Platform
From charging session to income.
On track for 48 million MID kWh in 2026. Zero paperwork, everything automated.
- MID kWh in 2026
- 48.4m
- MID kWh in 2026
- forecast
- EREs in 2026
- 16.1m
- EREs in 2026
- forecast
- customers
- 26,500+
- customers
The standard among Dutch ERE registration providers • the only one combining all three connection routes: cloud API, OCPP and platform integrations.
In numbers
What runs on the platform right now.
We are the only one combining all three connection routes: 15 direct cloud APIs, universal OCPP 1.6J through our own gateway, and the backends of charging platforms and CPOs. We read grid connection data through our ODA link with the central connection register (CAR). Identity is confirmed with iDIN.
Loaded live from our stack: growth, infrastructure and connection quality.
Key metrics
- MID kWh charged in 2026
- 31,755,971
- Live • forecast for all of 2026: 48,439,796
- EREs in 2026
- 10,565,021
- From those kWh • forecast for all of 2026: 16,115,629
Support & linking
- Average first response (7d, Mon–Fri 09:00–17:00 NL)
- 28min
- Target ≤ 4 h • met
- Resolved conversations (7d)
- 750
Fastest to link (median)
OAuth to first charge point via cloud API • top 3 brands.
- 1Volt Time3 s
- 2BlueBird Power3 s
- 3SolarEdge3 s
Fewest sync errors
Share of active links without sync errors • top 3 providers (min. volume).
- 1Tesla0%
- 2Solaredge0%
- 3Bluebird0%
Infrastructure
Infrastructure share
- Platform / CPO7%
- Cloud integrations73%
- OCPP17%
- Upload2%
- Manual0%
Overview
Cloud API
Zaptec55%
Easee19%
Tesla9%
Volt Time4%
Wallbox3%
Enphase3%
SolarEdge3%Blue Current2%
NexBlue1%
ChargeAmps<1%
Smappee<1%
Ohme<1%OCPP
Peblar37%
Alfen17%
Ratio10%
Webasto4%Stegen Electronics2%
Raedian1%Loxone1%
Mennekes1%Zaptec1%
EVBox<1%
Myenergi<1%
Autel<1%Other22%2%
Upload (automatic)
0%
Manual
Charger brands
81 brandsZaptec31%Easee10%Alfen10%Peblar7%
Shell Recharge6%Tesla5%Volt Time2%Ratio2%Wallbox2%Enphase2%EVBox2%SolarEdge1%Other5%These statistics reflect direct Joulo users only. Whitelabel and CPO client data is not shown. Learn about our whitelabel solution →
The app
kWh and ERE credits • sessions and MID status per charge point • quarterly payout • signing up, connecting and registering.
- App Store
- 4.8
- Google Play
- 4.6
- Installs
- 32,500
524 ratings
167 ratings
iPhone and Android combined
API and white-label
- 850
- Customer API tokens
- 14
- Partners on the API
- 7
- White-label tenants
- 2
- Registration providers
Own scripts and Home Assistant
Register customers from their own system
CPOs and energy companies on our infrastructure
Run their own registration service on Joulo
Ecosystem
Brands, partners and coverage.
- 33
- Integrations
- 280
- Partners
- 800
- Quote requests
Cloud APIs, platforms and CPOs
Installers and energy partners
Quote requests and orders for a charge point, rounded
ZaptecEaseePeblarAlfenTeslaShell RechargeBLBlueBird PowerRatioWallboxEnphaseSolarEdgeVolt TimeActive in 340 of 342 Dutch municipalities
All 12 provinces • view coverage per municipality
- 11 min
- from sign-up to connected
- 77%
- connect a charger
- 97%
- fully automatic
- 57 min
- to a support answer
- ISO 27001
- certified
Median, for those who connect
Of everyone who signs up
Through a cloud API or OCPP
Median, day and night
September 26, 2026
The market in numbers
The Netherlands next to the home charger.
CBS measures the country, we measure our customers. Shares only, never counts. Put them side by side and you see who charges at home.
The Netherlands, according to CBS
- of new cars fully electric, September 2026
- 53%
- of new cars fully electric, September 2026
- of model year 2025 has an electric motor
- 86%
- of model year 2025 has an electric motor
- driven per year by an electric car, 2024
- 18,131 km
- driven per year by an electric car, 2024
- of all car kilometres are driven by a plug-in car, 2024
- 14%
- of all car kilometres are driven by a plug-in car, 2024
Our customers, next to the Netherlands
- Solar panels
- 92%of our customers
- 37% Dutch homes
- Dynamic energy contract
- 65%of our customers
- 8.8% Dutch households
- Heat pump
- 41%of our customers
- 10% Dutch homes
- Charges mostly at home
- 94%of our customers
- 65% what the market assumes
National figures from CBS StatLine and the ACM, live. Joulo shares from the household profile of private customers who answered the question, measured 7 October 2026. Home charging measured 7 October 2026.
Architecture
Four layers, one system.
Capabilities, memory, intelligence and interfaces • four abstraction layers that form invisible infrastructure.
- 01
Connections
Joulo talks to your charger • any brand, any protocol.
- 02
Memory
Every session, every kWh, every price • remembered and organised.
- 03
Brain
Automatically validate, calculate and pay out.
- 04
Insight
Your dashboard, app and exports • always up to date.
What you get
Everything in one platform.
From real-time insights to automatic registration • everything you need to earn from your charger.
Automatic registration
We fetch your charging data, validate it and register it with the NEa.
Dashboard and app
kWh, EREs and expected earnings, live. iOS and Android.
