Welcome to J&S Energy
─ ─────

Welcome to J&S Energy
─ ─────
Complete energy solutions with battery storage, solar panels, and fast charging stations — one integrated system.
From generation to maximum return — with intelligent energy management, including subsidies and tax optimization.
Energy storage
For agricultural sector
01.
J&S Energy offers smart energy storage solutions for agricultural businesses looking to save on energy costs and make their operations more sustainable. Our batteries—ranging from 100 kWh to 5 MWh—are ideal for storing solar power, reducing peak demand, and increasing their own energy supply. This allows farmers to maximize their solar panels, prepare for grid congestion, and become more independent of the electricity grid. Our solutions are scalable, robust, and low-maintenance—perfectly tailored to the needs of farming businesses.
Energy storage
For industry
02.
J&S Energy provides powerful and scalable energy storage solutions for industrial applications and businesses. With batteries ranging from 100 kWh to 5 MWh, we help companies reduce peak loads, save energy costs, and operate more reliably during grid congestion or outages. Our systems are ideal for businesses with solar panels or high energy consumption and support the sustainability and electrification of processes. Whether it's for manufacturing, logistics, or utilities, J&S Energy offers reliable storage solutions that adapt to your business's growth.
Energy storage
For homes
03.
J&S Energy offers smart energy storage for households with solar panels. With our home batteries – starting at 5 kWh – you can store solar energy generated during the day and use it yourself in the evening or at night. This lowers your energy bill, increases your independence from the grid, and contributes to a more sustainable home. Our systems are safe, compact, and easy to integrate into existing installations. Ideal for those who want to get the most out of their solar panels – even when the sun isn't shining.
J&S Energy 210KWH battery on trailer

- 3 year full warranty
- Immediately suitable for commercial exploitation
- Flexible loading/discharging & adjustable
- Ready to use plug & play
- Versatile (mobile & flexible)
- High charging capacity (fast charging 2x180KW)
- 210 kWh battery storage
- BMS/EMS
- 6000 cycles
- Liquid-cooled battery
- User-friendly & modern
- Also works with solar energy (hybrid operation)
- Dimensions 2800x1400x1800
- Available for purchase and lease
J&S Energy 50KW-100KWH Cabinet

- 10 year full warranty
- AC/DC coupling solar panels
- 4 MPPT for max. PV yield
- Emergency power / backup function
- 50KW hybrid inverter
- 100 kWh battery storage
- BMS/EMS
- J&S Powerhub
- 7500 cycles
- Air-cooled battery
- Liquid-cooled PCS
- Expandable
- Available for purchase and lease
J&S Energy 50KW-150KWH Cabinet

- 10 year full warranty
- AC/DC coupling solar panels
- 4 MPPT for max. PV yield
- Emergency power / backup function
- 50KW hybrid inverter
- 150 kWh battery storage
- BMS/EMS
- J&S Powerhub
- 7500 cycles
- Air-cooled battery
- Liquid-cooled PCS
- Expandable
- Available for purchase and lease
J&S energy 80KW-200KWH Cabinet

- 10 year full warranty
- AC/DC coupling solar panels
- 6 MPPT for max. PV yield
- Emergency power / backup function
- 80KW hybrid inverter
- 208 kWh battery storage
- BMS/EMS
- J&S Powerhub
- 7500 cycles
- Liquid-cooled battery
- Liquid-cooled PCS
- Expandable
- Available for purchase and lease
J&S energy 80KW-260KWH Cabinet

- 10 year full warranty
- AC/DC coupling solar panels
- 6 MPPT for max. PV yield
- Emergency power / backup function
- 80KW hybrid inverter
- 231 kWh battery storage
- BMS/EMS
- J&S Powerhub
- 7500 cycles
- Liquid-cooled battery
- Liquid-cooled PCS
- Expandable
- Available for purchase and lease
J&S energy 80KW-400KWH Cabinet

- 10 year full warranty
- AC/DC coupling solar panels
- 6 MPPT for max. PV yield
- Emergency power / backup function
- 80KW hybrid inverter
- 418 kWh battery storage
- BMS/EMS
- J&S Powerhub
- 8500 cycles
- Liquid-cooled battery
- Liquid-cooled PCS
- Expandable
- Available for purchase and lease
J&S energy 125KW-260KWH Cabinet

