Wattwatt
Wattwatt is a Dutch green energy provider selling integrated solar, home battery, EV charging, HVAC, and heat pump systems to residential and commercial customers in the Netherlands, with proprietary monitoring software and grid-market participation.
- Company typePrivate
- Founded2022
- HeadquartersDen Haag, Netherlands
- Headcount11–50
- GTM typeB2C
- OfferingHardware or Manufacturing
What Wattwatt does
Wattwatt is a Dutch private limited company (B.V.) headquartered in Den Haag that sells integrated green-energy systems to residential and commercial customers across the Netherlands. Its product portfolio spans five categories: solar photovoltaic installations, home battery storage, EV charging infrastructure, air conditioning, and heat pumps. Underlying technology is sourced from tier-1 partners including Enphase Energy for home batteries and Huawei for string inverters, layered with an in-house proprietary application that monitors and controls the full hardware stack, including dynamic load balancing and bidirectional (V2G) charging.
The company's business model is multi-channel and recurring in parts. Wattwatt sells equipment outright (e.g., home batteries priced €5,520–€7,370) and offers a monthly rental/subscription option (€60–€80/month) that converts hardware sales into recurring revenue. It also participates in Dutch grid service markets — FCR, aFRR, and imbalance — via aggregated customer assets, opening an asset-light revenue line. Go-to-market runs through a nationwide VCA-certified installer network that supports a 3-week installation lead time, with customer trust indicated by a 9.8/10 review rating across platforms.
Beyond the residential core, Wattwatt has extended into commercial and industrial customers through containerized Battery Energy Storage Systems (BESS) up to 3.44 MWh and through named accounts including Claro Carwash, Wasdas (multi-location), and Paardenmanege Voorschoten. Additional product adjacencies include the Water Accu, a water-based thermal storage alternative to lithium-ion. The company is privately held (KvK 88498476) and discloses no external funding rounds or revenue figures.
Wattwatt firmographics
Firmographics- Name
- Wattwatt
- Legal name
- Watt Watt B.V.
- Website
- https://wattwatt.nl
- Company type
- Private
- Founded year
- 2022
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Wattwatt is a Dutch green energy provider selling integrated solar, home battery, EV charging, HVAC, and heat pump systems to residential and commercial customers in the Netherlands, with proprietary monitoring software and grid-market participation.
- Ownership category
- akta.pro rank
Wattwatt industry classification
Industry- Product category
- Residential Solar and Energy Storage Installation
- SIC
- Electronic & Other Electrical Equipment (No Computer Equip) (3600)
- akta.pro primary industry
- Renewable Distributed Generation (Rooftop/Onsite Solar, Small Wind, Small Hydro) (EUACALAJ)
- akta.pro secondary industries
- Utility-Scale BESS Project Development & Ownership (IPP/Developer) (EUAFAAAA), Energy Storage Components for Renewables Manufacturing (BESS Packs, PCS, Thermal Management) (EUAMAHAI), Solar Inverters, Power Electronics & MLPE (String/Central Inverters, Optimizers, Microinverters) (EUAMABAE)
Keywords
Where Wattwatt is headquartered
LocationHeadquarters
- HQ city
- Den Haag
- HQ country
- Netherlands
- HQ region
- Europe
Offices1 record
Markets served
Wattwatt business model
Business model- GTM type
- B2C
- Offering type
- Hardware or Manufacturing
- Cost components
- Personnel, Operations, Marketing or Sales, Technology or R&D, Supply Chain
Revenue model
- Solar Panel Sales and Installation: One-time sale and installation of solar panel systems for residential and commercial customers. Options include purchase or rent/lease models. Revenue generated from equipment, installation, and related services.
- Home Battery (Thuisbatterij) Sales and Rental: Sale or monthly rental of home battery systems. Purchase prices for residential batteries range from €5,520 to €7,370. Rental options start at €60/month. Additional revenue from extended warranties and maintenance contracts.
- EV Charging Station Sales and Rental: Sale or monthly rental of smart EV charging stations. Revenue includes installation services and optional maintenance contracts. Smart charging features add recurring value.
- Air Conditioning and Heat Pump Sales and Installation: One-time sale and installation of air conditioning systems and heat pumps for residential and commercial customers.
