Polderwarmte
Polderwarmte is a Dutch district heating company that develops and operates the Slim Groen Warmtenet (Smart Green Heat Network) in the Haarlem, Haarlemmermeer, and Schiphol-Rijk regions. It serves businesses, housing corporations, property owners, and developers with sustainable heat sourced from datacenter residual heat, hydrogen, and geothermal.
- Company typePrivate
- Founded2017
- HeadquartersSchiphol-Rijk, Netherlands
- Headcount1–10
- GTM typeB2B
- OfferingServices
What Polderwarmte does
Polderwarmte is a Dutch district heating company operating under the trading name of Polderwarmte.ZON BV (KvK 73116769), headquartered at Tupolevlaan 41 in Schiphol-Rijk. The company develops and operates the Slim Groen Warmtenet (Smart Green Heat Network), a local, isolated pipeline network that delivers sustainable heat — and in some cases cooling — to connected buildings in the Haarlem, Haarlemmermeer, and Schiphol-Rijk regions of the Netherlands. Its heat is sourced from a mix of datacenter residual heat (Penta Infra, Interxion, Iron Mountain), green hydrogen production heat (via H2 Die Lije from 2026), solar thermal, geothermal (permit pending), and aquathermy, with a minimum 85% sustainable energy score verified via the EMG declaration. The system uses communicating meters and a smart grid control layer (Slimme Netbesturing) for predictive, demand-based heat delivery, allowing parts of the network to be shut down seasonally.
Polderwarmte's customer base spans businesses on industrial estates (Waarderpolder, RichPort, Starpark) — including large energy consumers (>20,000 m3 gas equivalent) and smaller SMEs — as well as housing corporations, property owners, resident collectives and VvE's, and project developers. The business model is regulated by the Autoriteit Consument & Markt (ACM) under a cost-plus tariff model with capped returns of approximately 6.5%. Revenue is generated through variable per-GJ heat consumption charges, fixed annual network and metering fees, equipment rental (Warmteafleverset), and one-time connection fees for new buildings. Distribution is conducted via direct enterprise field sales, with account managers conducting site visits, information sessions, and contract negotiations.
Polderwarmte operates as a partner company within the Energie voor Elkaar platform, which bundles knowledge, expertise, and financing for individual heat companies. Long-term capital is supplied by Asper Dorothea, a European investment fund backed by pension funds that finances sustainable infrastructure projects. The company holds a 30-year exclusive concession from Gemeente Haarlem (won in 2023) to develop and operate the Waarderpolder heat network, with targets of 2027 for network realization and 2040 for the area to be fully gas-free. As of 2026, the company is in its growth phase, delivering heat to first customers in the Schiphol region, and is not yet profitable.
Polderwarmte firmographics
Firmographics- Name
- Polderwarmte
- Legal name
- Polderwarmte.ZON BV
- Website
- https://polderwarmte.nl
- Company type
- Private
- Founded year
- 2017
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Polderwarmte is a Dutch district heating company that develops and operates the Slim Groen Warmtenet (Smart Green Heat Network) in the Haarlem, Haarlemmermeer, and Schiphol-Rijk regions. It serves businesses, housing corporations, property owners, and developers with sustainable heat sourced from datacenter residual heat, hydrogen, and geothermal.
- Ownership category
- akta.pro rank
Polderwarmte industry classification
Industry- Product category
- District Heating / Sustainable Heat Networks
- NAICS
- Steam and Air-Conditioning Supply (221330)
- SIC
- Cogeneration Services & Small Power Producers (4991)
- akta.pro primary industry
- District Energy & CHP-Based Microgrids (Thermal Networks + Power) (EUACALAL)
Keywords
Where Polderwarmte is headquartered
LocationHeadquarters
- HQ city
- Schiphol-Rijk
- HQ country
- Netherlands
- HQ region
- Europe
Offices1 record
Markets served
Polderwarmte business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Infrastructure, Supply Chain, Operations, Personnel, Technology or R&D
Revenue model
- Heat Delivery Revenue: Revenue generated from delivering sustainable heat through the collective network to connected buildings. Customers pay for actual heat consumption (variable costs per GJ) plus fixed charges including network maintenance fees, metering costs, and heat delivery equipment rental.