- 10 year full warranty
- AC/DC coupling solar panels
- 10 MPPT for max. PV yield
- Emergency power / backup function
- 125KW hybrid inverter
- 261 kWh battery storage
- BMS/EMS
- J&S Powerhub
- 12.000 cycles
- Liquid-cooled battery
- Liquid-cooled PCS
- Expandable
- Available for purchase and lease
J&S energy 125KW-400KWH Cabinet

- 10 year full warranty
- AC/DC coupling solar panels
- 10 MPPT for max. PV yield
- Emergency power / backup function
- 125KW hybrid inverter
- 418 kWh battery storage
- BMS/EMS
- J&S Powerhub
- 12.000 cycles
- Liquid-cooled battery
- Liquid-cooled PCS
- Expandable
- Available for purchase and lease
J&S energy 125KW-230KWH Cabinet

- 10 year full warranty
- Grid connected
- 125KW inverter
- 231 kWh battery storage
- BMS/EMS
- J&S Powerhub
- 12.000 cycles
- Liquid-cooled battery
- Liquid-cooled PCS
- Expandable
- Available for purchase and lease
J&S energy 50KW-260KWH Cabinet

- 10 year full warranty
- Grid connected
- 50KW inverter
- 261 kWh battery storage
- BMS/EMS
- J&S Powerhub
- 12.000 cycles
- Liquid-cooled battery
- Liquid-cooled PCS
- Expandable
- Available for purchase and lease
J&S energy 125KW-260KWH Cabinet

- 10 year full warranty
- Grid connected
- 125KW inverter
- 261 kWh battery storage
- BMS/EMS
- J&S Powerhub
- 12.000 cycles
- Liquid-cooled battery
- Liquid-cooled PCS
- Expandable
- Available for purchase and lease
J&S energy 250KW-1000KWH CONTAINER

- 10 year full warranty
- AC/DC connection
- Hybrid system (grid + battery)
- Off-grid (autonomous system)
- Grid-connected (on-grid)
- 250KW inverter
- 1000 kWh battery storage
- BMS/EMS
- J&S Powerhub
- 12.000 cycles
- Liquid-cooled battery
- Liquid-cooled PCS
- Expandable
- Available for purchase and lease
J&S energy 375KW-2170KWH CONTAINER

- 10 year full warranty
- AC/DC connection
- Hybrid system (grid + battery)
- Off-grid (autonomous system)
- Grid-connected (on-grid)
- 375KW inverter
- 2170 kWh battery storage
- BMS/EMS
- J&S Powerhub
- 12.000 cycles
- Liquid-cooled battery
- Liquid-cooled PCS
- Expandable
- Available for purchase and lease
J&S energy 2500KW-5000KWH CONTAINER

- 10 year full warranty
- AC/DC connection
- Hybrid system (grid + battery)
- Off-grid (autonomous system)
- Grid-connected (on-grid)
- 2500KW inverter
- 5000 kWh battery storage
- BMS/EMS
- J&S Powerhub
- 12.000 cycles
- Liquid-cooled battery
- Liquid-cooled PCS
- Expandable
- Available for purchase and lease
High-quality systems, in-depth expertise, and full control – without unnecessary costs
J&S Energy BV is part of J&S Verduurzaming BV, an experienced Dutch company that has focused on making homes and commercial buildings sustainable for many years. Building on this solid foundation, we have specialized in energy storage for both the residential and large corporate markets.
What sets us apart is that we handle everything in-house. From engineering and system design to installation, commissioning, and service: we do not work with third parties. This means short lines of communication, maximum control, and a single point of contact fully responsible for the final result.
We do not believe in standalone components, but in complete, integrated energy systems. That is why we design every solution to measure, where battery storage, inverters, control (EMS), and connections to existing installations work together seamlessly. The result is an efficient, reliable, and scalable system that perfectly matches your energy needs.
Our systems are aimed at maximum self-consumption, lower energy costs, and reduced dependence on the electricity grid. Transparency and clarity are central to this: we work with all-in prices, without hidden costs, and provide upfront insight into return on investment and payback period.
With our own team of specialists and a strong focus on quality and service, we ensure that every installation not only functions optimally today but is also ready for the future. This guarantees you a sustainable investment with a lasting return.

