How do I calculate the right inverter size?

Add up the consumption of all devices you want to run simultaneously (in watts), then add 20-30% safety margin. Example: if your total load is 3500W, choose a 5000W inverter.

What is the difference between 24V and 48V inverter?

48V inverter is more efficient and needs thinner cables (cheaper). 24V is simpler and needs only two batteries. For loads above 3000W, 48V is preferred.

Can I run an AC on a 3000W inverter?

Not recommended. ACs need high surge power. Minimum for running 1-ton AC is 5000W inverter.

What is the difference between On-Grid and Off-Grid?

Off-Grid: Works independently with batteries, ideal for frequent outages (OPTI-Solar). On-Grid: Connected to government grid, reduces bills (Huawei).

How many batteries do I need with the inverter?

Depends on required operating hours. Rule: every 1000W needs about 2kWh of batteries for 2 hours operation. Pylontech US5000 (4.8kWh) is enough for 2400W for 2 hours.

Are OPTI-Solar inverters suitable for Yemeni climate?

Yes, Handy Ultra series is designed for high temperatures (up to 50°C) and tolerates dust and humidity. Thousands of units work successfully in all Yemen regions.

When should I choose Huawei instead of OPTI-Solar?

Choose Huawei if: you have stable government electricity, want to reduce bills, large commercial/industrial project. Choose OPTI-Solar if: frequent outages, want complete independence, home or small/medium facility.

Comprehensive Reference Guide

Inverter Selection Guide in Yemen

How to choose the best inverter for your home or project? This guide helps you make the right decision based on your actual needs and Yemen conditions.

Quick Summary

For small homes (no AC): SP3000 is enough
For homes + one AC: SP5000 is the first choice
For large villas + 2 ACs: SP8000 with Dual MPPT
For large commercial projects: Huawei SUN2000 Series

What is an Inverter?

The inverter is the heart of the solar energy system. Its main function is to convert direct current (DC) from solar panels or batteries to alternating current (AC) used by home appliances.

Off-Grid Inverters

Work completely independent of government grid, rely on batteries for energy storage.

OPTI-Solar

SP1000-SP11000

On-Grid Inverters

Connected to government grid, reduce bills by using solar energy first.

Huawei

SUN2000 Series

Yemen-Specific Considerations

High Heat

Temperatures reach 45°C+ in summer. Choose inverter with effective cooling.

Coastal Humidity

Aden and Hudaydah need inverters resistant to humidity and salinity.

Dust

Dust filters and regular cleaning necessary to extend inverter life.

Power Outages

Frequent outages make Off-Grid the best choice for most users.

Recommendation Table by Usage

For Homes & Villas

Scenario	Loads	Inverter	Power
Small home (2-3 rooms)	Lighting, fans, TV, small fridge	SP3000	3000W
Medium home (3-5 rooms) + AC	All above + 1-ton AC	SP5000	5000W
Large villa (5+ rooms) + 2 ACs	Full home + 2 ACs	SP8000	8000W
Luxury villa (7+ rooms) + 3 ACs	Full villa + pool	SP11000	11000W

For Commercial Facilities

Scenario	Loads	Inverter	Power
Small commercial shop	Lighting, POS, display fridge	SP3000	3000W
Clinic / Pharmacy	Medical equipment, cooling, lighting	SP8000	8000W
Large commercial facility	Hotel, restaurant, shopping center	SUN2000-20KTL	20kW

For Factories & Large Projects

Scenario	Loads	Inverter	Power
Small / medium factory	Production lines, industrial lighting	SUN2000-50KTL	50kW
Artesian well / large farm	Pumps up to 75 HP	SUN2000-100KTL	100kW

OPTI-Solar vs Huawei Comparison

OPTI-Solar Handy Ultra

Ideal for frequent outages (Off-Grid)

Complete independence from grid

Affordable for homes

Range from 1000W to 11000W

Cannot export to government grid

Best for:

Homes

Villas

Small Shops

Huawei SUN2000 Series

Very high efficiency

Reduce electricity bill

10 years warranty (extendable)

Smart remote monitoring

Needs stable government electricity

Best for:

Commercial

Factories

Wells

Browse All Inverters

OPTI-Solar Handy Ultra

SP1000 SP1200 SP3000 SP5000 SP8000 SP11000

Huawei SUN2000 Series

SUN2000-20KTL SUN2000-30KTL SUN2000-50KTL SUN2000-100KTL

Frequently Asked Questions

Need Help Choosing?

Our technical team is ready to help you choose the best inverter for your needs. Contact us for a free consultation.

Chat on WhatsApp Contact Us

Last Updated: February 25, 2026