“Previously, my own generated solar power flowed into the grid and I saw nothing in return, thanks to Nestore, I convert this worthless power into valuable hot water!”
Prevent waste of your own solar power
Nestore - your hot water heat battery
Nestore stores your solar power safely and provides hot tap water when you need it. The stored heat remains usable for weeks, so you don't have to buy expensive energy in the morning and evening.
90%
Increase your own use of solar energy by up to 90%
30 yrs
A lifespan of 30 years and easy to maintain
5d
Showering for days without recharging stored solar energy
100%
Dutch.
Made in the EU. Developed in collaboration with TNO
Made in the EU. Developed in collaboration with TNO
Hot water consumption
What is the impact of hot water on your energy consumption?
30% to 50% of your energy demand is hot tap water and is fairly the same throughout the year. As a result, the production of hot water has a major impact on your overall energy bill.
What you may not have known about your shower
Your solar panels do not produce electricity every day, especially during the day when the sun shines. But you shower (usually) in the morning and evening when there is no sun. As a result, you will continue to purchase (expensive) electricity with the current alternatives to the central heating boiler. So you pay for your shower when there is no sun. And that is no longer necessary.
Solution: With the Nestore, you can store solar power for several days, so you always have a sustainable hot shower
Netting
Van revenues unto spending: this is the impact of the abolition of netting 2027
Current situation (2026)
Currently, you still benefit from the netting scheme and receive compensation for returned solar energy.
Abolish netting scheme by 2027
The netting scheme will be abolished as of 2027 (read more about abolishing netting here) and you only get the feed-in rate from the energy company. More and more energy companies also pay feed-in costs (also known as a “return penalty”).
In the absence of storage, you still buy expensive energy for that hot shower at peak hours in the morning and evening.
With an average system of 10 solar panels, you return 70% of the generated electricity (approximately 2,450 kWh) to the grid. From 2027, you will only get a fraction of the value in return, while paying the top prize in the evening. For a household with 10 to 14 panels, this loss amounts to €500 to €1,000 per year.
This is the impact of abolition, netting for the van Steenwijck family.
Family with 2 growing children and 10 solar panels
• Generation: 3,500 kWh
• Personal use (30%): 1,050 kWh (This is “free” electricity) • Feedback (70%): 2,450 kWh of electricity cannot be used immediately and therefore flows back into the grid.
Current situation (2026)
€735
Benefit per year
You're crossing out 2,450 kWh (70%)
Value: 2,450 x €0.30 = €735 advantage.
Netting after the abolition (2027)
€0
Benefit per year
You will receive “reasonable compensation” (approx. 50% of the bare rate).
Value: 2,450 x €0.06 = €147 income.
Note: Suppliers can still charge fixed return costs from this, so that the net revenue can go towards €0 or even negative.
Van Steenwijck family
Family with 2 growing children
and 10 solar panels
Go to full story
Difference from 2027
€500 - €800
Loss per year if you do nothing
The difference between €735 received (now) and €147 (soon) is €588. Add to that the fixed return costs (average €100-200/year,) and you end up with a loss of around €500 - €600 per year.
Still
Days
Until the end of netting
Curious about what the abolition of the netting scheme has for an average family?
Who Nestore makes a difference for
Homeowners with
solar panels and dynamic rates
solar panels and dynamic rates
“Finally, I use my energy when I need it and we benefit from affordable charging at off-peak rates”
Families with high comfort needs and limited space, with a lot of hot water use
“Two adolescent children at home,
but the energy bill is under control”
but the energy bill is under control”
Homeowners with solar panels who want to increase their own use
“We are finally using > 80% of our own solar power generation”
Households that seek more independence and sustainability
“Hot water is now becoming as self-sufficient as your solar power.”
The impact of Nestore for the van Steenwijck family
Component
Calculation after installation of Nestore
Impact/year
1. Gas replacement (tap water)
300 m³ of gas (= 30% of gas consumption goes to showers and hot water)
× €1.42 (including increased tax 2026).