- Commercial BESS Solutions: Large-scale battery energy storage systems (BESS) sold to commercial customers for demand charge reduction, load shifting, grid congestion management, and participation in energy markets (FCR, aFRR, imbalance). Revenue from system sale, installation, and ongoing monitoring services.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| One time/ perpetual license | Pay-as-you-go | Solar panels - purchase or rent/lease |
| One time/ perpetual license | Pay-as-you-go | Home battery purchase - 5 kW |
| One time/ perpetual license | Pay-as-you-go | Home battery purchase - 8 kW |
| One time/ perpetual license | Pay-as-you-go | Home battery purchase - 10 kW |
| Subscription | Monthly | Home battery rental - 5 kW |
| Subscription | Monthly | Home battery rental - 8 kW |
| Subscription | Monthly | Home battery rental - 10 kW |
| One time/ perpetual license | Pay-as-you-go | EV charging station - purchase |
| Subscription | Monthly | EV charging station - rental |
| Unit Pricing | Pay-as-you-go | Air conditioning - purchase with installation |
| Unit Pricing | Pay-as-you-go | Heat pump - purchase with installation |
Go-to-market motion2 records
Distribution channels3 records
Marketing channels6 records
Wattwatt product offering
Product offeringCore offering
Watt Watt B.V. sells and installs green-energy hardware for Dutch residential and commercial customers, including solar panels (zonnepanelen), home batteries (thuisbatterij), EV charging stations (laadpaal), air conditioning (airco), heat pumps (warmtepomp), and commercial Battery Energy Storage Systems (BESS). Offerings are available as outright purchase or, for select products, on a rental basis, and are supported by a proprietary monitoring application for system oversight.
Product overview
Watt Watt is a Dutch renewable energy company offering an integrated product ecosystem for residential and commercial energy solutions. The core portfolio includes Zonnepanelen (solar panels in glass-foil and glass-glass variants with micro-inverter, string inverter, or optimizer options), the Thuisbatterij (home battery for energy storage with Enphase technology, including the Water Accu as an alternative solar hot water solution), Laadpaal (smart EV charging stations with dynamic load balancing and V2G capabilities), Airco (energy-efficient air conditioning), and Warmtepomp (heat pumps). All products are managed through the Watt Watt App for real-time monitoring. For commercial customers, they offer Zakelijke Batterij (large-scale BESS solutions from 100kW/215kWh to 3.44MWh) and Zakelijk Laadpaal systems. Products are available for purchase or rental, with full installation services and VCA-certified technicians following NEN-1010/NEN-3140 standards.
Differentiator
Problem solved
Functional benefit
Products and services
- Solar Panels (Zonnepanelen) Solar photovoltaic panel systems supplied and installed for Dutch residential customers to generate on-site renewable electricity.
- Home Battery (Thuisbatterij) Residential battery storage system that stores electricity for use in the home; available for purchase or on a rental basis.
- EV Charging Station (Laadpaal) Electric vehicle charging station supplied and installed for residential customers, with smart charging functionality.
- Air Conditioning (Airco) Residential air conditioning units supplied and installed for Dutch homeowners.
- Heat Pump (Warmtepomp) Residential heat pump systems supplied and installed to provide heating (and where applicable, cooling) for Dutch households.
- Commercial Battery Energy Storage System (BESS) Commercial-grade Battery Energy Storage System (BESS) supplied and installed for business customers seeking on-site energy storage.
Quantifiable outcome
- Reduces energy bills by up to 30% with air conditioning systems
- +7 more outcomes
Companies that use Wattwatt
Customer profileNamed customers7 records
Segments3 records
Ideal customer profiles2 records
Wattwatt technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature6 records
Wattwatt partnerships and signals
Strategic signalPartnerships
Four partnerships are on record, tiered supporting and core.
- Van der Valk Solar SystemssupportingVan der Valk Solar Systems provides the mounting structures (underconstruction) for Watt Watt's solar panel installations. The robust substructure is designed to maximize reliability and durability of solar panel installations even under challenging conditions. This is a product/integration partnership where the supplier provides essential mounting infrastructure.
- Enphase EnergycoreEnphase Energy supplies the home battery systems sold and installed by Watt Watt. The Enphase battery is developed in the United States and designed for optimal lifespan and safety, featuring high-quality design, high storage capacity, 15-year product warranty, and compatibility with any solar system. This is a core technology partnership for the home battery product line.
- Huawei (for string inverters)supportingHuawei string inverters are used in some solar panel installations, as seen in project examples. Provides the central inverter technology for converting DC to AC in solar installations. Partnership enables multiple inverter options for different customer needs.
