How to Choose the Right Solar System for Your Home or Business in Fiji

Choosing the right solar system for your home or business in Fiji starts with understanding how you use electricity and what you want the system to achieve.

A household seeking lower daytime electricity costs has different requirements from a remote property without grid access. A business needing backup for selected equipment also requires a different assessment from one focused mainly on reducing electricity purchases.

Panel quantity and advertised package prices provide only part of the picture. Electricity demand, site conditions, battery requirements and ongoing support all influence a suitable design.

For customers approaching More Grow Group Fiji, preparing this information helps create a clearer discussion about feasible solar options.

Explain the problem you want solar to address before selecting equipment.

A system designed to offset daytime consumption may not meet expectations for overnight operation or outage backup.

Common Objectives Include

• Reducing electricity purchased during daylight hours.
  • Supplying a property without grid access.
  • Supporting selected loads during outages.
  • Reducing generator operating hours.
  • Accommodating planned increases in electricity use.
  • Expanding an existing solar installation.

Rank your priorities. If both savings and backup matter, ask the provider to explain how each requirement affects the design and cost.

Provide electricity bills covering representative periods, ideally including seasonal changes.

Check energy consumption in kilowatt-hours rather than relying only on the amount paid. Bills may contain charges that solar generation will not eliminate.

The timing of consumption is equally important.

Information to Gather

• Monthly electricity consumption.
  • Available interval meter data.
  • Normal operating hours.
  • Weekday and weekend differences.
  • Major electrical appliances or machines.
  • Seasonal demand changes.
  • Existing generator use.
  • Planned additional equipment.

An office operating mainly during daylight hours may use a larger share of solar generation directly than a household with most demand after sunset.

Solar proposals often use similar-looking units that describe different things.

Kilowatts Describe Power

Kilowatts, written as kW, describe the rate at which electricity is generated or consumed.

Panel arrays and inverters have power ratings, but their ratings do not represent guaranteed continuous output.

Kilowatt-Hours Describe Energy

Kilowatt-hours, written as kWh, describe energy generated, consumed or stored over time.

Hypothetical Example:

• An appliance drawing 1 kW continuously for three hours uses 3 kWh.
  • A solar array rated at 5 kW does not produce 5 kW throughout the day.
  • A battery rated in kWh also has separate limits on how much power it can deliver.

Ask suppliers to distinguish panel capacity, inverter power, expected energy generation and usable battery capacity.

Different system arrangements suit different objectives.

These labels do not fully define a proposal.

Questions to Confirm

• Is a battery included?
  • Can the system operate during a grid outage?
  • Which circuits receive backup?
  • What happens when the battery reaches its reserve limit?
  • Is generator integration included?
  • Is export permitted under the proposed connection arrangement?

Ask for a written explanation of normal operation and outage behaviour.

If backup is required, identify the equipment that must continue operating.

Backing up selected lighting, communications and refrigeration differs substantially from supporting an entire building.

Backup Details to Provide

• Equipment descriptions and quantities.
  • Normal operating power.
  • Starting or surge requirements.
  • Expected operating hours.
  • Desired backup duration.
  • Loads that can be switched off.
  • Acceptable interruption during changeover.

Equipment power and energy requirements must both be assessed.

For example, a battery might store enough energy for a task while its inverter cannot support a motor’s starting demand.

Do Solar Panels Automatically Provide Backup?

No. A standard grid-connected inverter generally disconnects during a grid outage.

Backup requires suitable equipment, electrical separation from the grid and a design that supports the intended loads. A battery being present does not automatically establish whole-property backup.

The available installation area affects panel layout and expected generation.

A site assessment should examine more than whether panels physically fit.

Site Factors Include

• Roof condition and remaining service life.
  • Structural suitability.
  • Available area.
  • Orientation and roof pitch.
  • Shading from trees and buildings.
  • Access for installation and maintenance.
  • Cable routes.
  • Suitable equipment locations.
  • Landlord or property-owner consent.

Avoid installing a long-term system on a roof that needs significant repair without first assessing the implications.

Ground-mounted systems require separate consideration of land use, foundations, access and exposure.

Solar equipment and installation details should suit the property’s actual environment.

In Fiji, site assessment may need to address strong winds, coastal exposure, heavy rainfall, humidity and access constraints.

Questions to Discuss

• What wind design basis applies to the site?
  • Are mounting and fixing details supported by appropriate assessment?
  • Are materials suitable for coastal corrosion exposure?
  • Are equipment enclosures appropriate for their location?
  • Could flooding affect batteries or electrical equipment?
  • How will roof penetrations be weatherproofed?
  • Is maintenance access practical?

Ask for evidence supporting the proposed arrangement. A general “cyclone resistant” description does not replace site-specific structural assessment.

Do not choose a system solely by copying a neighbour’s panel count.

A suitable proposal should connect the consumption profile, available installation area and expected solar generation.

Design Assumptions to Review

• Historical electricity consumption.
  • Daytime demand.
  • Seasonal generation estimates.
  • Shading losses.
  • Temperature and equipment losses.
  • Inverter capacity.
  • Battery charging requirements.
  • Applicable connection or export constraints.