- Connection Fees: One-time connection fees for buildings joining the heat network, including installation of heat delivery equipment. Developers purchase homes with heat network connections included.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Usage-based | Monthly | Variable heat consumption pricing |
| Subscription | Annual | Fixed network and service charges |
Go-to-market motion1 record
Distribution channels1 record
Marketing channels6 records
Polderwarmte product offering
Product offeringCore offering
Polderwarmte develops and operates the Slimme Groene Warmtenet (Smart Green District Heating Network), a local isolated pipe network that delivers sustainable heat and cooling to connected buildings in the Haarlem, Haarlemmermeer, and Schiphol-Rijk regions of the Netherlands. The network is fed by 100% local sustainable sources including datacenter residual heat, green hydrogen production heat, solar thermal, geothermal, and aquathermy, and uses communicating meters with predictive controls for demand-based heat delivery, achieving a minimum 85% sustainable energy score. Customers (businesses, housing corporations, property owners, developers, and homeowner associations) connect to the network via a Warmteafleverset and are billed on a regulated cost-plus tariff structure set by ACM.
Product overview
Polderwarmte operates as a district heating company offering a single unified core product: the Slimme Groene Warmtenet (Smart Green District Heating Network). This system delivers sustainable heat and cooling through a local, isolated pipeline network where hot water flows for building heating. The network uses communicating meters that enable predictive, demand-responsive heat delivery. Customers receive heat via the Warmteafleverset (Heat Delivery Set), which includes metering infrastructure. The offering is priced through variable costs (per GJ consumption) and fixed costs (fixed rights, measurement tariff, and equipment rental).
Differentiator
Problem solved
Functional benefit
Brands
- Warmtebedrijf Polderwarmte: Company self-description used in press releases and official communications.
Products and services
- Slimme Groene Warmtenet (Smart Green District Heating Network) Local isolated pipe network delivering hot water for building heating in the Haarlem, Haarlemmermeer, and Schiphol-Rijk regions. Powered by 100% local sustainable heat sources (datacenter residual heat, hydrogen production heat, solar thermal, geothermal, aquathermy), uses communicating meters for predictive demand-based delivery, and achieves a minimum 85% sustainable energy score verified via EMG declaration. Available to businesses, housing corporations, property owners, project developers, and resident collectives/VvE's.
- Warmteafleverset (Heat Delivery Set) connection service Customer-premises equipment and metering installation that enables buildings to receive and measure heat delivery from the Slimme Groene Warmtenet; supplied as part of the one-time connection package (developers purchase homes with heat network connections included) and billed via a huurtarief warmteafleverset (equipment rental) component.
Quantifiable outcome
- 85% CO2 reduction with fossil-free heat
- +2 more outcomes
Companies that use Polderwarmte
Customer profileNamed customers4 records
Segments5 records
Ideal customer profiles3 records
Polderwarmte technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature2 records
Polderwarmte partnerships and signals
Strategic signalPartnerships
Nine partnerships are on record, tiered core and minor.
- Penta InfracoreEuropean provider of datacenter and colocation services. Penta Infra datacenter AMS01 in Haarlem will be one of the main sources of residual heat at Waarderpolder business park. Target to make 100% of residual heat available to the heat network.
- Energie voor ElkaarcorePlatform for very green and sustainable heat networks bundling knowledge, expertise, and financing for individual heat companies. Polderwarmte is a partner company within this platform. Roel Meijerink serves as CEO of both Polderwarmte and Energie voor Elkaar.
- InterxioncoreDatacenter provider supplying residual heat for heat network at RichPort and Starpark business areas.
- Iron Mountain Data CenterscoreData centers providing residual heat for Waarderpolder through intention agreement signed with Industriekring Haarlem and municipality.
- H2 Die LijecoreBuilding green hydrogen factory near Schiphol. Residual heat from hydrogen production process (via electrolysis, operational from 2026) will be upgraded in temperature and made available for Polderwarmte's smart green heat network.
- Gemeente HaarlemcoreMunicipality closely involved in Waarderpolder project. Conducted joint procurement process (2022) and selected Polderwarmte as partner to develop sustainable heat network to be managed and operated for 30 years. Committed to achieving gas-free Waarderpolder by 2040.
- Industriekring HaarlemcoreBusiness association closely involved in Waarderpolder project. Conducted joint procurement with municipality and signed intention agreement with Iron Mountain for heat supply. Supports sustainable future for the industrial area.
