Off-Grid Power Solution for a Senegal Household: Load Analysis and Recommended Configuration

Off-Grid Power Solution for a Senegal Household: Load Analysis and Recommended Configuration

This proposal responds to a specific customer requirement from Senegal covering lighting, entertainment, cooling, a large freezer, a kettle and a well pump. It first breaks the requirement down into a load estimate, then maps it to real DRIVELONG products, and finally lists what we still need from you to finalise the configuration.

1. Your Requirement, Item by Item

We have kept your original list exactly as received, in French, and translated each item for the analysis below.

Original requirement (FR)	Item	Qty
10 ampoules de 12W	12W LED bulbs	10
2 televisieurs ecran plat de 40"	40-inch flat-screen TVs	2
4 ventilateurs	Fans	4
un frigo	Refrigerator	1
un congelateur de 6000L	6000 L freezer	1
une bouilloire electrique	Electric kettle	1
une pompe a eau pour le puit	Well water pump	1

2. Load Analysis: How Much Power This Actually Needs

Two numbers decide the whole system: daily energy (watt-hours per day, Wh/day) and peak power (the highest instantaneous draw, in watts). Daily energy sizes the battery; peak power sizes the inverter.

The table below is an estimate based on typical consumption ranges for each appliance class. Only the 12W bulb rating and the 40-inch TV size come from your own list; the running watts and daily hours are planning assumptions, not measured values. They are shown so you can correct them with your real usage. Because the freezer and pump are the two largest and least certain loads, they are given as ranges rather than single figures.

Item	Qty	Assumed running power	Assumed hours/day	Estimated Wh/day
12W LED bulbs	10	12 W each	6	720
40-inch flat-screen TVs	2	80 W each	5	800
Fans	4	60 W each	8	1,920
Refrigerator	1	150 W (duty-cycled)	10	1,500
6000 L freezer	1	800–1,500 W (assumption, commercial-class range)	12	9,600–18,000
Electric kettle	1	1,500 W	0.3	450
Well water pump	1	750–1,500 W (assumption)	1.5	1,125–2,250
Estimated total (low–high)				≈ 16,100–25,600 Wh/day
With a 30% safety margin				≈ 21,000–33,300 Wh/day

Peak power. Two different figures matter here, and they are not the same thing:

• Continuous simultaneous draw: if every appliance were running at the same moment, the sum of the running powers above would be roughly 3,300–4,800 W. In practice the refrigerator and freezer cycle on and off, so the sustained draw is usually lower.
• Momentary peak: when a compressor or pump starts, its inrush current can be several times its running power. This momentary peak — not the daily average and not the continuous sum — is what the inverter must be able to ride through.

This is why the inverter is sized on peak, not on the daily average.

3. Recommended Configurations

All configurations below use real DRIVELONG products from our published range. They are sized to the estimate above; final sizing depends on the confirmed load data in Section 5.

Option A — Single high-power station (recommended starting point)

EP6000iLS High-Power Mobile Power Station — 6000 VA rated / 12000 VA peak, 5376 Wh LiFePO4 battery, expandable to 172 kWh with up to 31 extra batteries, 90% charge in one hour, supports utility, solar and ATS generator charging.

• 6000 VA continuous output covers the household load comfortably; 12000 VA peak gives headroom for motor start-up.
• 5376 Wh covers part of the estimated daily energy, so it is best paired with solar or grid charging during the day.
• Stackable expansion lets you add capacity later without replacing the main unit.

Option B — Larger capacity for full-day autonomy

EP12000iL Flagship High-Power Mobile Power Station — 12000 VA rated / 24000 VA peak, 7680 Wh LiFePO4 battery, expandable to 372 kWh, 24 kW parallel output, fully charged in 70 minutes.

• Highest continuous and peak output in the range — the safest choice if the freezer and pump must run together with the rest of the load.
• 7680 Wh base capacity plus stackable expansion can be sized to cover a full day of the estimated consumption.
• Best suited where the freezer is a commercial unit and reliability is critical.

Option C — Compact station for the essential loads

BP3600 Portable Power Station — 3600 W rated / 7200 W peak, 3430 Wh LiFePO4, built-in 2400 W MPPT, built-in ATS for hybrid systems, UPS function with <10 ms transfer.

• A good fit if the freezer and pump are powered separately, or if you want to start with lighting, TVs, fans and the refrigerator only.
• Built-in MPPT makes it straightforward to add solar panels.
• Smaller capacity than Options A and B; capacity can be expanded with additional batteries.

Solar charging

To reduce dependence on the grid, any of the above can be charged from DRIVELONG solar panels. Our published range includes foldable panels from 30 W to 600 W (DSF series) and flexible panels from 100 W to 300 W (DS series). The right array size depends on your daily energy target and local sun hours in Senegal, which we can calculate once the load is confirmed.

4. Why This Configuration

• Peak-first sizing. The freezer, refrigerator and pump are motor loads. Sizing on peak power rather than average avoids nuisance shutdowns when a compressor or pump starts.
• LiFePO4 chemistry. All three recommended units use LiFePO4 cells. The BP3600 battery is rated for 5000 cycles to 80% capacity, and the BP1000 in the same range is rated for 8000 cycles; cycle life for a specific model is stated in its product specification.
• Expandable, not disposable. Stackable battery expansion means the system can grow with your needs instead of being replaced.
• Multiple charging paths. Utility, solar and ATS generator charging give you options in a market where grid supply can be intermittent.
• Specifications from published product records. The product specifications quoted above (rated and peak power, battery capacity, expansion limits, charging methods) come from the published product records on our site. The load figures in Section 2 are planning assumptions and are labelled as such.

5. What We Need From You to Finalise the Configuration

To turn this estimate into a firm configuration, please confirm the following. These are the items we cannot responsibly assume:

• 6000 L freezer: nameplate rated power (W) and whether it is a chest or upright unit; the compressor start-up current if available.
• Well pump: rated power (W), whether it is a surface or submersible pump, well depth, and start-up current.
• Refrigerator: rated power and type.
• Kettle: rated power (typical units are 1,500–2,000 W).
• Daily usage hours for each appliance, and whether any loads must run simultaneously.
• Charging source: grid availability, planned solar array size, or both.
• Autonomy target: how many hours or days the system should run without recharging.
• Voltage and frequency at the installation site.

6. Sourcing and Delivery

DRIVELONG is a manufacturer based in Suzhou, China, with in-house R&D and OEM/ODM capability. The three models recommended above — EP6000iLS, EP12000iL and BP3600 — are each listed with CE, RoHS and UN 38.3 certification and a 5-year warranty in their published product records. We supply distributors and project buyers across Europe, North America, South America, Australia, Singapore, Russia and the Middle East.

Specific commercial terms — pricing, minimum order quantity, lead time and shipping to Senegal — depend on the final configuration and volume. We will confirm these in writing once the load data above is settled.

7. Next Step

Send us the nameplate data for the freezer, pump and refrigerator, and we will return a firm configuration with the matching battery capacity, solar array size and a quotation.

Product specifications in this document are taken from DRIVELONG's published product records. Load figures marked as assumptions are planning estimates and must be confirmed against your actual appliance nameplates before a final configuration is issued.