Complete Smart Energy Solutions for Bangladesh
We design, supply and install complete energy solutions for homes, factories, farms and commercial buildings — from solar PV and battery energy storage to EV charging infrastructure, protection systems and voltage stabilization.
- Delivering solutions
- 15 years
- Peak module efficiency
- 24.1%
- Performance warranty
- 30 years
Certifications
- SREDA Approved
- BSTI Certified
- IEC 61215
- IEC 61730
- UL 61730
- ISO 9001
- ISO 14001
- TÜV Rheinland
- Tier-1 BNEF
Government incentive 2026
Install rooftop solar with battery storage and earn Tk 10.50 per unit for surplus electricity sent to the grid.
- Tk 10.50 / unit
- Grid-feed tariff for surplus electricity under the new incentive package.
- 28 Feb 2027
- Installation deadline — install within this period to qualify.
- 3 years
- Incentive available until 28 Feb 2030 for eligible installations.
- 180-day tax relief
- Most duties and taxes waived on imported solar machinery and spare parts.
Who we are
OSLEOS provides complete solar and energy solutions for homes, businesses, industries, institutions and agriculture. We believe solar should be more than an equipment purchase. Every system we deliver is engineered around your electricity use, operating hours and financial goals.
To help Bangladesh move toward cleaner, smarter and more efficient energy by making renewable energy practical, measurable and financially meaningful.
- Designed for you
- No standard packages. Each system is sized to your real load and your roof.
- The whole system
- Panels, inverters, batteries, protection and voltage stabilizers from one source.
- Clear economics
- Generation, savings and payback estimated before you invest.
- Long-term support
- Monitoring, maintenance and after-sales service long after handover.
15
Years delivering solar solutions
Product range
The complete PV system, from Tier-1 panels and inverters to storage, protection, stabilizers and mounting, sourced from the brands we trust.
Solar Panels
Tier-1 N-type modules, 430–630 W
Inverters
Hybrid, off-grid & on-grid, 5–110 kW
Energy Storage
Lead-acid, LiFePO₄ & C&I battery systems
Charge Controllers
PWM, MPPT & smart controllers
Voltage Stabilizers
Steady voltage for homes, farms & factories
Protection & Accessories
Breakers, SPDs, isolators, cables
Mounting Structures
Rooftop, ground & elevated
Commercial & Utility
Complete PV systems & energy solutions
AI Integrated Solar Solutions
Solar noise barriers, colored PV glass, robotic cleaning, trackers and more
Solar Combo Package
Ready-made panel, inverter and battery bundles for homes
Partner products
Genuine models from our partner brands. Tell us what you need and an engineer sends a quote sized to your site.
- Genuine partner products
- Nationwide installation
- Engineer consultation
Brand film
Homes, shops, offices and factories across Bangladesh lose hours to outages and rising bills. Watch how a complete OSLEOS solar system changes that.
- Homes, shops, offices and factories
- Complete system: panels, inverters, batteries and stabilizers
- 15 years delivering solutions
Solutions
On-grid, off-grid or hybrid. Each OSLEOS system is engineered around your load, your site and your budget.
Which system is right for you?
01
On-grid
Solar powers the building first and the grid covers the rest. Eligible surplus can be exported under net metering.
Solar panelsGrid-tied inverterBuildingMeterUtility grid
- Ideal for
- Homes, offices and businesses with a reliable grid connection.
- Works during outages
- No
02
Off-grid
Works independently of the grid. Solar charges a battery bank that supplies power at night and in low sun.
Solar panelsCharge controllerBatteryOff-grid inverterLoads
- Ideal for
- Remote sites and places that need an independent power supply.
- Works during outages
- Yes
03
Hybrid
Combines solar, battery storage and the grid through a hybrid inverter, keeping selected loads running during load-shedding.
Solar + grid + batteryHybrid inverterLoads
- Ideal for
- Homes and businesses that want solar savings and battery backup.
- Works during outages
- Yes
Homes & buildings
Rooftop systems for homes, apartments, offices, clinics and schools that cut bills and ride through load-shedding.
- On-grid, hybrid and backup systems
- Net metering under the 2025 guideline
- Voltage stabilizers for sensitive loads
Commercial & industrial
Factories, warehouses, cold storage and commercial buildings. We turn unused roofs into energy assets.