× €1.42 (including increased tax 2026).
€426
2. Effect of netting protection
You use ~1,400 kWh (= 40% - from 30% to 70%) of your own electricity directly for showers and hot water. You avoid expensive purchasing (€0.30) and “loss of sales” (€0.06). Net benefit: €0.24/kWh.
€336
3. Avoided return costs
Due to higher self-consumption (from 30% to ~ 70%), you pay less/no fixed return costs to the supplier.
€100
TOTAL BASIS (Permanent Contract)
€862/year
Bonus: Smart Loading (Dynamic)
contract*)
contract*)
Loading at negative/low prices in winter
-+ €50 - €200
Payback period for the van Steenwijck family
• Investment E20: €6,600 (WinterZon Promotion, incl. VAT, excluding installation).
• Payback period: €6,600/€862 = ~7 years (excl. installation costs).
*Our calculations are based on the latest market data, government decisions and independent research reports. Click on the links to cite the source.
1. End of netting scheme: National government: Netting scheme stops | Research by CE Delft & TNO: Financial impact
2. Energy Prices & Taxes 2026: For long-term returns, we use Milieu Centraal's recommended price (€ 1.42/m³). Based on current market rates as of January 2026 (€1.24 - €1.33 per m³ of gas) and the increased energy tax on gas (€0.73 per m³).
Environment Central: Calculating prices 2025-2040 | Eneco: Public levies 2026 | Independer: Prices Jan 2026
3. Hot Tap Water Costs: In an average family, 20% to 30% of gas consumption goes to showers and hot water (approx. 270-300 m³ per year). In well-insulated homes, this amounts to 50% of the total energy bill.
Environment Central: Gas Consumption Showering | Eneco: Hot water costs
4. Losses of Standard Boilers: Reports from Top Sector Energy/RVO show that conventional boilers and heat pump boilers lose 20-40% of energy every day due to downtime. Nestore reduces this to < 1% per day.
RVO/Top Sector Energy: Report on Tap Water Options (Dec 2024)
These Nestore owners are already saving and earning
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“I no longer use gas and now store the energy from my solar panels in Nestore.”
“The installation went very smoothly and smoothly! It's well worth the investment!”
Now temporarily €1,750 discount
When ordering between 1 January and 31 March 2026
Nestore® heat battery
The most powerful hot water heat battery in your home
Maximum efficiency, minimal loss
Use solar energy generated on Monday for a hot shower on Sunday morning.
5-31 days
Energy storage
With daily use, an average household can hold approximately 5 days shower without recharging.
With little or no use, the stored heat remains available for hot shower water for up to 31 days due to the low loss (< 2% per day).
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30+ years
30-year lifespan, easy to maintain
No lithium, no maintenance,
100% recyclable
100%
from Dutch soil,
developed with TNO and circularly produced in the EU.
✓ Smart monitoring via app
✓ Linking with dynamic rates
Installation
What to expect from personal advice to installation?
1. Your request
If you have submitted a request, we will process it within 2 business days.Or call an advisor directly
Mon-Fr 9:00-17:00
Tel: +31 15 206 1451
2. Personal consultation
Every situation is different, which is why we will discuss your situation and what savings are realistic during a personal conversation. So nice.✓ 30 years
Lifespan & low maintenance
✓ Patented
Isolation technology
3. On-site fireplace
During a viewing, one of our authorized installers will discuss the current setup in your home.✓ Up to 8x more compact
Then conventional solutions
✓ Professional network
From certified installers
3. Installation: agree?
After your agreement, the installation will be appropriately arranged by one of our authorized installers.✓ Installed within 1 day
✓ Certified Nestore
dealerships
Questions about installing in your home?
With Nestore
Are you becoming more independent of hot tap water energy
Do you protect yourself against the abolition of netting?
Increase your own solar energy consumption by up to 90%
Lower your structural energy costs
Ready to save €500 - €1,000 a year?
Insight into your situation in 2 minutes