- Charge Point Operators (CPOs) / EV EcosystemsupportingWatt Watt's smart EV charging stations are designed to be compatible with all electric vehicle brands (Tesla, BMW, Volvo, Fiat, etc.) and use open standards for charging. The charging management software enables integration with the power grid, vehicles, and homes for smart charging.
Scale indicators7 records
Recent moves6 records
Expansion highlights6 records
Wattwatt competitors and assessment
Company assessmentEmerging players
- Tibber: Digital-first energy supplier active in the Netherlands with smart-charging and home-energy-management software — emerging overlap with Watt Watt's app-driven, dynamic-load-balancing value proposition.
Direct peers
- Zonneplan: Largest Dutch residential solar and battery installer with integrated solar, home battery, EV charging, heat pump, and monitoring app — the closest comparable bundled offering to Watt Watt's stack and the primary share-of-voice competitor in the Dutch residential market.
- Zelfstroom: Dutch residential solar and battery installer with a national installation footprint and direct-to-consumer sales model, directly overlapping Watt Watt's residential solar-plus-storage core.
- Pure Energie: Dutch green energy supplier and installer offering residential solar, batteries, and EV charging as part of its green-tariff customer proposition — competing for the same Dutch household budget as Watt Watt.
- Zonnepanelen.nl: Dutch solar comparison and installation platform with a national installer network, directly competing for Watt Watt's online quote-driven residential solar acquisition funnel.
- Solarclar: Dutch residential and SME solar installer with a comparable nationwide sales-and-install model, directly competing with Watt Watt for Dutch solar customers and project pipelines.
Broad incumbents
- ANWB Energie: Energy brand of Dutch mobility association ANWB, offering green tariffs and solar/heat-pump propositions, competing for the same Dutch residential sustainability customer as Watt Watt from a trusted-brand incumbent position.
- Greenchoice: Dutch green energy supplier offering 100% renewable tariffs plus solar-panel and EV-charging offerings, competing for the same Dutch consumer energy wallet as Watt Watt from a supplier-led position.
- Vattenfall (Netherlands): Dutch operations of Swedish utility Vattenfall, supplying electricity plus residential solar, heat pumps, and EV charging — competes with Watt Watt across multiple categories but with a broader incumbent portfolio and balance sheet.
- Eneco: Major Dutch energy utility offering solar, heat pumps, EV charging, and increasingly home batteries as part of a broad energy portfolio — overlaps Watt Watt's offerings but competes from a much larger utility base.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
Wattwatt social profiles
Digital presenceWattwatt financial estimates
Financial estimateRevenue estimate
Valuation estimate
Wattwatt leadership team
Management profileNumber of profiles
Wattwatt funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Wattwatt M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Wattwatt
What does Wattwatt do?
Watt Watt B.V. sells and installs green-energy hardware for Dutch residential and commercial customers, including solar panels (zonnepanelen), home batteries (thuisbatterij), EV charging stations (laadpaal), air conditioning (airco), heat pumps (warmtepomp), and commercial Battery Energy Storage Systems (BESS). Offerings are available as outright purchase or, for select products, on a rental basis, and are supported by a proprietary monitoring application for system oversight.
Is Wattwatt a public or private company?
Wattwatt is a private company. It is classified as unknown and is currently operating.
When was Wattwatt founded?
Wattwatt was founded in 2022. It employs 11 to 50 people.
Where is Wattwatt based?
Wattwatt is headquartered in Den Haag, Netherlands, in the Europe region.
How does Wattwatt make money?
Five revenue lines are on record. Solar Panel Sales and Installation is the primary driver. The others are home Battery (Thuisbatterij) Sales and Rental, EV Charging Station Sales and Rental, air Conditioning and Heat Pump Sales and Installation and commercial BESS Solutions.
Who are Wattwatt's main competitors?
Tibber is listed as an emerging player. Direct peers are Zonneplan, Zelfstroom, Pure Energie, Zonnepanelen.nl and Solarclar. Broad incumbents are ANWB Energie, Greenchoice, Vattenfall (Netherlands) and Eneco.
Does Wattwatt have an API?
No public API is recorded for Wattwatt.
What industry is Wattwatt in?
Wattwatt's product category is Residential Solar and Energy Storage Installation. Its primary akta.pro industry code is EUACALAJ, Renewable Distributed Generation (Rooftop/Onsite Solar, Small Wind, Small Hydro), with a secondary code of EUAFAAAA, Utility-Scale BESS Project Development & Ownership (IPP/Developer). Its SIC code is 3600.