Frequently asked questions

Jakinsab International Limited is a Nigerian engineering and renewable energy solutions company specialising in solar power systems, electrical engineering installations, telecom power infrastructure, and engineering project management.

We provide reliable, efficient, and cost-effective engineering solutions tailored to residential, commercial, and industrial needs. Our goal is to help individuals and organisations improve power reliability, operational efficiency, and long-term cost performance.

Our core services include:

• Solar energy solutions: solar PV system design, installation, commissioning, and maintenance.
• Inverter and battery storage solutions: hybrid inverter systems, battery storage, and backup power installations.
• Electrical engineering services: design, installation, upgrades, testing, and maintenance.
• Telecom power solutions: installation, integration, and maintenance of telecommunications power infrastructure.
• Energy audits and consultancy: load analysis, energy assessments, and efficiency recommendations.
• Engineering project management: project planning, procurement coordination, execution supervision, quality assurance, and delivery oversight.

We are based in Lagos, Nigeria, and provide engineering and renewable energy solutions in Lagos and other locations across Nigeria, subject to project requirements and service availability. Contact us to discuss your project location.

Our approach combines engineering expertise with practical project delivery. We focus on:

• Solutions designed around actual customer energy and technical requirements.
• Quality equipment selected for safety, reliability, and performance.
• Cost-effective system designs that balance investment and functionality.
• Structured execution, transparent communication, and attention to quality.
• Long-term customer relationships and appropriate technical support.

We don’t just install equipment; we engineer solutions to address your power and infrastructure challenges.

Solar photovoltaic (PV) panels convert sunlight into direct-current (DC) electricity. An inverter converts DC electricity into alternating current (AC) for most household and commercial appliances. Depending on the design, electricity may be used immediately, stored in batteries, or used alongside grid or generator supply.

A typical system may include solar panels, an inverter, battery storage, a charge controller where required, and protective devices such as breakers, fuses, surge protection, and earthing components.

Yes. A properly designed solar system can power an entire home or business if its solar generation, inverter capacity, and battery storage (where required) are adequate for the connected loads.

The appropriate design depends on your appliances, daily energy use, peak demand, available installation space, and desired backup duration. We assess these factors before recommending a configuration.

The required system capacity depends on the appliances you intend to power, their ratings, how long they operate each day, your total daily energy consumption, peak demand, and backup expectations.

You can use the Jakinsab Solar Calculator for an initial estimate. We recommend a detailed load assessment before final equipment selection and pricing.

Yes. Solar systems can power air conditioners, refrigerators, water pumps, washing machines, and other high- consumption appliances when they are sized appropriately.

Starting currents, simultaneous appliance operation, and daily energy use must be considered. These factors can increase required inverter, solar PV, and battery capacity.

Yes. Solar panels continue generating electricity under cloudy conditions, but output is generally lower than in strong sunlight. Battery storage can provide additional energy when solar production is low.

Hybrid systems may also draw on the grid or a generator, depending on their configuration.

Yes, provided the system includes enough usable battery storage to support the night-time loads. Backup duration depends on battery capacity and how much power the connected appliances consume.

For example, a system serving lighting, fans, and a refrigerator will generally last longer than the same system serving multiple air conditioners.

An inverter converts DC power from batteries or another DC source into AC power. A conventional inverter backup system may charge its batteries from the grid or a generator.

A solar power system includes PV panels that generate electricity from sunlight. A solar hybrid system combines solar panels, an inverter, and battery storage, with optional integration of grid and generator sources.

• Off-grid: operates independently of the utility grid; commonly uses batteries and may include generator backup.
• On-grid: operates alongside the utility grid; conventional grid-tied inverters generally stop supplying power during an outage unless they have an approved backup operating mode.
• Hybrid: combines solar PV with battery storage and can integrate the grid or a generator, depending on the design.

We recommend a system type based on your reliability needs, operating profile, and budget.

Actual lifespans depend on product quality, usage, installation conditions, climate, and maintenance. General industry estimates are:

These are indicative ranges, not guarantees. Product data sheets and manufacturers’ warranty terms take precedence.

A properly designed solar installation can reduce electricity purchased from the grid and lower generator fuel consumption. Savings depend on your electricity tariff, load profile, solar generation, battery use, and system costs.

We can assess your electricity use and provide a preliminary cost-benefit analysis to support your investment decision.

Installation costs depend on system capacity, component selection, battery storage, site conditions, installation complexity, and project location.

Jakinsab provides tailored quotations rather than a standard price for every customer. Use our Solar Calculator for a preliminary estimate and contact our team for a detailed quotation.

Yes. We provide electrical engineering services for residential, commercial, and industrial applications, including installation design, power distribution, wiring, panel installations, upgrades, testing, and maintenance, as agreed for each project. We carry out network expansion projects across different utility/Discos in Nigeria.

We prioritise electrical safety, equipment reliability, and applicable engineering standards.

Yes. We can assess existing installations and recommend suitable upgrades or expansions. These may include additional PV panels, increased battery capacity, inverter replacement, electrical distribution improvements, generator integration, and correction of identified installation deficiencies.

Before making recommendations, we evaluate equipment condition, safety, and technical compatibility.

Yes. Telecom power engineering is one of our service areas. We support the design, installation, integration, and maintenance of power systems for telecommunications facilities.

Depending on the requirements, this may include DC power systems, rectifiers, battery backup, solar hybrid power systems, and associated electrical infrastructure.

