Changsha · Dhaka

Solar that starts on the roof and ends at the grid.

One accountable partner for solar and battery systems across Bangladesh, from a 3 kWp rooftop to a 50 MWp park. Inverters and packs built in Changsha, tested to IEC standards, commissioned by a Dhaka team that stays after the meter is installed.

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3 kWp – 50 MWp: System range, residential to utility
48 hours: Service response target in Bangladesh
25 years: Module performance warranty
6 years: BESS battery warranty, home to industrial
2 years: Inverter warranty

Rooftop array · Dhaka Solar panels across an industrial rooftop at sunrise in Bangladesh

System viewIllustrative

PV array1.24 MW

Inverter98.3%

Battery78%

Grid0.41 MW

Self-consumption68%

Today4.9 MWh

Export1.7 MWh

Uptime99.4%

SREDA listedNet-metering product list

BSTI / BDSModule & inverter standards

IEC 61215 · 61730Module design & safety

IEC 62109 · 61727Inverter safety & grid

IEC 62619 · 63056Battery cells & packs

BNBC 2020Wind load & structure

Exclusive distributor · Bangladesh SANY Silicon Energy

Wafers, cells and modules from SANY's silicon business, held exclusively for the Bangladesh market — a module line to sit alongside the inverters and packs we build ourselves.

Wafer → cell → moduleRooftop & utility modules

01 The market

A 20% target, and a tariff that finally rewards storage.

Bangladesh has committed to 20% renewable electricity by 2030. With land scarce, the capacity will come from roofs, and from systems that can hold their own output.

1,807MW

Renewable capacity installed nationwide — about 5.6% of 32,457 MW of installed generation, early 2026.

214MW

Net-metered rooftop solar already connected across 4,490 systems on the six distribution networks.

Tk 10.50/unit

Paid for surplus power from battery-backed rooftop systems installed before 28 February 2027.

What changed in 2025

Systems may now be sized to 100% of sanctioned load, single-phase connections qualify, and 90% of exported units are credited against the bill each quarter.

Solar resource, by division, month by month

Global horizontal irradiance in kWh/m²/day across all eight divisions. The monsoon dip is why storage, not more panels, decides the economics.

NASA POWER · division model

~1,470 MWSolar in the national base 214 MWRooftop net-metered · ~4,490 systems 8 of 8Divisions covered on the grid

Dhaka series anchored to NASA POWER; the other seven divisions are modelled from regional climate. Sources: SREDA; Net Metering Guidelines 2025; Power Division circular, Sept 2026; The Daily Star; Islam et al., Int. J. Photoenergy, 2025.

02 Why SolGrid

The roof, the meter and the battery — one team that never hands off.

Most Bangladesh solar companies are integrators buying someone else's hardware. We are the factory, the exclusive module distributor and the Dhaka desk — on one contract.

01 / 06

Built, not resold

Inverters, PCS and LFP packs are assembled on our own Changsha line and type-tested before they ship — no relabelled catalogue.

IEC 62109 · 62619 tested

02 / 06

Exclusive modules

As the exclusive Sany Silicon Energy distributor in Bangladesh, panels arrive wafer-to-meter on one supply chain.

Sany Silicon Energy · BD rights

03 / 06

Approval owners

A named person at every gate — site survey, SREDA listing, utility meter, commissioning — so nothing sits on a queue.

Seven gates, seven owners

04 / 06

48-hour response

Spare boards, inverters and packs held in Dhaka. A Saturday fault is a Saturday problem, not next month's.

On-site target · 48 hours

05 / 06

Stated assumptions

Every payback on this page is calculated from visible inputs — yield, tariff, battery cost — not rounded marketing numbers.

Calculator assumptions shown

06 / 06

One warranty chain

Panel, inverter and battery claims filed with one Dhaka desk, not passed through three distributors.

Single point of escalation

03 Solutions

Four scales of the same engineering.

Contemporary Dhaka residence with a rooftop solar array

Residential · Dhaka

01 / Home

A roof that pays the bill.

Sized to your sanctioned load and your evening usage. Single-phase and three-phase hybrid inverters, with a 5–15 kWh battery so the lights stay on through a feeder trip — and the surplus still earns a credit.

System size3 – 12 kWp

Modelled yield4,170 kWh / yr at 3 kWp

Roof area≈ 4.5 m² per kWp

Typical buildHybrid + 5–15 kWh LFP

Estimate my rooftop

04 Storage

Storage is no longer the optional line item.