With us you choose
- 10-year warranty on the product and performance
- Fits any existing system
- Easy to expand
- Extra long life (6500 cycles private)
- Extra long life (12.000 business cycles)
- Sleek and modern design
- Wall or stackable Plug & Play
- Fast service and technical support
- Fast payback period based on own consumption
// Services \\
What can we do for you?
At JS Energy, we help you with smart and sustainable energy storage solutions. Whether it concerns home batteries, commercial applications, or mobile energy containers for zero-emission construction – we think along with you and deliver custom solutions that fit your situation and future plans.
Latest newsfor private individuals
ERE certificates: how you earn on every charged kWh from 2026
Do you drive electric and charge at home or at work? Then, starting January 1, 2026, you can earn money for every kilowatt-hour you charge. The new ERE system rewards electric drivers for their contribution to cleaner air.
Oil companies are required to purchase ERE certificates for every liter of oil they place on the market. They buy these certificates to offset their emissions, thereby stimulating the greening of transport.
In this article, you will read exactly how it works, what to expect, and how to sign up.

What are ERE certificates (emission reduction units)?
ERE stands for Emission Reduction Unit. In concrete terms, this means: 1 ERE is equal to 1 kilogram of CO₂ equivalent saved compared to a fossil reference such as petrol or diesel. One ERE is therefore equal to a saving of 1 kilogram of CO₂ equivalent. By driving electric instead of using fossil fuels, you achieve demonstrable CO₂ reduction and generate emission reduction.
The Netherlands Emissions Authority (NEa) has introduced this system to replace the old HBE system. The old HBE scheme will be replaced by the ERE system as of January 1, 2026. From that date, the new system applies under the Fuel Transition Obligation (BTV). This means that oil companies and other fuel suppliers are required to blend sustainable fuels or purchase emission reduction units.
This is where it gets interesting for you as an EV driver: with every registered kWh you charge at home, you generate potential certificates. A practical example: suppose you charge your electric car at night with an average of 3 kWh. Over a whole year with 15.000 kilometers driven, this yields measurable EREs. These certificates have a market value because suppliers of polluting products are required to buy them.
The system is not a direct subsidy or cashback promotion. The revenue is generated through the market: supply and demand determine the price fuel suppliers pay for your avoided emissions.
How does the ERE system work in practice?
The process from charging to reimbursement follows fixed steps established by the NEa. First, a certified meter accurately measures the current flowing through the charging station is supplied during each charging session. Subsequently, the share of renewables in the generated electricity is determined—this is currently approximately 50-60% for the Dutch grid average.
The third step is the calculation of the avoided CO₂. The NEa formula works as follows: the number of kWh multiplied by the share of renewable energy, multiplied by 183 grams of CO₂ per MJ (the fossil reference intensity), multiplied by 3,6 MJ per kWh, divided by 1000. For 100% renewably generated electricity, this yields a maximum of 0,6588 ERE per charged kWh.
The registration of charging sessions takes place in the Energy for Transport Register (REV) of the NEa. The new energy certificates are registered in the Energy for Transport Register (REV). This register is linked to your specific electrical connection via the Central Connection Register (CAR) with your unique EAN code. The Central Connection Register determines who the legitimate recipient is.
As soon as the certificates are registered, they become tradable. A booking service provider collects and sells them quarterly to mandatory parties such as Shell or BP. The market price is determined through auctions or bilateral trade—not via fixed government prices.
Approximately how much can you earn in 2026?
The compensation depends on the market price per ERE certificate and the number of kWh you register annually. The payout therefore varies based on current market prices and your charging volume. Based on market expectations and experience with the previous HBE market, you can count on a compensation of approximately €0,10 per charged kWh in 2026.
- The compensation for ERE certificates is between €0,07 and €0,10 per kWh.
- The value of an ERE certificate will be around 10 cents per charged kWh in 2026.
Concrete calculation examples for private individuals:
- 2.000 kWh per year (average usage): approximately €200 gross
- 3.500 kWh per year (moderate family use): approximately €350 gross
- 5.000 kWh per year (frequent drivers): approximately €500 gross
- Charging 40 kWh per week at home: approximately €208 gross per year
In 2026, the total amount you receive from ERE certificates can vary from 200 to 500 euros per year, depending on your load volume.
Please note: the net return will be lower due to the costs of your chosen service provider. Expect 20-40% in fixed fees (€50-100 per year) plus commissions (10-20%). Realistically, €80-€250 net remains, depending on your deal.
The compensation goes to the contract holder of the electricity connection according to the Central Connections Register. This is usually the homeowner, not the tenant or lessee. Conflicts can arise in shared situations—clear agreements in advance are essential.
Which charging station do you need for ERE certificates?
Not every charging station is automatically suitable for VIA certificates. The measurement and registration must meet strict NEa requirements. The most important criterion: your charging point needs a MID-certified meter that accurately records the kWh consumed per charging session.
A separate kWh meter in your meter cupboard usually does not count. The measurement must be traceable to the charging station itself. This means that you need a certified MID meter in or directly at your own charging station.