- Bill analysis and payback study
- Solar + grid + battery + generator
- Hybrid factory power and cold storage
Agriculture & utility
Ground-mounted arrays, solar irrigation and water pumping that replace diesel on open land and remote sites.
- Solar irrigation and pumping
- Ground and elevated structures
- Operation and maintenance
15 years
Delivering solar solutions
24.1%
Peak module efficiency
1,200+
Projects delivered
64
Districts served
Projects
Factory roofs, cold storage, farms and city rooftops. The kinds of systems OSLEOS designs, supplies and commissions.
Industrial · On-grid
Expo Accessories, Gazipur
A 501 kWp on-grid solar installation at Expo Accessories in Gazipur.
- Capacity
- 501 kWp
- Location
- Gazipur
Industrial · On-grid
Madipac, United Group
A 40 kW ground-mounted on-grid solar system at Madipac, United Group.
- Capacity
- 40 kW
- Location
- Madipac, United Group, 100 Ft
Industrial · On-grid
Tallon Zipper, Dhamrai
A 20 kW on-grid rooftop system on a metal roof at Tallon Zipper, Dhamrai.
- Capacity
- 20 kW
- Location
- Dhamrai, Dhaka
Process
A clear, structured process from the first conversation to handover and beyond.
01
Customer requirement
We understand your electricity use, objectives and energy needs to define the right solution.
02
Site assessment
We review your roof or land, electrical connection, sunlight exposure and installation conditions.
03
System design
We determine solar capacity, inverter configuration, battery needs and protection design.
04
Equipment selection
We select the right panels, inverters, batteries, structures and accessories for your system.
05
Installation & testing
Professional wiring, protection, testing and commissioning for safe and efficient operation.
06
Handover & support
We hand over the system, guide your team and stay on for monitoring and maintenance.
Reviews
Sample review
Our monthly bill dropped by more than half, and during load-shedding the house doesn't even notice. The team explained every part of the system, down to the stabilizer.
We compared four suppliers. OSLEOS was the only one that studied our bills and roof properly and showed us the payback before we invested. The plant is running ahead of projection.
Our injection moulding machines are very sensitive to voltage drops. OSLEOS added solar with three-phase stabilizers, and we have had far fewer stoppages and rejected batches since.
Buyers ask us about renewable energy in every audit. The rooftop plant OSLEOS built now covers a large share of our daytime load, and the monitoring reports make compliance simple.
They surveyed the roof, checked the structure and finished the installation without stopping a single sewing line. Our diesel use for the generator has come down noticeably.
Clear proposal, honest numbers and a clean installation. When one inverter showed a fault, their engineer was on site the next morning and handled the warranty claim for us.
Our blow moulding line runs two shifts. OSLEOS sized a hybrid system around our real load profile, not a guess, and the savings match what they showed us on paper.
Our diagnostic machines used to stop with every outage. OSLEOS designed a solar and battery backup system for the clinic, and we haven't lost a working hour since.
Our manufacturing partners in China
OSLEOS follows our installation manuals to the letter: string design, mounting and grounding. Their commissioning reports are complete, so warranty registration for their projects is straightforward.
The OSLEOS engineering team understands hybrid inverter configuration very well. Their technical questions are precise, and the systems they commission rarely need remote support from us.
A reliable partner in Bangladesh. OSLEOS selects the right stabilizer and protection ratings for each site, which protects our equipment and their customers.
Partners
Every business has unique energy needs. We select dependable components from the world's leading manufacturers and build systems for performance, savings and long-term reliability.
PV module partners
Inverter partners
Voltage stabilizer partners
- SAKO
- CNC Electric
- Tengen
Brands we use
Protection, switchgear and balance-of-system
- Delixi Electric
- CHINT
- CNC Electric
- Tengen
- Zhengxi
Brochure
Leave your email and phone number and our team will send you the full brochure with datasheets.
Contact
Tell us about your project and an engineer will reply within one working day.
- +880 1711-752202
- Email us
- [email protected]
- Head office
- Tanjima Villa, 31/1, Lift-2, Flat-C2 (2nd Floor), East Hazipara, Rampura, Dhaka-1219, BangladeshGet directions
- Office hours
- Sat – Thu, 10:00 – 21:00