PowerLab
Deterministic, open energy planning calculators for solar panel output, battery runtime, wire voltage drop, EV charging speeds, and home electricity usage.
A startup from the United States.
Deterministic, open energy planning calculators for solar panel output, battery runtime, wire voltage drop, EV charging speeds, and home electricity usage.
A startup from the United States.
This page is designed to help you find out whether PowerLab is good and if it is the right choice for you.
PowerLab is an open-source, client-side computational engineering workbench for distributed clean energy systems. It provides transparent mathematical engines for:
Pure client-side TypeScript execution with zero cloud tracking, paywalls, or accounts.
Listed in
Deterministic Calculation Engine
Pure TypeScript mathematical models with zero external cloud or database dependencies.
Peukert BESS Derating
Dynamic electrochemical capacity loss modeling for battery storage based on discharge C-rate.
NEC 2023 Compliance
Electrical calculations conforming to NFPA 70 Articles 690, 705, and 706 guidelines.
PowerLab replaces closed, proprietary black-box estimation tools with fully transparent, deterministic mathematical engines. Every calculation factors in real physical anomalies, such as Peukert electrochemical capacity loss in battery storage, cold-temperature open-circuit voltage expansion in photovoltaic strings, and locked rotor amperage surges during motor starts. The entire system runs client-side with zero subscriptions, paywalls, tracking, or required accounts.
Traditional renewable energy modeling tools like PVsyst, HelioScope, and Aurora Solar lock critical sizing calculations behind expensive subscriptions and obscure their underlying equations. PowerLab provides fully auditable formulations aligned directly with NFPA 70 / NEC 2023, IEEE 1547-2018, and NREL SAM methodologies. Users get instant, reproducible calculations with complete transparency into every formula, derating coefficient, and assumption used.
PowerLab is built for solar photovoltaic designers, electrical engineers, clean energy researchers, vocational renewable energy apprentices, and independent off-grid system builders who require reliable, standards-compliant sizing calculations without commercial friction.
PowerLab was founded to solve a fundamental problem in clean energy engineering: the lack of open, transparent, and reproducible modeling tools for distributed systems. Sizing errors like ignoring Peukert capacity loss or inverter motor surge regularly cause real-world system failures. PowerLab was engineered to provide an accessible, open-access laboratory where anyone can verify clean energy calculations against established physical and electrical standards.
PowerLab is engineered using modern web and computational technologies: - Pure deterministic TypeScript calculation engines - Next.js App Router and React for responsive user interfaces - Vanilla CSS and design tokens for high-performance mobile accessibility - Client-side browser storage for local scenario preservation - NREL PVWatts V8 API integration for authoritative solar insolation baselines
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Check the traffic stats of PowerLab on SimilarWeb. The key metrics to look for are: monthly visits, average visit duration, pages per visit, and traffic by country. Moreoever, check the traffic sources. For example "Direct" traffic is a good sign.
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