Yes. Our assessments help customers understand electricity consumption and identify practical energy- efficiency opportunities.

Activities may include reviewing utility bills, evaluating connected loads, identifying major energy users, examining operating patterns, and recommending optimisation measures. The findings can also support accurate sizing of solar systems.

Yes. Jakinsab provides professional engineering project management services to help individuals, businesses, and organisations plan, execute, monitor, and deliver engineering and infrastructure projects.

Our approach emphasises effective planning, cost control, quality assurance, risk management, stakeholder coordination, and timely project delivery.

We support a range of engineering and infrastructure projects, including:

• Renewable energy projects: solar PV, battery energy storage, and hybrid power installations.
• Electrical infrastructure projects: power distribution installations and electrical system upgrades.
• Telecommunications projects: power infrastructure deployment, upgrades, and maintenance programmes.
• Commercial and industrial power projects: installation and integration of electrical power systems.
• Engineering procurement and installation projects: equipment specification, procurement coordination, installation oversight, and commissioning.
• Energy-efficiency projects: energy audits, optimisation initiatives, and power infrastructure improvements.

We tailor our involvement to the complexity, scale, and requirements of each project.

Our project management services can span the complete project lifecycle, depending on the engagement:

1. Initiation: feasibility reviews, objectives, scope definition, stakeholder identification, and preliminary budgets.
2. Planning: execution plans, work breakdown structures, schedules, resources, budgets, and risk mitigation plans.
3. Execution: procurement and contractor coordination, technical supervision, communication, quality assurance, and safety oversight.
4. Monitoring and control: progress reporting, schedule and cost variance analysis, change management, risk reviews, and contractor performance.
5. Closure: testing and commissioning coordination, documentation, handover, performance review, and lessons learned.

The final scope, deliverables, and decision-making authority are agreed with each client.

Yes. We can coordinate projects involving equipment manufacturers, contractors, consultants, and other stakeholders. Our role may include defining interfaces, coordinating work packages, managing dependencies, tracking deliverables, reviewing performance, and facilitating timely decisions.

This structured oversight helps reduce communication gaps, delays, and avoidable rework.

Yes, subject to an agreed scope of engagement. We can provide independent project management services to represent a client’s interests throughout project execution.

This may include design reviews, evaluation of contractor deliverables, milestone tracking, quality inspections, review of progress reports, and handover coordination. The aim is to maintain effective oversight against agreed scope, technical standards, budget, schedule, and quality expectations.

We use structured planning, realistic schedules, measurable milestones, cost monitoring, risk registers, change control, and regular reporting to manage project performance.

No delivery date or budget can be guaranteed against every external risk, but early identification of issues and proactive management reduce the likelihood and impact of delays and overruns.

Submit an enquiry through our website or official communication channels. Please provide the project type, location, objectives, estimated budget, anticipated timeline, and areas where management support is required.

We will review the requirements and discuss an appropriate engagement structure, scope of work, and deliverables.

The timeline depends on project size, equipment availability, site access, and technical complexity. A small residential installation may take a few days after the site and materials are ready, while commercial or industrial projects may require weeks or months.

We provide an estimated delivery schedule during project planning.

Yes. We recognise the importance of regular maintenance and timely support in protecting system reliability and performance.

Depending on the equipment and agreed service package, support may include preventive maintenance, fault diagnosis, performance checks, equipment servicing, and corrective work.

Solar panels generally require limited maintenance, but periodic inspection and appropriate cleaning help protect their performance.

• Inspect for dirt, debris, shading, or physical damage.
• Check mounting structures and visible electrical connections.
• Review inverter and battery performance.
• Inspect protective devices and earthing arrangements.
• Review monitoring data where available.

Electrical inspections and work at height are carried out by appropriately trained personnel.

Warranty coverage depends on the manufacturer, equipment model, and installation contract. Solar panels, inverters, and batteries may have different warranty periods and conditions.

Applicable manufacturer warranties and any workmanship warranty will be stated in the project documentation. Customers should review these terms before approval.

Check the inverter display or monitoring application for error messages and note the fault indication and when it occurred.

Do not open the equipment or attempt electrical repairs unless you are appropriately qualified. Contact our technical support team with the system details and any displayed fault code for advice on the next steps.

Reach us through our website, email, WhatsApp, or other official company communication channels. Share the project location, type of solution, appliance list or electricity consumption, and preferred delivery timeframe.

Our team will review the request and advise what information or assessment is needed to prepare a quotation.

Where needed, we recommend a site assessment to verify technical requirements. Depending on the installation, this may include roof condition, available space, electrical infrastructure, cable routes, load requirements, and safety considerations.

We will communicate the assessment scope and any applicable charges before the visit.

Customers interested in solar panels, inverters, batteries, or related equipment can contact us to discuss procurement options and availability.

We can also provide technical guidance on product selection and compatibility for the intended application.

Payment terms depend on the project scope and contract. For installation and engineering engagements, payment milestones and arrangements are specified in the approved quotation or agreement.

Customers should pay only through company-approved channels and retain the relevant documentation.

Yes. Our services are applicable to residential, commercial, and industrial engineering projects.

For larger engagements, we can support assessment, design, procurement coordination, installation planning, project execution, project management, and commissioning within the agreed scope.

You can contact us to discuss solar installations, electrical engineering, telecom power systems, energy audits, and engineering project management requirements.

Visit www.jakinsab.com.ng and use the Contact page or the company’s published official communication channels.