- Parkmanagement WaarderpoldercorePark management organization actively promoting sustainable future and facilitating heat network project. Organizes events and information sessions, acquires businesses for the network.
- Royal HaskoningDHVminorEngineering consultancy providing Routekaart Warmtetransitie (Heat Transition Roadmap) for real estate sustainability. Polderwarmte collaborates on applying this approach to heat networks at business parks like RichPort and Starpark.
Scale indicators7 records
Recent moves8 records
Expansion highlights6 records
Polderwarmte competitors and assessment
Company assessmentDirect peers
- Warmtebedrijf Rotterdam: Rotterdam's municipal heat company operating large-scale district heating networks using residual heat (e.g. from waste incineration and industry) under regulated tariffs; comparable in mission and multi-source heat strategy.
- Ennatuurlijk: Dutch district heating operator (formerly DNWB) delivering sustainable heat via local heat networks across multiple Dutch regions; comparable in scale, customer mix, and ACM-regulated cost-plus pricing model.
- HVC: Heat and waste company in northern Netherlands operating collective heat networks with multi-source sustainable heat supply for residential and industrial customers; directly comparable district heating operator.
- Eneco: Largest Dutch district heating operator, active in multiple regions with multi-source heat networks serving residential and commercial customers under similar ACM-regulated cost-plus tariffs; directly comparable business model to Polderwarmte.
Broad incumbents
- Engie: Global utility with Dutch district heating networks and broader energy services portfolio; comparable in district heating offerings but as part of a much wider multi-energy business.
- Vattenfall: Major European utility with Dutch district heating operations alongside broad generation, supply, and E-mobility activities; comparable in district heating line but operates a much wider portfolio across multiple countries.
Regional players
- Stockholm Exergi: Swedish district heating and cooling operator supplying Stockholm with multi-source heat (waste heat, biomass, heat pumps) under municipal regulation; directly comparable in business model but geographically distinct.
- HOFOR: Municipal utility operating Copenhagen's district heating network with multi-source sustainable heat including waste heat and biomass under regulated tariffs; highly comparable business model, but operating in Denmark rather than the Netherlands.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks7 records
Key highlights7 records
Customer concentration
Polderwarmte social profiles
Digital presencePolderwarmte compliance and trust
Trust signalCompliance1 record
Polderwarmte financial estimates
Financial estimateRevenue estimate
Valuation estimate
Polderwarmte leadership team
Management profileNumber of profiles
Profiles6 records
Polderwarmte subsidiaries and ownership
Company hierarchySubsidiaries4 records
Polderwarmte funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Polderwarmte 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 Polderwarmte
What does Polderwarmte do?
Polderwarmte develops and operates the Slimme Groene Warmtenet (Smart Green District Heating Network), a local isolated pipe network that delivers sustainable heat and cooling to connected buildings in the Haarlem, Haarlemmermeer, and Schiphol-Rijk regions of the Netherlands. The network is fed by 100% local sustainable sources including datacenter residual heat, green hydrogen production heat, solar thermal, geothermal, and aquathermy, and uses communicating meters with predictive controls for demand-based heat delivery, achieving a minimum 85% sustainable energy score. Customers (businesses, housing corporations, property owners, developers, and homeowner associations) connect to the network via a Warmteafleverset and are billed on a regulated cost-plus tariff structure set by ACM.
Is Polderwarmte a public or private company?
Polderwarmte is a private company. It is classified as venture growth investor backed and is currently operating.
When was Polderwarmte founded?
Polderwarmte was founded in 2017. It employs 1 to 10 people.
Where is Polderwarmte based?
Polderwarmte is headquartered in Schiphol-Rijk, Netherlands, in the Europe region.
How does Polderwarmte make money?
Two revenue lines are on record. Heat Delivery Revenue is the primary driver. The others are connection Fees.
Who are Polderwarmte's main competitors?
Direct peers on record are Warmtebedrijf Rotterdam, Ennatuurlijk, HVC and Eneco. Broad incumbents are Engie and Vattenfall. Regional players are Stockholm Exergi and HOFOR.
Does Polderwarmte have an API?
No public API is recorded for Polderwarmte.
What industry is Polderwarmte in?
Polderwarmte's product category is District Heating / Sustainable Heat Networks. Its primary akta.pro industry code is EUACALAL, District Energy & CHP-Based Microgrids (Thermal Networks + Power). Its NAICS code is 221330 and its SIC code is 4991.