Md. Mahadi Hasan, electrical engineer (BUET)
Keeping the load up when the grid goes down.
Eight years across power engineering, B2B sales and trade with China. I have designed substations and rooftop solar, led an elevator and power business, signed BDT 5.06 crore in contracts, and now sell LFP battery storage to factories in Bangladesh, where load-shedding is part of every working day.
A day on a weak grid
A Narayanganj factory with 60 kWp of rooftop PV, a 150 kWh LFP battery and a diesel set, on a feeder with three load-shedding windows. Drag through the day or press play and watch which source carries the load.
- Switches between modes
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- Hours on battery, islanded
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- Diesel energy
- 0 kWh
- PV energy used
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An illustrative energy model in 5-minute steps, not site data. Battery limits: 20–90% SOC and 100 kW. Whenever the grid is on, it recharges the battery at up to 25 kW.
Why the battery has to form the grid
On a weak grid, losing one generator sends frequency falling fast. Slow governors respond in seconds; a grid-forming battery responds in milliseconds with virtual inertia and droop. Trip 15% of generation and tune the battery yourself.
- Nadir without storage
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- Nadir with grid-forming storage
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- Initial RoCoF, with storage
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Single-bus model: 2(H + Hv)·dΔf/dt = Pgov + Pbat − ΔPload − D·Δf, load damping D = 4, governor droop 5% with a 5 s lag, battery response 50 ms capped at 0.2 pu. Illustrative, per-unit values.
Where I work now
Deputy Manager, Corporate Sales at HiTHIUM Energy Storage Technology BD Ltd, the Bangladesh arm of Xiamen HiTHIUM Energy Storage Technology Co., Ltd, an LFP cell and storage-system maker with over 70 GWh of capacity.
My territory is the Narayanganj industrial belt: garment and manufacturing plants on feeders where load-shedding is routine and diesel is the default backup. I match storage to each site's load profile, rooftop PV and backup duty.
The work runs from the technical side, load profiles, outage patterns and backup duty, to the commercial side: tariffs, diesel costs and the business case a plant owner signs off on.
- 0 crore BDT
- signed at Atlas Group in 15 months
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- contracts across 12 locations
- 0%
- win rate on qualified opportunities
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- members in the BUET engineers' network I founded
Deals signed, teams trained
Moments from the work behind the numbers: agreements signed with clients, and training sessions run for sales and service teams. Click any photo to see it in full.
Sales agreements
Training and team work
The path here
Eight years of continuous work, from teaching physics to selling grid storage.
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Sept 2026 – now
HiTHIUM Energy Storage Technology BD Ltd
Deputy Manager, Corporate Sales
LFP battery storage for industrial, commercial and utility customers. Appointed at Deputy Manager level against an advertised Senior Executive post.
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May 2025 – Aug 2026
Atlas Group: Atlas Elevator Limited and Atlas Power
Business Development Manager
Led the commercial function of a 35-person engineering company: BDT 5.06 crore across 25 contracts and 26 units, and the company's first structured CRM and sales reporting. Founded and led Atlas Power, the group's power arm, designing and supplying substations, standby generators and rooftop PV within residential and commercial MEP designs. Negotiated a national sole agency with Zhejiang Aoma Elevator Co., Ltd, replacing four competing importers with one appointed distributor.
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Nov 2024 – May 2025
XOLAREN Bangladesh
Business Development Engineer
Industrial electrical and EPC work for 110+ factories: load analysis, single-line diagrams, RSC compliance design and feasibility reviews. Built automated client workflows with GPT, Zapier and n8n.
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2018 – 2024
Udvash Academic & Admission Care
Physics Lecturer and Content Team Lead
1,900+ live sessions to more than 10,000 students, part-time through my B.Sc. Led a 12-person team through nine published titles.
Engineering on the ground
Design work delivered through Atlas Power as a Certified Electrical Supervisor, Class A/B/C. Click a project for the detail.
60.14 kWp grid-tied rooftop PVMymensingh
97 N-type bifacial 620 Wp modules on a 60 kW three-phase grid-tie inverter, with a utility-approved net meter. String layout, DC and AC cabling, combiner and protection, mounting structure, and a full technical and commercial proposal.
500 kVA substation for a 27-flat buildingDhaka
The transformer was sized three independent ways: first-principles demand, the utility's (DESCO) policy method, and sanctioned-load capability. All three converged on 500 kVA. The report specifies a 300 kVAR power-factor-correction plant and documents the worst case: full sanctioned load at uncorrected power factor would need 630 kVA.
Standby generator with step-load analysisDhaka
A backup-load model per flat and for common services: 129.8 kW, 180 kVA required. 200 kVA and 250 kVA options compared at 81% and 65% step load, with staged transfer, a 400 A four-pole ATS, and power-factor-correction interlocking during generator operation.
B.Sc. thesis: regional grid optimisationBUET
Optimizing Regional Power Grids and Cross-Border Energy Trading. A multi-country interconnected grid modelled in GAMS and MATLAB: generation–demand optimisation, cost analysis, an emission-reduction study, and proposed new interconnections and renewable integration strategies. Thesis grade 4.00/4.00.
Inside Chinese power manufacturing
I have walked factory floors and met engineering teams in five Chinese cities. The factories made battery storage systems, PV and storage inverters, EV chargers, electric three-wheelers and elevators. I also work with Chinese manufacturers' export and technical teams every day, and attended the Canton Fair.
Education
B.Sc. in Electrical and Electronic Engineering
Bangladesh University of Engineering and Technology (BUET), 2018–2023
CGPA 3.31/4.00 · Thesis 4.00/4.00
HSC 2017 and SSC 2015, Science, GPA 5.00/5.00 in both. Physics 179 and Higher Mathematics 197 out of 200 at HSC.
Certified Electrical Supervisor, Class A, B and C, Bangladesh Electricity Licensing Board.
Skills
- Power engineering Load analysis, single-line diagrams, substation and standby generator sizing, rooftop PV design, MEP electrical coordination
- Sales and business B2B and industrial sales, tenders and quotations, distributor agreements, CRM and sales reporting
- Trade Sourcing and import from Chinese manufacturers, factory visits, the Canton Fair
- Analysis and tools MATLAB, GAMS, process automation with GPT, Zapier and n8n
- Teaching and training 1,900+ live physics sessions, sales and service team training
Get in touch
Email, call or message me on LinkedIn.