Checks and identity
Validation, fraud detection and iDIN identification at registration.
Take your data
CSV export and a widget for your own site, via iframe, SVG or JSON.
GDPR and ISO 27001
Your data is yours. ISO 27001:2022 certified since September 2026.
API-first
API first, screens second.
Every feature is an API before it is a screen. The dashboard, the app and the partner portals run on those same APIs. The documentation is public • you don't need a sales call to start building.
Open developer docs
Full documentation with OpenAPI specification at developer.joulo.nl. Public for everyone.
Personal API tokens
Pull your own charging sessions and ERE data into your own tools • with a token from your dashboard.
Partner API
Partners onboard customers and track ERE positions straight from their own system, with OAuth2 access.
OCPP gateway
Our own OCPP 1.6J gateway. Any charger that speaks OCPP connects directly to the platform.
How we build
Built by our own team.
Our own integrations, our own OCPP gateway and our own app. These figures come straight from our code.
- lines of code
- 1,293,847
- lines of code
- code growth, week on week
- +8.0%
- code growth, week on week
- deploys, last 7 days
- 320
- deploys, last 7 days
Shipping cadence
Last successful deploy
11 Oct 2026, 19:13
v2.0.13291
Commits (12 weeks)
Releases (12 weeks)
Partners
Built for collaboration.
Installers, energy suppliers and consultancies collaborate on the platform. Everyone earns.
Energy partners
Co-branded landing page under your own brand (e.g. Tibber). Service fee discount for all your customers.
More about the partner programConsultancies and installers
Integrate ERE advice into your services. Refer and co-earn.
For installersCPOs and back-offices
Available as whitelabel. Integrate Joulo into your own platform and offer ERE registration to your customers.
Whitelabel for CPOsInfrastructure
One platform beneath the Dutch charging market
Cloud integrations with the major charger brands, our own OCPP gateway and our own account with the NEa. CPOs and other registration providers run their service on the same infrastructure.
- 250+ charger models · 67 brands
- Own OCPP 1.6J gateway
- 8.5 million ERE sold
ERE market
What an ERE is worth this week.
ERE market price
Costs
Your service fee can go down.
Joulo charges individuals a 20% service fee, cancellable yearly. Referral discounts available.
Invite other home chargers and you both get an extra 1 percentage point discount as long as you both remain customers • down to a minimum of 10%.
Sign up through a connected partner, such as an energy supplier or installer, and an extra discount may apply on top.
service fee, cancellable yearly
- Standard service fee
- 20%
- Loyalty discount
- −1% per renewal year
- Referral discount
- −1% per active friend
- Partner discount
- extra discount possible
- With enough active referrals
- 10%
Referral discount in 3 steps
- 1Share your link
- 2Friend registers and connects charger
- 3Both get −1% discount
Discount applies as long as you both remain Joulo customers.
What customers say
“Clean layout, easy to reach and good support. A solid platform I have full confidence in.”
Questions
Frequently asked questions.
What are ERE credits?
ERE stands for Emissiereductie-eenheid (Emission Reduction Unit). Each MWh of renewable energy your charger consumes generates ERE credits. These are traded on the market and you receive the proceeds.
Which chargers are supported?
Joulo supports 90+ brands and 290+ models via 15 direct cloud integrations, platform backends and the universal OCPP 1.6J protocol • the only ERE registration provider combining all three connection routes. From Tesla to Alfen, from Easee to Wallbox.
What does Joulo cost?
Joulo charges a standard 20% service fee incl. VAT on your ERE revenue. Signing up is free • you only pay when you earn.
How is my payout calculated?
Each quarter your registered ERE credits are traded. After deducting the service fee, the net amount is deposited to your IBAN.
Do I need to install hardware?
No. Joulo works entirely via the cloud. We connect to your existing charger • no additional hardware needed.
Where does my money sit until payout?
Until the quarterly payout, your ERE proceeds sit in a separate account at Rabobank that we keep apart from our working capital and do not use for our own operations.
How safe is my data?
Encrypted in transit (TLS) and at rest. Access is fenced off per user at the database level (Row Level Security). IBANs are stored encrypted in Supabase Vault, OCPP connections run over wss:// with hashed credentials. Our information security has been ISO 27001:2022 certified since September 2026 (audited by CertPro) and the infrastructure runs on Supabase and Cloudflare.
How long do you keep my data?
Your charging sessions and ERE registrations are kept for at least 5 years from the calendar year of registration, as required by the Dutch Regeling energie vervoer. This allows the NEa to audit or correct a registration up to 5 years back. For invoices and payouts the fiscal retention period of 7 years applies. You can close your account at any time; everything not covered by these obligations is then deleted.
Does Joulo work for businesses?
Yes. Joulo is available as whitelabel for CPOs, back-offices and energy suppliers. Get in touch via our partner page.
Can I share my account with multiple users?
Business accounts and HOAs can invite members with their own role: a viewer follows along read-only, a manager handles chargers and grid connections, and only the owner manages IBAN, mandate and members. One account can also hold multiple grid connections (EANs) and legal entities with their own payout IBAN. We are working on the same features for personal accounts.
More questions? Ask us
About us
Built by entrepreneurs.
Joulo was founded in 2026 with one mission: to unlock the value of home charging. The team combines fintech, energy and the financial markets • the platform automates everything, from data collection to payout.
Ruben Stolk
Co-founder
Johan Trip
Co-founder
Harm Oosthoek
CFO
You connect once. We do the rest.
20% service fee, paid out quarterly, cancellable yearly.