Solar tools
Size systems and batteries — then quote the job.
Solar Quote Builder
Price panels, inverters, batteries and labor into a PDF quote.
Open toolSolar Invoice Builder
Invoice a solar job — or turn a quote into an invoice.
Open toolSolar Purchase Order
Order panels, inverters and batteries from suppliers as a PDF PO.
Open toolSolar Job Card
Log on-site install/service work, parts and hours — sign-off ready.
Open toolBackup Runtime Calculator
How long will the battery keep the load running?
Open toolBattery Bank Sizing
kWh of storage needed for a target backup time.
Open toolPV System Sizing
Panels and inverter size from daily energy use.
Open toolPayback & ROI Calculator
Payback period and lifetime savings of a system.
Open toolSolar Panel Tilt & Azimuth Calculator
Best angle and direction for your latitude.
Open toolSolar Panel Output Calculator
kWh a panel or system produces per day and year.
Open toolSolar Charge Controller Calculator
MPPT controller amps for your array and battery.
Open toolSolar String Sizing Calculator
How many panels per string for your inverter.
Open toolSolar Cable Size Calculator
DC cable size for 12, 24 and 48 V systems.
Open toolBattery Charge Time Calculator
Hours to recharge a battery bank.
Open toolExequtechOS
Do the whole job in one place
A calculation is just the start. ExequtechOS takes it from estimate to quote, job card, invoice and paid — for your whole team.
Get started with ExequtechOS- Turn these numbers into a client-ready quote
- Job cards, invoicing & inventory in one place
- Works offline in the field, syncs when you’re back