A battery turns a solar array from a daytime discount into an asset that works at 8 pm. In Bangladesh it also unlocks the export tariff — and keeps the line alive when the feeder does not.

Power Division incentive · Sept 2026 Tk 10.50 per unit exported, held to 2030.

For battery-backed rooftop systems commissioned before 28 February 2027. Cost benchmark capped at Tk 8/unit, with a 20% margin and 11.25% premium added.

Backup that behaves like a generator

Sub-20 ms transfer on hybrid inverters, so compressors and servers ride through a trip instead of restarting.

Peak shaving on demand charge

Clip the evening peak at factories and cold stores. The array charges the pack at midday; the pack carries the expensive hours.

Shift the surplus into the tariff window

Store what the roof over-produces, then either use it after sunset or export it under the incentive rather than giving it away.

Containerised battery energy storage unit on a concrete yard at dawn

SG-B container · 500 kWh – 5 MWh

05 Products

Our own conversion chain, not a catalogue of other people's.

Inverters and battery packs are designed and assembled at our Changsha works, then type-tested against the standards the Bangladesh net-metering programme actually checks.

SolGrid hybrid inverter with brushed aluminium chassis and dark glass front panel

SG-H hybrid inverterSingle-phase · 3–12 kW

IP65

IEC 62109-1/-2IEC 61727IEC 61000BDS listedCE

SG-H · Hybrid inverter

3 – 12 kW

One box for array, battery and grid. Two MPPT trackers, integrated changeover, and a display you can read from the landing without a torch.

97.6% peak efficiency2 × MPPTIP65< 20 ms backup transfer

SG-T · Three-phase hybrid

10 – 50 kW

For commercial buildings with three-phase service and an evening load that outlasts the sun. Parallel-ready for staged expansion without replacing the first unit.

98.2% peak efficiency3 × MPPTUp to 6 in parallelGenerator input

SG-C · Commercial string

100 – 350 kW

1500 V DC architecture for factory roofs and ground mount. Ten MPPT channels, string-level monitoring, and a sealed cabinet rated for coastal humidity.

98.8% peak efficiency10 × MPPT1500 V DCC5 anti-corrosion

SG-B · Battery pack

5 – 30 kWh

Stackable LFP cabinets with an integrated BMS and pack-level fire suppression. Sized for a household evening, or a shop floor that cannot stop.

LFP chemistry≥ 6,000 cycles90% usable depthIP65

SG-BC · Containerised BESS

500 kWh – 5 MWh

Liquid-cooled 20-ft container with PCS, fire detection and HVAC in one footprint. Grid-forming capable, shipped from Changsha with the factory test report attached.

Liquid cooling1,500 V DCGrid-forming ready20-ft ISO footprint

Ranges are indicative. Final specification, efficiency figures and warranty terms are confirmed against the datasheet and the SREDA/BSTI listing for your project.

Module supply · exclusive

The array comes from SANY Silicon Energy.

We hold the exclusive distribution rights for SANY Silicon Energy modules in Bangladesh. Panels, inverters and batteries therefore leave the factory on one shipping document and arrive under one warranty desk.

Exclusive territoryBangladesh distribution rights held by SolGrid Energy for the SANY Silicon Energy module line.

Sized to our inputsString lengths, MPPT windows and clipping checked against SG-series inverters before the order is placed.

One escalation pathAn underperforming array is our claim to file with the manufacturer, not yours to chase.

06 Engineering

Seven steps, one accountable name on every drawing.

Approvals in Bangladesh are a paperwork business as much as an electrical one. We do both, and we tell you who is responsible at each gate.

Step 01

Site and load survey

Roof geometry, shading, slab condition, sanctioned load and a week of interval data where the meter provides it.
SolGrid Dhaka · field team
Step 02

Design and yield model

Array layout, single-line diagram, earthing scheme, structural check to BNBC 2020 wind exposure, and a modelled annual yield.
SolGrid Engineering · Dhaka + Changsha
Step 03

Net-metering approval

Application to the distribution utility, equipment from the approved product list, inspection and the bi-directional meter agreement.
SolGrid permits desk · utility & SREDA
Step 04

Supply and logistics

Factory acceptance at Changsha, sea freight to Chattogram or air to Dhaka, customs under the current duty-exempt solar HS codes.
SolGrid supply chain · Changsha
Step 05

Installation and commissioning

Mounting, DC and AC works, insulation and earth resistance tests, anti-islanding check, and a witnessed commissioning sheet.
SolGrid crews · QA sign-off
Step 06

Grid connection and tariff

Meter installation, utility inspection, contract signature, and enrolment for quarterly export settlement where storage is included.
Distribution utility · with SolGrid liaison
Step 07

Monitor and maintain

Remote monitoring from day one, scheduled cleaning and thermal checks, spares held in Dhaka, and an annual performance report you can hand to a lender.
SolGrid O&M desk · 48-hour response target

07 Quick estimate

What a roof is worth, before anyone visits.