Ask how much generation is expected to be used directly, stored, exported or curtailed.

A larger array may not provide proportionately larger savings when additional generation cannot be used economically.

9. Evaluate Battery Storage Carefully

Batteries can store energy for later use and may support backup when the complete system is designed for it.

Their value depends on the operating objective and financial assumptions.

Battery Details to Confirm

• Nominal and usable capacity.
  • Continuous and surge power capability.
  • Compatibility with the inverter.
  • Backup reserve settings.
  • Expected operating conditions.
  • Installation location requirements.
  • Warranty duration and conditions.
  • Capacity retention provisions.
  • Maintenance and replacement arrangements.

A battery should not be selected from its kWh rating alone.

Ask the provider to explain expected performance during extended cloudy weather and what happens when stored energy is exhausted.

10. Confirm Connection and Approval Requirements

Before committing to a grid-connected installation, establish the applicable requirements with Energy Fiji Limited and other relevant authorities.

EFL’s connection guidance identifies licensed electrical contractors, permits and inspection as part of its connection processes. Solar-specific arrangements should be confirmed for the proposed project. Energy Fiji Limited

Request Written Clarification of

• Required applications and approvals.
  • Responsibility for submissions.
  • Applicable inverter and protection requirements.
  • Metering arrangements.
  • Permitted export, if any.
  • Inspection and commissioning requirements.
  • Relevant costs and expected milestones.

Do not assume that exported electricity will receive payment. Confirm any applicable export arrangement and rate before including it in a savings calculation.

11. Compare Complete Proposals

Compare quotations using the same objectives and assumptions.

A low package price may exclude work needed for a complete installation.

Costs to Check

• Site assessment and design.
  • Panels, inverter and mounting.
  • Batteries where included.
  • Electrical protection and cabling.
  • Switchboard modifications.
  • Structural or roof work.
  • Freight and inter-island transport.
  • Installation and commissioning.
  • Applications and metering.
  • Monitoring equipment or subscriptions.
  • Training and handover.
  • Applicable taxes.

Ask each supplier to identify exclusions, customer responsibilities and conditions that could change the price.

12. Review Savings Estimates and Lifecycle Costs

Financial estimates should explain how the figures were calculated.

Treat a payback estimate as a model based on assumptions rather than a guaranteed outcome.

Assumptions to Examine

• Expected annual generation.
  • Direct use of solar electricity.
  • Battery losses and operation.
  • Current applicable electricity charges.
  • Verified export arrangements.
  • Maintenance expenses.
  • Financing costs.
  • Equipment replacement allowances.
  • Changes in future consumption.

Compare scenarios where generation or self-consumption is lower than expected.

Ask whether quoted savings account for charges that remain payable after solar installation.

13. Confirm Installation Quality and Ongoing Support

Equipment selection is only part of system performance.

Installation, commissioning and after-sales support determine how effectively problems are identified and resolved.

Details to Discuss

• Relevant installer qualifications and experience.
  • Responsibility for structural and electrical assessment.
  • Commissioning checks.
  • Workmanship warranty.
  • Equipment warranty claim process.
  • Local parts availability.
  • Travel costs for remote sites.
  • Monitoring and fault notifications.
  • Maintenance requirements.

Distinguish a manufacturer’s equipment warranty from the installer’s workmanship obligations.

A Practical Solar System Selection Checklist

A Simple Solar Enquiry Example

The following example describes a requirement rather than a technical design.

A household can use the same structure with its appliance use and occupancy pattern.

Common Solar Selection Mistakes to Avoid

Common mistakes include:

• Choosing by panel count alone.
  • Confusing kW with kWh.
  • Ignoring when electricity is used.
  • Assuming every solar system works during outages.
  • Selecting batteries without checking power limits.
  • Overlooking roof condition and shading.
  • Accepting unsupported weather-resistance claims.
  • Assuming export income is available.
  • Comparing quotations with different scopes.
  • Treating projected savings as guaranteed.
  • Omitting maintenance and replacement costs.
  • Leaving support arrangements unclear.

Resolve unanswered questions before approving the final proposal.

Preparing an Enquiry for More Grow Group Fiji

When approaching More Grow Group Fiji, provide information about your property, electricity use and intended outcome.

Useful Supporting Information Includes

• Representative electricity bills.
  • Site address and photographs.
  • Operating or occupancy hours.
  • Major appliance and equipment list.
  • Existing solar, battery or generator details.
  • Desired backup loads.
  • Planned increases in demand.
  • Ownership or landlord consent information.
  • Indicative budget.

Ask More Grow Group to confirm the services available for your project, required assessments, proposed scope, exclusions and ongoing support.

Choosing a System Around Your Actual Needs

The right solar system for a home or business in Fiji depends on electricity demand, site conditions and the outcome the owner wants.

Begin with consumption records and clear priorities. Compare suitable arrangements, define backup expectations and assess proposals using consistent technical and financial assumptions.

A documented site assessment and clear handover requirements provide a stronger basis for discussing your solar project with More Grow Group Fiji.