ERE registration app in the Netherlands. For business partners (energy companies, installers, CPOs, fleet operators) we offer white-label landing pages, REST APIs, widgets and a partner dashboard.

    // our story

    Fintech DNA, built for the energy market.

    Before Joulo existed, we built payment-gateway architecture, audit-compliance platforms and subscription systems at scale. That fintech experience is embedded in every part of Joulo: from automated NEa registration to the audit trail behind every charging session.

    As Tesla drivers with Full Self-Driving, we know how great electric driving is. When we discovered that home charging generates emission credits, we saw the opportunity to combine fintech and energy into one platform that automatically rewards EV drivers.

    // architecture

    Built as one system

    Four layers that think, decide and execute together • without manual work.

    🔗

    01 · Connections

    Joulo talks to 68 charger brands. Connecting often takes a single click.

    REST APIOAuth 2.0OCPP 1.6JMID verification
    🧠

    02 · Memory

    Every session, every kWh, every price • remembered and organised.

    Charging sessionsEAN registrationEnergy mixMarket prices
    ⚙️

    03 · Brain

    Automatically validate, calculate and pay out. No hassle.

    NEa complianceAnomaly detectionMarket timingAudit trailCapptions
    📱

    04 · Insight

    Your dashboard, app and exports • always up to date.

    Real-time dashboardiOS & AndroidWidgetCSV export

    ERE market

    How we sell the credits.

    A deliberate sales strategy, not speculation.

    Joulo aggregates credits from thousands of home chargers and sells them directly to obligated parties under the Dutch Energy for Transport regulation: fuel suppliers and energy companies that must cover their annual obligation (14.4% in 2026, rising to 28.4% in 2030). By aggregating volume we negotiate terms an individual driver would never get on their own.

    We pursue a deliberate strategy to consistently pay out a market-aligned price. The price itself remains subject to supply and demand • we always communicate the current guide price upfront and the actual realisation afterwards. No price guarantees, full traceability: every kWh, every certificate, every euro.

    // founders background

    Years of experience in fintech and compliance.

    Johan has worked in energy and tech for years • from Solarplaza to Philips. Ruben has been building software and platforms for years with his company Capptions. Together we combine that experience in Joulo.

    That background makes Joulo different: we understand how markets work, how to process data reliably and how to build a fair product that people trust.

    🏦

    Fintech & payments

    Payment gateway architecture, transaction processing

    Energy markets & commodities

    Emission rights, RED III regulation, NEa registered

    🛡️

    Regulatory compliance

    MID certification, GDPR, audit trail via Capptions

    🔌

    EV ecosystem & charging infra

    OCPP, charger APIs, smart charging protocols

    // the team

    The team behind Joulo

    Fintech, energy and the financial markets. The team behind every booked kWh.

    Ruben Stolk

    Ruben Stolk

    Founder • Managing Director

    Fintech Architecture & Compliance

    15+ years of experience in audit and compliance software. Founder of Capptions B.V. • a platform used by large enterprises to manage inspections, incidents and regulations. At Joulo he owns the fintech architecture, NEa registration and the audit trail behind every charging session. BSc Telematics (UT), MSc Computer Science & Economics (EUR).

    Compliance softwareFintechCapptions B.V.NEa registered
    Tesla Model Y
    Johan Trip

    Johan Trip

    Founder • Managing Director

    Payments & Energy

    Was at the start of Solarplaza.com and served as smart meter and EV specialist at KPN. Led REX, a demand-response startup within Alliander subsidiary Entrnce, and co-built energy company ServiceHouse • since sold to Coolblue. At Philips he scaled the subscription and payment platform to 505K subscribers and €40M ARR. Combines payments-at-scale expertise with deep energy market knowledge.

    PaymentsEnergyDemand responseSubscriptions at scale
    Tesla Model X
    Harm Oosthoek

    Harm Oosthoek

    Head of Trade

    Trading & Markets

    7+ years as a trader at Flow Traders • Europe's largest liquidity provider and market maker in ETFs and futures, active across equity, fixed income, FX and commodities. That's where he learned how price formation, liquidity and market structure really work. At Joulo he owns the trading strategy behind ERE sales: how and when your units are brought to market. MSc Financial Economics, Erasmus University Rotterdam.

    Flow TradersMarket makingCommodities & futuresMSc Financial Economics

    // our approach

    How we build

    Three principles in the architecture of everything we make.

    01Invisible

    The best infrastructure goes unnoticed

    Joulo works in the background • no manual work, no hassle. Registration, validation and payouts are fully automated.

    02Fair

    Every kWh is traceable

    Every euro is accountable. Transparency is architecture: full audit trail with source, timestamp and mutations per session.

    03Autonomy

    The system runs itself

    The system learns, validates and pays out. Without intervention, without delay. Built to scale without human bottlenecks.

    Joulo mobile app

    Use Joulo on mobile.

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    Help build the financial layer of the transition

    Are you an EV driver and want to start earning? Or interested in a partnership as an installer or consultant?