SolarBESS: Solar PV Calculator

SolarBESS is a complete solar PV calculator and battery storage sizing studio designed for solar installers, electrical engineers, EPC contractors, and energy entrepreneurs. Easily size residential, commercial, off-grid, and hybrid photovoltaic (PV) systems from initial load estimation to final contract deployment. Whether working in the field or the office, SolarBESS guides you through a streamlined engineering workflow to transform raw energy data into fully priced, print-ready solar proposals, itemized Bills of Quantities (BOQs), and financial analysis reports in minutes. Key Features & Sizing Workflow Solar PV & Battery Storage Calculator: Run precision sizing calculations for solar panels, inverter capacity, lithium/lead-acid battery banks, charge controllers, and DC operating voltage windows under various energy autonomy constraints. Intelligent Load Profiling: Build detailed single-phase and three-phase appliance load lists by wattage, quantity, and operating hours. Separate critical backup loads from total consumption to size hybrid and off-grid battery systems accurately. Site & Environmental Solar Data: Account for local peak sun hours (PSH), solar panel tilt, orientation, shading, ambient temperature, and altitude to optimize PV derating, cable sizing, and overall performance. Dynamic BOQ Generator & Cost Estimation: Automatically produce itemized Bills of Quantities covering solar panels, inverters, battery storage, solar cables, circuit breakers, mounting structures, and earthing equipment. Customize labor rates, markups, VAT, and equipment catalogs. Financial ROI & Payback Calculator: Compute annual energy savings, simple payback period, 25-year Net Present Value (NPV), Internal Rate of Return (IRR), and CO₂ carbon offsets using local utility tariffs and escalation rates. Professional PDF Proposals & Documentation: Generate and export client-ready technical proposals, BOQs, and financial reports directly to your mobile device. Includes built-in multilingual documentation in English, French, Spanish, and Portuguese. Country Packs & Localization: Automatically adjust currencies, VAT rates, net-metering limits, and regional electrical rules for quick deployment in global markets. Who is SolarBESS built for? • Solar PV Installers & Technicians • Electrical Engineers & System Designers • Renewable Energy Contractors & EPCs • Solar Sales Representatives & Consultants Simplify your solar design, speed up client quotes, and deliver professional solar PV proposals with SolarBESS: Solar PV Calculator.