Examples of suitable home charging stations:
- Zaptec Go 2: integrated MID meter, OCPP compliant
- Alfen Eve Single Smart: with optional MID module
- Wallbox Copper SB: certified variant available
These models cost €600-€1.200 installed. Having a mid-meter added to a charging station costs an extra €200-500 for older models.
Unsure if your charging station is suitable? Explicitly ask your supplier or installer for both “MID-certified” and “ERE-ready” labels. Charging points at homeowners' associations, businesses, and parking lots are also eligible, provided the measurement chain is complete.
Mid meter and ERE certificates
For electric drivers For those who want to get the most out of their charging station, a mid-certified meter is indispensable. This certified meter is the key to obtaining ERE certificates, as it accurately measures how much electricity is charged via the charging station itself. Only with such accurate recording can you claim emission reduction units (EREs) and benefit from the associated compensation.
The Netherlands Emissions Authority (NEa) sets strict requirements for the registration of charged kWhs. A MID-certified meter meets these requirements and guarantees that every charged kilowatt-hour is recorded correctly. This is essential, because only with reliable registration can you demonstrate the actual emission reduction you achieve and thus qualify for ERE certificates.
Please note that the mid-meter must be integrated into the charging station itself. A separate kWh meter in the meter cupboard does not meet the NEa requirements, because only a certified meter in the charging station can directly link charging sessions to your electric car. This prevents registration errors and ensures that every kWh charged counts towards your revenue.
The use of a mid-certified meter provides not only certainty but also a higher return. Because you can accurately demonstrate how much electricity you have charged, you receive the maximum yield from ERE certificates. This makes investing in a charging station With a certified meter, a smart choice for anyone who drives electric and wants to capitalize on their contribution to emission reduction.
In short: do you want to benefit from ERE certificates and receive the highest possible compensation for every kWh charged? Then always check whether your charging station has a MID-certified meter. This ensures correct registration, maximum revenue, and a direct contribution to a more sustainable Netherlands.
How do you apply for ERE registration?
Registration is already possible, even before all details have been finalized in the legislation. The Senate has approved the outlines, and you can prepare to benefit immediately starting in January 2026.
Here is how the registration works step by step:
- Check if your charging station has a MID-certified meter and can digitally register charging sessions via OCPP 1.6+ or CSV export.
- Determine who the contract holder is via your annual energy bill.
- Look up your EAN number via your grid operator (Liander, Enexis, Stedin).
- Choose a booking service provider and compare rates (e.g. 15% + €75/year). Owners of a smart, MID-certified charging station can have their charged kWhs booked by a booking service provider to earn money with their ERE certificates.
- Submit your application before 1 May 2026 for retroactive effect from January 2026.
- Please note that you must share an annual report of the number of kWhs charged at the charging station to be eligible for ERE certificates.
There is no maximum number of participants. However, early registrants often receive better terms. When registering, pay close attention to the contract duration (1, 3, or 5 years), cost structure, and payment frequency—some parties pay quarterly, others annually.
Role of booking service providers and contractual agreements
Most private individuals cannot register EREs themselves via the NEa register. You need a recognized partner for ERE registration. These booking service providers collect your charging data monthly, check for anomalies, register the certificates, and sell them to fuel suppliers.
What should you look out for in the contract?
| Aspect | Important to check |
|---|---|
| Property of ERE's | Stays with you as the charge station owner |
| Duration | Often 1-5 years with automatic renewal |
| exclusivity | Can you switch in the meantime? |
| Termination | Usually 3 months' notice |
| Privacy | Only anonymized kWh readings |
Examples of parties offering this are Den Hartog Zero Emission and Mobilitics, with an effectively higher fee for larger volumes. Compare via platforms that show 12-25% costs and choose providers with dashboards where you can see how many kWh have been booked.
For a lease car at home, the rule is: negotiate a 50/50 split with your employer. For shared HOA charging stations, a kWh allocation key works via RFID badges.
Honorary certificates for employers, lease drivers, and Owners' Associations
It is not just private EV drivers who benefit. Employers, leasing companies, and homeowners' associations can also participate—each with their own points of attention.
For employers: Formally, the reimbursement goes to the energy contract holder. If your employee charges at home and you reimburse the electricity costs, the EREs still end up with the employee. This requires clear agreements. Consider ancillary agreements or a company-subsidized private meter.
For lease drivers: Those who charge at home are often the contract holders themselves. However, employers or leasing companies sometimes want to claim the ERE rights. Without explicit permission, the central connections register takes precedence. Record agreements in your lease contract.
For Owners' Associations and commercial parking facilities: Proportional allocation plays a role in the case of shared charging points. For example: a 1/10 share for one parking space in a garage with 10 charging points. Note the VAT implications on the revenue (21% deductible for companies) and arrange the administration via notarial deeds if necessary.
Tax and legal aspects—such as remuneration in kind—vary by situation. Professional advice is often recommended in 2026.
Frequently asked questions about ERE certificates
Last updated on 07-04-2026
Does my solar panel power count towards the total? By default, home charging is with solar panels calculated based on the average share of renewables in the grid (approximately 50-60%). Only with a strictly measured setup that isolates PV-to-EV flows can you claim 100%.
What if I switch energy suppliers? Update your EAN details with your booking service provider within 14 days to avoid gaps.
Can I combine EREs with other grants? EREs are compliance credits, not subsidies. Combining them with the scrapping scheme is not possible.
How much can you realistically earn? At 3.000 kWh per year and the highest yield in the market: €150-€200 net after costs.
Does smart charging work better for EREs? It does not matter when you charge for the ERE calculation. However, public charging may have different rates.
For the most recent technical details, consult the official NEa documentation.
Start step-by-step with EREs in 2026