Three numbers, one honest payback. Move the sliders; the model uses the same yield and tariff assumptions our proposals start from.

Simple payback

5.8years

Annual generation27,800 kWh

Annual bill offsetTk 281,000

Indicative investmentTk 1.66 M

Roof area required90 m²

Avoided CO₂17.2 t / yr

Assumes 1,390 kWh per kWp per year, Tk 10.40/unit retail tariff, 90% credit on export, BDT 65,000 per kWp plus BDT 18,000 per kWp for storage, and 0.62 kg CO₂ avoided per kWh. A proposal replaces these with your interval data.

08 Reference configurations

Three roofs, three honest models.

Not case studies — these are the configurations we design most often, with the numbers our modelling produces for them.

Residential

5 kWp · Dhaka home

Hybrid inverter, 10 kWh pack, single-phase net metering. Sized for a family of five with an evening air-conditioning load.

Generation6,950 kWh/yr

Battery10 kWh LFP

Payback≈ 6 yr

Aerial view of a garment factory with rooftop solar

Industrial

500 kWp · Gazipur factory

Two-shift RMG plant with a 250 kWh pack for demand-charge shaving. Installation phased across roof bays, no production stoppage.

Generation695 MWh/yr

Battery250 kWh

Payback≈ 5 yr

Utility

10 MWp · ground mount

Fixed-tilt array at 22° with central inverters, SCADA and a grid-forming battery option for evening dispatch.

Generation13.9 GWh/yr

Land≈ 12 ha

Payback6–7 yr

All yields and paybacks are modelled at 1,390 kWh/kWp/yr and Tk 10.40/unit. Treat them as a starting point for a site-specific study, not a quotation.

09 Company

Two addresses. One set of drawings.

SolGrid Energy builds solar and storage for Bangladesh from two ends: a factory and test bench in Changsha where the inverters and packs are made, and a delivery team in Dhaka that surveys the roof, clears the meter and answers the phone in August.

The module line is a partnership rather than a purchase: SolGrid Energy holds the exclusive distribution rights for SANY Silicon Energy in Bangladesh. That is why a project can be quoted from wafer to meter without renegotiating the supply chain at every stage.

Because the hardware is ours, a warranty claim does not travel through three distributors. Because the crew is local, a fault on a Saturday is a Saturday problem, not next month's.

Changsha

Manufacturing & test

Inverter, PCS and pack assembly lines
IEC 62109 / 62619 type-test bench
Factory acceptance before every shipment
Grid-code and firmware engineering

Dhaka

Delivery & service

Load, roof and structural surveys
Net-metering and utility approvals
Installation crews and commissioning
Spares, monitoring and O&M desk

Inverter assembly line at the Changsha works

Changsha works · assembly line

“One team signs the drawing, clears the meter and climbs the roof.”

Engineer inspecting a combiner box on a rooftop during commissioning

10 After handover

The warranty is only as good as who answers.

Every system ships with a monitoring account, an as-built drawing set and a named contact at the Dhaka desk. When something drifts, you should not have to explain your own site to us.

Response48-hour on-site target nationwide; remote diagnosis first

MonitoringString-level telemetry from day one, alerts to your phone

SparesInverters, boards and modules held in Dhaka

Warranties25 yr modules, 2 yr inverters, 6 yr BESS battery packs

HandoverTest sheets, SLD, earthing record, O&M manual

ReportingAnnual performance report for lenders and boards

11 Start

Send us a roof. We will send back a drawing.

A survey request needs four things: where the site is, what the meter says, what the roof is made of, and what you want the system to do. Everything else we can measure.

Email[email protected]

Phones+880 1886 412191 +880 1988 487 919 · +86 186 0083 4304 · +49 171 333 5058

China officeChangsha, Hunan, China · GMT+8

Bangladesh office8/Ka, Ring Road, Shyamoli, Dhaka · GMT+6

HoursMon – Fri, 09:00 – 18:00 HKT

CertificateNo. C-211666

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Project brief

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