SolarBESS: Solar PV Calculator

SolarBESS is a 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. 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. BOQ Generator & Cost Estimation: produce itemized Bills of Quantities for solar panels, inverters, battery storage, solar cables, circuit breakers, mounting structures, and earthing equipment. Customize labor rates, markups, VAT, and equipment catalogs. Built for use in the field and in the office, it guides you through a nine-step workflow: Project Info, Loads, Site Data, Design Preferences, Results, Bill of Quantities, Financials, Export, and Documents. Transform raw client energy data into a fully priced, professional, print-ready proposal in minutes. Key Features & Workflow Project Configuration:Set project parameters, client details, and target markets. Country packs automatically account for local currencies, VAT policies, net-metering limits, and relevant regulatory notes. Load ProfilingCreate detailed appliance and equipment lists by phase, wattage, quantity, and daily operating hours. Identify critical loads for backup during grid outages while monitoring live summaries of daily energy consumption and peak demand. Site & Environmental Data: Account for peak sun hours, panel tilt, orientation, shading, and more Bills of Quantities (BOQs) & Pricing: Generate detailed, itemized bills of quantities covering solar panels, inverters, batteries, cables, breakers, mounting systems, earthing equipment, and other project components. Apply custom margins, labor charges, and design fees, or import your own equipment catalogues and CSV pricing templates Financial Analysis: Calculate annual energy savings, simple payback period, 25-year Net Present Value (NPV), and more. Professional PDF Exports & Documentation: Export print-ready Technical Proposals, detailed BOQ estimates, and Financial Analysis reports directly to your device. NOT A GOVERNMENT APP SolarBESS Sizing Studio is an independent tool by Nextritech. It is not affiliated with, endorsed by or representing any government entity, utility or regulator. Regulatory, tax, net-metering and subsidy information shown is general guidance only and may be out of date: always confirm with the official source before acting. Official sources: Kenya: https://www.epra.go.ke · Brasil: https://www.gov.br/aneel · India: https://mnre.gov.in · México: https://www.gob.mx/cre · Chile: https://energia.gob.cl · https://www.cne.cl · Colombia: https://creg.gov.co · España: https://www.cnmc.es · Puerto Rico: https://energia.pr.gov · Tanzania: https://www.ewura.go.tz · Uganda: https://www.era.go.ug · Nigeria: https://nerc.gov.ng · Malaysia: https://www.seda.gov.my · Philippines: https://doe.gov.ph · Australia: https://cer.gov.au · New Zealand: https://www.ea.govt.nz · Singapore: https://www.ema.gov.sg · USA: https://www.energy.gov · Canada: https://natural-resources.canada.ca · France: https://www.cre.fr · Sénégal: https://www.crse.sn · Côte d'Ivoire: https://anare.ci · South Africa: https://www.nersa.org.za

• Clear "not a government service" notice, with links to the official regulator websites for your market, in the app, reports and Terms • Subscription renewal and cancellation terms now shown before you subscribe; Terms and Privacy links on the sign-in screen • Faster, more reliable start, including with a weak connection • Updated Privacy Policy and Terms