Heat networks
Simulation and sizing
- Hot, LowEx and cold networks
- Meshed networks
- Multiple feed-in points
- Heat losses according to DIN EN 13941
- GIS and Stanet import
- Excel, DXF and GIS export
Planning tool for buildings & districts
Design and simulate heat networks and energy hubs – including economics and scenario comparison. Online in your browser.
Product video
nPro at a glance
From network planning through plant sizing to the project report – the key features of nPro in 90 seconds.
What nPro calculates
Energy hubs
Design of complex energy systems for buildings and districts
- Heat pump and storage sizing
- Solar thermal and PVT according to ISO 9806
- Borehole sizing with regeneration
- Seasonal storage
- Dynamic electricity prices
Economics & reports
Scenario comparison and professional project reports
- Dynamic net present value (VDI 2067)
- Print-ready project report as Word/PDF
- BEW-compliant report export
- Levelized cost of heat
- CO₂ emissions & primary energy
In detail
nPro in action
Simulate districts and heat networks
Demand profiles at hourly resolution
Heating, cooling and electricity demand for every building across 8,760 hours, derived from building type, age and use.
Network hydraulics and losses
Routing, pipe sizing, pressure losses and heat losses are calculated across the entire year.
Design energy hubs
Optimized system sizes
Capacities of heat pumps, boilers, CHP units, PV and storage are optimized as one overall system.
Costs and emissions side by side
Every scenario returns capital and operating costs plus a CO₂ balance, ready to export as a BEW-compliant report.
For your industry
Who uses nPro?
Engineering and planning offices
Calculate several variants in minutes instead of days and compare them on a sound basis.
- Network, generation and economics in one model
- One validated model instead of a new spreadsheet per project
- Project report as Word/PDF, time series as Excel
Municipal utilities and energy suppliers
Map existing heat networks digitally and plan new supply areas.
- Prepare transformation plans and BEW feasibility studies
- Check network capacity for extensions
- Carry out preliminary planning in-house
Energy consulting and advisory
Calculate energy supply concepts and justify them to clients in terms they can follow.
- One flexible model instead of a new spreadsheet per project
- Prepare transformation plans and BEW feasibility studies
- Full project reports in minutes instead of days, as Word or PDF
Our customers
A selection of our customers
- 319
- Engineering & consulting firms
- 63
- Energy suppliers
- 85
- Municipal utilities
What users say
The software is great for quick sizing of district heating networks, especially in districts with existing buildings.
Christian KoidlProject managerisoplus GmbH 
We use nPro for the planning of complex district projects and are thrilled! The intuitive operation, fast calculations and clear results significantly facilitate our work. A reliable and powerful tool that optimally supports our projects.
Alexander GrafeCEOOVE GmbH & Co. KG 
With nPro, we model energy systems for districts and transformation plans. The simulations are a great support in our daily work, the interface is intuitive, and the calculations are highly transparent and easy to understand.
Pascal MüllerProject Manager, Energy ConceptsElbing & Volgmann GmbH 
I have been using nPro for over two years. The tool is ideal for concept development and for clearly visualizing results. Its structured approach makes processes significantly more efficient and helps save valuable time.
Roshan MahatGeneration and Sales DepartmentEisenacher Versorgungs-Betriebe GmbH 
nPro is perfectly suited to our applications. It enables us to design district heating networks and evaluate multiple scenarios in a very short time. No other tool offers this level of scope and detail.
Christoph HanrottTeam Leaderenergielenker service GmbH 
We use nPro for the dimensioning of complex generation plants. This is essential for planning the transformation of large heat networks.
Julian MichelTechnical managersinnogy GmbH 
As the project department of a heat pump manufacturer, we use nPro to quickly respond to economic assessment requests from a wide range of project developers and provide clear, decision-ready insights.
Dipl. Ing. Lukas KerschbaumerProject SalesiDM Energiesysteme GmbH 
nPro is an indispensable planning tool for modern energy engineering: We at GESA value its precise calculations, intuitive usability, and continuous development - complemented by a service that provides true partnership and support.
Christoph DomschkeHead of Energy TechnologyGESA mbH 
The nPro tool is very intuitive and saves a lot of time and effort in the concept phase. It can be used very flexibly - for building and district planning.
Stephan EichlerEichler Ges. für techn. Planungen von Haus- und Industrieanlagen mbH 
The nPro software is very easy to work with, the simulation time is very short and the software is reliable. It is not necessary to spend hours learning because nPro is very intuitive to use.
Mirka KukurugyovaProject engineerEnnatuurlijk A fantastic tool for plant designers or engineering offices, especially with the integrated scenario comparison.
Dipl.-Ing. Robert JasperPublicly appointed and sworn expert My wife scolded me because I spent my evenings with nPro and not with her; great program!
Engineer who wanted to remain anonymous, Local energy utility
Scope of functions
One software instead of a toolchain
Calculate PV yield
PV*Sol
Size borehole fields
GeoHandLight
Simulate load profiles
EnergyPlus
Size CHP units
Sophena
Size solar thermal
ScenoCalc
Dimension pipe networks
pandapipes
Design energy hubs
EHDO
Model microgrids
HOMER
Optimize techno-economically
oemof
Simulate networks
Modelica
Size heat pumps
WPSource
Simulate buildings
TRNSYS
Visualize GIS data
Thermos
Assess districts
RETScreen
Compute sector coupling
EnergyPlan
Integrate hydrogen
pyH2A
Featured in
Funding and awards
The next step is yours
3 weeks with the full feature set – no obligation, no installation.