Ready to get started? Follow this step-by-step plan:
- Check your charging station: Does this have a MID meter? Can the charging point digitally record the necessary data? Check the manual or app.
- Determine the contract holderCheck Mijn Netbeheer to see who is registered in the name of the connection. This determines who receives the payment.
- Compare booking service providers: Use net return simulators to see who offers the best deal in terms of costs and market access.
- Sign up before May 1, 2026: This is how you benefit retroactively from January 1, 2026.
- Monitor your revenue: Check your reports every six months. In the event of a relocation: arrange for EAN transfer and contract adjustment in a timely manner.
Please note: the number of honorary certificates (number of honorary certificates) you receive depends on the amount of kWh charged, the renewable share of the electricity, and a calculation rule that quantifies the emission reduction. This way, you know exactly how many emission reduction units you can expect based on your charging behavior.
Electric driving now pays off financially too. With the right charging station, a good service provider, and timely registration via e-certificates, you get the most out of every kWh your car charges. Start preparing today—the May 2026 deadline is closer than you think.
Latest newsfor companies
Need temporary power during maintenance or downtime? Avoid delays with a mobile battery.
Maintenance, shutdown, or expansion planned? With the mobile battery from J&S Energy, you have immediate access to reliable power — without grid reinforcement, without diesel, and without delay.
Industrial downtime costs money — every minute counts
In industrial environments, maintenance and downtime (shutdowns) are necessary, but also costly.
During these periods:
- Are installations being shut down
- Are systems being modified or replaced?
- It is necessary to temporarily work with alternative energy
👉 And precisely then, a reliable power supply is crucial.
Every delay means:
- Productivity loss
- Higher costs
- Pressure on planning and staff
The problem: temporary power is complex and limited.
During maintenance or expansion, the existing power supply is often:
- Not available
- Inadequate
- Or temporarily out of service
Traditional solutions such as diesel generators entail risks:
- Noise disturbance
- Fuel logistics
- Maintenance and malfunctions
- Not suitable for all industrial environments
👉 This makes temporary energy a bottleneck.
The solution: mobile battery for temporary industrial energy
With the mobile battery of J&S Energy you have immediate access to a flexible and reliable power supply.
The battery acts as a temporary power source during maintenance or downtime:
- Ready to use immediately without installation
- No dependence on grid capacity
- Suitable for temporary and critical applications
With 210 kWh storage and 180 kW power you can support essential processes.
Continuity during maintenance and expansions
The battery ensures that operations can continue as usual.
Applications:
- Temporary power supply to installations
- Support for maintenance work
- Bridging during upgrades or modifications
👉 No standstill, no delays.
Prevent delays and production losses
Industrial downtime is expensive.
With a portable battery:
- Stay within schedule
- Prevent spillage
- Avoid extra costs
👉 A one-day delay can cost thousands of euros.
Safe and sustainable alternative
In industrial environments, safety and sustainability are important.
With battery storage:
- No emissions
- Fewer risks than fuel solutions
- Suitable for indoor and outdoor use
👉 Safer and future-proof.
Practical example: maintenance at a production company
A production company performs scheduled maintenance on an installation.
Problem:
- Power supply temporarily interrupted
- Work cannot proceed without energy
Solution:
- Deployment of mobile battery J&S Energy
Result:
- Maintenance is proceeding according to schedule.
- No delay
- Continuity of operations
👉 Efficient and risk-free.
Flexible for use in any industrial application
The mobile battery is suitable for:
- Maintenance and shutdowns
- Temporary installations
- Expansions and upgrades
- Test setups
👉 Immediately usable, without complexity.
