Run pandapower, OpenDSS & ANDES studies in your browser from $10 per month for personal use, or $40 per user per month for your whole company. No license fees, no setup — or use the free, fully open-source Community Edition forever. What you get for $10 per month Everything in Community Edition, plus the cloud workflow that makes day-to-day power system work effortless. Cloud workspace — nothing to install, access from any browser pandapower, OpenDSS & ANDES solvers for load flow, OPF, short-circuit, harmonics, and dynamics Network Health Dashboard after every load flow Multi-page Engineering Report PDF (cover, diagram, tables) Secure cloud storage for your models Priority email support from the Electrisim team Early access to new features and templates Your subscription funds open-source development Choose your plan Three tiers, no hidden fees. Switch or cancel any time. Community Edition Perfect for getting started Completely free, forever Deploy locally on your computer Full access to all algorithms Open-source code (Apache 2.0) No subscription or card required For individual engineers — cloud workflow and premium features Everything in Community + Cloud-based access, no install Secure cloud storage for models Priority email support Early access to new features Funds open-source development For teams and organizations — per-seat billing with a commercial-use license. Everything in Personal Commercial-use license Per-seat billing for your whole team Choose the number of seats at checkout Centralized billing & invoicing Priority email support Compare with commercial software $500+ / month $10 / month with Electrisim

Same load flow, OPF, and short-circuit standards (IEC 60909). Open source. See full comparison → Why engineers trust Electrisim Independently validated Electrisim’s load flow and short-circuit results were verified against Neplan (commercial software) in master’s thesis work at the University of Palermo. Open source, in the open The full frontend and backend code is public on GitHub under Apache 2.0 — inspect the algorithms, audit the results, or run it yourself. Proven solver engines Built on pandapower (Fraunhofer IEE, 3M+ PyPI downloads), OpenDSS (EPRI, 200K+ downloads), and ANDES (CURENT — transient stability & eigenvalue analysis) — the same engines used in research and industry worldwide. Frequently Asked Questions Billing and subscriptions, product capabilities, licensing, reliability, and more. Billing & subscription Can I cancel anytime? Yes. You can cancel at any time at Stripe Billing Portal. Your subscription stays active until the end of the current billing period — no questions, no retention calls. How does billing work? Billing is handled by Stripe. Personal is charged $10 (USD) every month on the day you subscribed; Company is $40 (USD) per user per month for the number of seats you choose. We never see or store your card details — Stripe handles that with industry-standard encryption and PCI compliance. What happens if my payment fails? Stripe automatically retries the payment for several days and emails you to update the card. Your access continues during the retry window. If the payment still fails, your cloud access pauses — your models are kept safe and re-activate the moment your card succeeds. Do I need to install anything? No. The Professional plan runs entirely in your browser at app.electrisim.com . No downloads, no Python setup. If you prefer a local install, the Community Edition is free and fully open source on GitHub . What if I cancel — do I lose my work? You can export every model as a file at any time, and the Community Edition reads exactly the same format. Cancel and run your saved studies on your laptop forever — your work is yours. Is my data secure? Yes. Connections to Electrisim are over HTTPS, and Stripe handles all payment data so we never store card numbers. See our privacy policy for details. Do you offer a refund? Yes — we have a 30-day refund policy. If Electrisim doesn’t work out within your first 30 days, email us and we’ll refund your first payment. We’d rather have happy users than awkward charges. Do you offer team or annual pricing? Yes. The Company plan is $40 per user per month with a commercial-use license — just choose the number of seats at checkout. For training, on-premise install, a custom annual contract, or volume discounts on larger teams, contact sales and we reply within one business day. Can I support Electrisim without cloud access? Yes. If you use the free Community Edition locally and want to fund development without subscribing to the online app, you can become a supporter for $5 per month on Buy Me a Coffee . This is a voluntary contribution — it does not include access to app.electrisim.com or other cloud features. For the full cloud workflow, choose the Personal plan at $10 per month. General and technical questions What electrical systems can I analyze with Electrisim? Electrisim supports a wide range of electrical power systems: transmission and distribution networks, high voltage (HV), medium voltage (MV), and low voltage (LV), as well as both HVAC and HVDC. You can model and analyze large power grids with thousands of components, onshore and offshore wind farms, PV solar plants, battery energy storage systems (BESS), EV charging installations, and more. Does Electrisim work on Mac, Linux, or Windows? Yes. The cloud edition runs in any modern browser on macOS, Windows, Linux, and mobile. The open-source local version runs natively on all three platforms (Python + Flask backend, web-based frontend), including Apple Silicon Macs. Is Electrisim free to use? Yes. The Electrisim code we publish on GitHub (for example the frontend ) is under the Apache License 2.0 (Apache-2.0). Calculations also use pandapower and OpenDSS , which each have their own open-source terms: pandapower is under the BSD 3-Clause licence , and OpenDSS is distributed by EPRI under a permissive BSD-style licence (the same three-clause pattern as classic BSD). All of these are permissive licences that allow free use, including commercially, subject to each licence’s conditions (such as copyright notices). You can use Electrisim without licensing fees for the software, and optionally subscribe to the cloud service for a low monthly fee if you prefer a hosted solution and want to support open-source development. Is Electrisim a new project? No. Electrisim has been in development since 2014. It builds on mature, well-established engines: pandapower (developed since 2013 by Fraunhofer IEE and University of Kassel, released in 2016), OpenDSS (developed since 1997 by Electrotek Concepts, acquired by EPRI in 2004 and released as open source in 2008), and ANDES (CURENT Engineering Research Center, University of Tennessee, Knoxville). These engines have decades of combined development and validation. Can I trust Electrisim's results? Yes. Electrisim uses calculation engines from pandapower, OpenDSS, and ANDES , which are developed and maintained by renowned institutions: Fraunhofer Institute for Energy Economics and Energy System Technology (IEE) and University of Kassel for pandapower, the Electric Power Research Institute (EPRI) for OpenDSS, and CURENT / University of Tennessee for ANDES. Electrisim is continuously validated against commercial software using our own algorithms, and has been independently verified—for example, in a master's thesis from the University of Palermo comparing Electrisim with Neplan. You can explore more validation work in our Resources section. Why is Electrisim so affordable compared to commercial software? Electrisim is designed to make professional power system analysis accessible to all electrical and power system engineers. By building on open-source engines and offering a low-cost cloud option, we aim to remove the barrier of expensive licences while maintaining high-quality, validated results. What analysis types does Electrisim support? Electrisim supports load flow (power flow), short-circuit analysis, optimal power flow (OPF), harmonic analysis, transient stability and eigenvalue analysis (ANDES), and economic analysis (CAPEX, power losses, energy losses), depending on the chosen engine (pandapower, OpenDSS, or ANDES). You can model generators, transformers, lines, cables, loads, renewable generation, storage, and more. We are working on adding more functionality—see our roadmap for planned features. See our documentation for full capabilities. Can I use Electrisim for commercial projects? Yes. Apache 2.0 (Electrisim’s own repositories), BSD 3-Clause (pandapower), OpenDSS’s BSD-style terms, and ANDES’s open-source licence are all permissive licences that allow commercial use, subject to each licence’s requirements. You can use Electrisim in consulting, grid studies, renewable integration, and any other commercial application without paying licensing fees for the open-source software. Ready to start? Subscribe in under a minute. Cancel anytime in one click. Power system analysis made accessible. Use our open-source software for free locally, or subscribe from $10 per month to support development and access premium cloud features. Pandapower docs Subscription management Copyright @2026 Electrisim. 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