Solar sizing
Correct solar sizing starts with how much energy you use, when you use it and how much sun your exact site receives. StimaPulse turns bills, load lists and meter data into a sized PV array, inverter and battery bank you can compare and defend.
Daily energy (kWh), peak demand (kW) and the hourly profile decide everything else. Daytime loads suit direct solar; evening loads need storage or grid.
Solar output depends on location, tilt, shading, heat and dust. StimaPulse uses NASA POWER solar resource data for your coordinates and applies temperature and soiling derates instead of one fixed national figure.
The inverter must cover peak and surge loads and accept the array's voltage and current. Exact-model checks show Pass, Failed or Not assessed for PV voltage, current, battery voltage and BMS protocol.
How battery checks workBatteries are sized for usable capacity, charge and discharge power and the hours of backup you need, not just nameplate kWh. Recharge after cloudy days and seasonal variation are screened explicitly.
Savings depend on your KPLC tariff, time-of-use windows, demand charges and levies. StimaPulse compares scenarios against reviewed tariff data and shows payback with the assumptions visible.
See reviewed KPLC tariffsEvery saved calculation is versioned with its inputs, so the proposal, supplier comparison and later performance review all point to the same evidence.
Divide the daily energy you want solar to supply (kWh per day) by the usable solar energy at your site (peak sun hours) and by a system performance factor that accounts for heat, dust, wiring and inverter losses. The result is the PV array size in kWp; divide by the panel rating to get the panel count. StimaPulse does this using solar resource data for your coordinates rather than a single national average.
The inverter must carry your highest simultaneous load, handle motor and pump starting surges, and accept the PV array within its voltage and current limits. StimaPulse checks PV string voltage and current against the selected inverter model and flags failed or unassessed checks before a result is accepted.
Only if you need power at night or during outages, or want to shift solar energy into evening use. Grid-tied systems without batteries can still cut daytime bills. StimaPulse compares solar-only, solar with storage and grid or generator combinations so you can see what batteries actually add.
A recent electricity bill or meter readings, a list of the main loads and when they run, your site location, and any backup requirement. A measured load profile from a meter or data logger gives the most reliable result; StimaPulse accepts reviewed CSV readings.
No. Online sizing is a planning estimate. Before purchase, a licensed installer or engineer should survey the roof or ground area, check structural capacity, earthing and protection, and confirm the final equipment and wiring design.
Bring a utility bill, load list, fleet schedule or supplier quote. We will turn it into a sized, costed and comparable plan.