Key specs
| Specification | Value |
|---|---|
| 🔋 Storage capacity | 210 kWh |
| ⚡ Maximum discharge capacity | 180 kW |
| 🔌 Efficiency | >93% |
| 🔁 Load cycles | > 6500 |
| 🛡️ Protection class | IP67K |
| 🌡️ Temperature | -10°C to +55°C |
👉 Reliable under harsh conditions
The future of industrial energy
Companies are increasingly looking for flexible energy solutions..
Mobile battery storage:
- Reduces dependence
- Increases flexibility
- Improves efficiency
👉 Energy becomes a strategic part of your operation.
Need temporary power during maintenance?
Prevent delays and ensure your work continues.
With the mobile battery of J&S Energy you have immediate access to reliable energy.
✔ Immediately available
✔ No diesel needed
✔ Suitable for industrial applications
✔ Prevents downtime and delays
👉 Request a proposal today
Latest newsfor resellers
Our technology partner
Our Technology Partner in Energy Storage
At J&S Energy we work together with a strategic high-tech partner which has been active in the development and production of advanced energy storage systems and solar energy systems since 2010. Thanks to this collaboration, we combine European market knowledge with years of technical expertise in the field of lithium energy storage.
Our partner has modern production facilities with multiple fully automated production lines and an annual production capacity of no less 5,8GWhThis scale enables fast delivery, even for large projects, without compromising quality or reliability.
Focus on innovation and quality
With more than 200 specialized employees, including 25 engineers in the research & development department, we are constantly working on new solutions for lithium iron phosphate (LiFePO₄) batteries. This close collaboration allows us OEM and custom solutions offerings that are fully tailored to the specific wishes of our customers in the Netherlands and Belgium.
Our partner is certified to all leading international standards, including IEC 0-21, UL-1973, UL-9540A, IEC62133, IEC62219, CE, UN38.3, MSDS. Each system is thoroughly tested to meet the highest standards of safety, reliability and durability.
Jointly responsible for quality and warranty
What makes our collaboration unique is that we, together with our producer, fully support the product.
Not only do we share the same quality standards, we also go jointly the guarantee towards our customers. This means that both we and our technology partner are responsible for the sustainability, performance and service of each supplied system.
In this way we offer our customers maximum security – both technically and organizationally.
Advanced systems for demanding applications
The latest generation liquid-cooled energy storage systems from our partner offers exceptional performance for industrial and commercial applications.
Some of the features are:
- Precise thermal control thanks to integrated liquid cooling and air conditioning;
- High-quality 314Ah LiFePO₄ cells with more than 12.000 cycles expats must register with the local municipality and obtain a depth of discharge up to 89% (DOD);
- Intelligent control via integrated BMS and EMS systems;
- Modular and scalable architecture for various capacity and power levels;
- Full international certification - IEC 0-21, UL-1973, UL-9540A, IEC62133, IEC62219, CE, UN38.3, MSDS.
Versatile and future-oriented
Our joint solutions are used worldwide in:
- Combinations of solar energy with storage
- Peak shaving and optimization of energy costs
- Industrial installations, data centers and construction sites
- Emergency power and grid stabilization projects
- Companies that strive for CO₂ reduction, ESG targets and energy independence
This partnership allows us to provide our customers with innovative, safe and affordable energy storage solutions, developed according to the strictest quality standards and suitable for tomorrow's energy demands.
// Why J&S Energy \\
Choosing quality and craftsmanship
01
Go for certainty
__ _______
You receive a 10-year warranty on both product and performance. Thanks to a lifespan of up to 6.500 or even 11.000 charge cycles for our larger business battery storage, you are investing in quality and long-term reliability. Our competitive all-in prices make this even more attractive.

