UP TO 1 MW · MYANMAR

Size a solar system for your site

Enter daily energy, peak demand and backup needs. Compare an indicative array, inverter and LiFePO₄ battery against your selected site's solar resource.

Solar resourceNASA POWER20 Myanmar locations or custom coordinates · monthly GHI

Site & demand

Updates live

Location

City name

Daily electricity use

kWh/day

Peak simultaneous load

Backup requirement

Essential load

Backup duration

hours

Size PV to recharge backup in one solar day

Equipment preference

System mode

Panel model and power

Panel electrical reference (STC)

Front power (W)

Face area (m²)

Voc (V)

Vmp (V)

Isc (A)

Imp (A)

Voc temperature coefficient (%/°C)

Rear-side gain (%)

Isc is the module's short-circuit current; Imp is its operating current. Rear gain changes the energy preview, not the front-rated array size.

PANEL CIRCUIT

Panel count & string layout

—

Series × parallel must account for every selected panel.

Number of panels

units

Modules in series / string

Parallel strings in array

9 modules / string×1 parallel string=9 connected panels

Use measured loads where possible. Motor starting current, shade and usable roof space need a site check.

Indicative system

PV array———

Selected inverter AC capacity——

LiFePO₄ nominal battery——

Estimated annual PV energy——

Indicative roof area—includes 15% access allowance

Solar resource by month

NASA POWER monthly GHI · estimated daily PV output at 78% performance ratio

PV outputYour demand

Circuit calculations

Connected DC nameplate—

String Voc at STC—

Cold string Voc—

String Vmp at STC—

Array Imp at STC—

Array Isc at STC—

Compare per-MPPT current and string limits with the exact inverter datasheet. Rear-side gain needs a separate current review.

MATERIALS & COST

Bill of materials & cost estimate

Calculated quantities follow the design. Edit actual quantities and include the items you want to cost.

Include in BOM	Item	Description	Calculated qty	Actual qty	Unit	Unit price	Amount

Actual quantity starts at the calculated quantity; edits stay until the item changes or you reset the design. Unchecked rows and blank or invalid quantities/prices are excluded from the subtotal. Exports retain all rows with their inclusion status. Allowances are placeholders, not engineered hardware quantities. Currency tabs keep separate prices; no exchange conversion is applied. Check quotations, taxes, delivery and installation before purchasing.

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NEXT STEPS

Select equipment and quantities

Planning quantities update with the PV array and backup requirement. Confirm exact models and wiring on site.

Inverter selection

Vendor, model and type

Power per unit

AC connection

Number of units

Inverter DC input reference

Maximum DC voltage (V)

Imax operating / MPPT (A)

Maximum short-circuit / MPPT (A)

MPPT minimum (V)

MPPT maximum (V)

Strings on one MPPT

Minimum cell temperature (°C)

MPPTs per inverter

STEP 03 RESULT

Inverter capacity & PV inputs

—

Required AC—

Selected AC—

Selected PV DC—

PV string assignment—

PV strings → MPPT → ACConceptual diagram

LiFePO₄ battery

Uses the backup load and hours from Step 01 and the inverter selected in Step 03.

Capacity per unit / bank

Number of units / banks

Set series/parallel wiring only after confirming module voltage, BMS limits and the inverter battery port.

STEP 04 RESULT

Battery capacity & backup

—

Required nominal—

Selected nominal—

Usable to load—

Estimated backup—

Units / banks → BMS → inverter → loadConceptual diagram

Cable schedule

PV DC copper size

One-way DC run

AC copper size

One-way AC run

PV string home runs

STEP 05 RESULT

Cable quantities

PV DC conductors—

DC section—

AC conductors—

AC section—

Cable choices are a length and quantity schedule, not approved cross-sections. Verify ampacity, installation derating, voltage drop, fault protection and string design. Battery power cable depends on the selected system voltage and BMS.

Protection & earthing

Uses the PV strings, MPPT assignment, inverter fleet and cable routes from Steps 01–05.

Electrical reference

Nominal AC line voltage (V)

Proposed bonding conductor (mm²)

Earthing route allowances

PV frame bond per string (m)

Inverter to earth bar per unit (m)

Earth bar to electrode route (m)

Planned earth electrodes (units)

Switchgear & cabinets

Inverters per AC cabinet

Rooftop mounting allowance

Roof surface

Modules per mounting row

Module span along rail (m)

Stock rail length (m)

Proposed max fixing spacing (m)

These are route and device-position allowances. Select device ratings, PE size and electrode design after fault, lightning, soil and local code review.

Rail and attachment quantities assume two rails per row, 20 mm module gaps and 100 mm rail overhang at both ends. Confirm module clamp zones, roof structure, wind loads, waterproofing and manufacturer spans before ordering.

STEP 06 RESULT

Protection positions & earth route

—

Cold string Voc reference—

DC Isc / grouped MPPT—

AC nominal current / unit—

Bonding conductor route—

PV → DC devices → inverter → AC devices; earth bondsConceptual diagram

PV rows → rails → roof attachmentsConceptual diagram

Manufacturer specifications are examples for China sourcing. Myanmar stock and exact model availability need supplier confirmation. Selected panel source · Selected inverter source

Equipment & design checks

A shortlist to take into detailed engineering and procurement.

Calculation basis

Planning estimate only. Confirm shading, roof structure, string Voc and MPPT current, phase and surge load, battery discharge power and BMS protocol, fault levels, local grid requirements and protection coordination with a qualified designer.

Myanmar solar resource

Monthly average daily GHI (kWh/m²/day). Annual PV output (kWh/year) follows the current array; annual GHI is kWh/m²/year.

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Source: NASA POWER long-term climatology, ALLSKY_SFC_SW_DWN. Annual total sums monthly daily averages × calendar days. Magway and Chauk, and Hpa-An and Mawlamyine, share source grid cells. GHI is a horizontal resource; actual array yield depends on tilt, weather, shade and system losses.

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