02
Payback period
__ _______
Payback within 4 to 5 years – and that purely based on your own consumption. Thanks to our competitive all-in prices, we make this profitable investment accessible to everyone. Private individuals might consider a home battery, while our business clients can think of systems with a capacity of up to 100 MWh.
03
Service and monitoring
__ _______
Fast service and technical support,
View everything in real-time via our J&S Energy app – from energy consumption to storage status. This way, you always stay in control, wherever you are. We actively monitor the situation and can react before you even notice it yourself.
04
Tailor-made solutions
__ _______
Every situation is different – that is why we think along with you. Whether it concerns a home that is heated entirely electrically, a farmhouse with solar panels Whether it is a commercial building without panels or a business premises, we supply energy storage that perfectly matches your needs and consumption. Personal advice, without the fuss.
Transparent all-in prices
15kWh stackable
- 10 year full warranty
- Installation
- BMS
- Own app
- Hybrid inverter 5KW
- Control box
- Expandable
- Available for purchase and lease
20kWh stackable
- 10 year full warranty
- Installation
- BMS
- Own app
- Hybrid inverter 5KW
- Control box
- Expandable
- Available for purchase and lease
25kWh stackable
- 10 year full warranty
- Installation
- BMS
- Own app
- Hybrid inverter 5KW
- Control box
- Expandable
- Available for purchase and lease
30kWh stackable
- 10 year full warranty
- Installation
- BMS
- Own app
- Hybrid inverter 5KW
- Control box
- Expandable
- Available for purchase and lease
35kWh stackable
- 10 year full warranty
- Installation
- BMS
- Own app
- Hybrid inverter 5KW
- Control box
- Expandable
- Available for purchase and lease
40kWh stackable
- 10 year full warranty
- Installation
- BMS
- Own app
- Hybrid inverter 5KW
- Control box
- Expandable
- Available for purchase and lease
125KW-231Kwh Cess
- 10 year full warranty
- Hybrid inverter
- BMS/EMS
- 12.000 cycles
- J&S Energy Powerhub
- Liquid cooled
- Available for purchase and lease
50KW-261Kwh Cess
- 10 year full warranty
- Hybrid inverter
- BMS/EMS
- 12.000 cycles
- J&S Energy Powerhub
- Liquid cooled
- Available for purchase and lease
125KW-261Kwh Cess
- 10 year full warranty
- Hybrid inverter
- BMS/EMS
- 12.000 cycles
- J&S Energy Powerhub
- Liquid cooled
- Available for purchase and lease
250Kw-1MWh Container
- 10 year full warranty
- Hybrid inverter
- BMS/EMS
- 12.000 cycles
- J&S Energy Powerhub
- Liquid cooled
- Available for purchase and lease
375KW-2.17MWH container
- 10 year full warranty
- Hybrid inverter
- BMS/EMS
- 12.000 cycles
- J&S Energy Powerhub
- Liquid cooled
- Available for purchase and lease
2.5mw-5mwh container
- 10 year full warranty
- Hybrid inverter
- BMS/EMS
- 12.000 cycles
- J&S Energy Powerhub
- Liquid cooled
- Available for purchase and lease
Frequently Asked Questions
Is a home battery profitable without energy market trading?
Yes. All JS batteries Energy earns itself back through increased own consumption – even without having to trade on the energy market or imbalance markets.
📊 Calculation example:
10 kWh battery: investment €5.227 (including installation and inverter)
Annual savings: €950 (based on 2.700 kWh extra self-consumption)
Payback period: 5,5 years
Lifespan: average 6.600 cycles → ±15 years
➡️ After the payback period you still have ±9 years of “free electricity”.
What is the average annual yield of a 10 kWh home battery?
A 10 kWh home battery significantly increases your self-consumption of solar energy, meaning you need to purchase less electricity from the grid. Especially with a dynamic energy contract, you can save even more by smart charging and discharging.
📊 Calculation example:
You consume 4.500 kWh annually
Your solar panels generate 4.500 kWh
Without a battery you use 30% yourself → 1.350 kWh
With battery you use 80% yourself → 3.600 kWh
You pay €0,35 per kWh when purchasing
Savings:
(3.600 – 1.350) kWh = 2.250 kWh extra self-consumption
2.250 kWh × €0,35 = €787,50 savings per year
➡️ In combination with dynamic prices this can still amount to €1.200 per year.
What is a home battery?
A home battery stores excess energy from your solar panels, so you can use it later—for example, in the evening or on cloudy days. This way, you use more of your own power and save on grid costs.
How does the collaboration with solar panels work?
Solar panels generate electricity during the day. Any unused power is stored in the battery. If you need it later, it's supplied from the battery. Dynamic pricing allows the battery to automatically charge when prices are low and discharge when prices are high.
What capacities does JS Energy provide?
We offer systems from 5 kWh to 5 MWh — from household to industrial scale.
How many charge cycles do your batteries last?
Our batteries can handle 6500 to 11.000 charge cycles, which means a lifespan of approximately 15–30 years, depending on usage.
What is the price intensity?
Installation starts at around €3500 for a 5 kWh system, increasing depending on capacity and additional options such as emergency power and dynamic control.
Are the batteries also for companies?
Yes – our MWh systems are ideal for peak shaving, use on construction sites or during events and can operate emission-free.
Can the battery be taken on a mobile device?
Absolutely! We supply mobile energy containers suitable for applications such as emission-free construction or temporary power supply.
Are the batteries expandable?
All our systems are modular. You can easily start with a smaller capacity and scale up later.
Does the battery provide emergency power?
Not standard, but possible with a backup inverter and automatic switching system for power in the event of a mains failure.
How safe are the batteries?
Manufactured with high-quality safety technology, including overload and temperature protection, galvanic isolation, self-extinguishing housing and VDE/LFP certification.
How does the installation work?
Our certified technicians handle the complete installation, including inverter, power module, battery modules, and – if desired – emergency power switching. They also assess suitable indoor or outdoor placement.
How do I monitor my battery usage?
Our accompanying J&S Energy app allows you to monitor real-time consumption, storage, and status, and adjust settings.
What is the difference between power (kW) and capacity (kWh)?
kWh = total amount of stored energy; kW = charging/discharging rate. Both are important for your system's performance.
Is a home battery profitable?
Yes, our home batteries/energy storage systems all have a positive payback period of 4 to 5 years. This payback period is based purely on our own consumption – NOT on uncertain trading on energy markets or imbalance markets!
Can I trade on the energy market with the battery?
Yes. It's possible, but we're not dependent on it in terms of payback time! With a smart battery, you can charge at low prices and discharge at peak prices via the EPEX (day-ahead) market. This requires a dynamic contract and EMS.
Are there subsidies or VAT refunds?
Individuals: VAT refunds are possible if you are considered an entrepreneur. Businesses: Energy Investment Deduction (EIA) may be eligible. Local subsidies vary by municipality.
Which battery type is suitable?
Our batteries are all made of Lithium Iron Phosphate (LFP, safe).
Can I install the battery myself?
Technically possible, but we strongly recommend having a certified specialist install it for safety and warranty reasons.
Is a battery waterproof?
Some models have IP ratings (such as IP55 or IP66), but full outdoor placement requires shelter and temperature management.
How much does my own installation cost approximately?
In the Netherlands, installation costs usually vary from a few hundred to thousands of euros extra, depending on adjustments in the meter box or wiring.




