Free Solar Installer Tools and Client Management in Nigeria

The Mishka Installer Toolbox brings together 14+ free online tools for planning and quoting solar installations in Nigeria. A free account also provides a workspace for customer records, site projects, jobs, installation histories and follow-up reminders.

You can calculate appliance loads, prepare a branded quotation and keep the related work under the right customer or site. After installation, you can record equipment serial numbers, track warranty dates and plan maintenance visits.

The calculators work without signing in. Saving project work and using the customer management features require a free account.

This guide explains what the toolbox includes and how to use it from the first customer enquiry through to after-sales support.

Which solar installation tools are included?

Different stages of an installation need different information. Before choosing equipment, you need a load assessment. Before ordering panels, you need to check the proposed string arrangement. Before sending a price, you need a complete bill of materials.

The public toolbox includes:

The customer and business management workspace sits alongside these 14 tools.

Start with the customer’s actual electricity needs

A request for a “5 kVA system” leaves several questions unanswered. Which appliances must run together? What needs to stay on overnight? Does the customer expect to add a freezer or water pump later?

Record the appliance quantities, power ratings and operating hours before choosing equipment.

Watts measure power demand at a particular moment. Kilowatt-hours measure energy used over time.

For an appliance operating at constant power:

Daily energy in kWh = quantity × watts × operating hours ÷ 1,000

Consider an illustrative shop in Osogbo using these assumed ratings:

The combined rated running load is 335 W if everything operates together. The daily energy requirement is 2.23 kWh before system losses.

This is a worked example, not a complete system recommendation. Use the customer’s actual appliance ratings and assess starting requirements separately.

The Load Calculator organises these inputs. You can pass its results into the System Sizer, then review the backup requirements and other design assumptions.

Check equipment compatibility and the site

Inverter capacity and battery storage answer different questions. The inverter must supply the intended load, while the battery needs enough usable energy for the required operating period.

Battery Runtime & Bank Config helps examine the proposed bank. Can It Run This? checks an appliance list against inverter running and surge ratings.

For the solar array, use the PV String Designer to check the arrangement against the panel and inverter specifications entered. Confirm the exact equipment model and revision using the manufacturer’s documentation.

The Product Spec Database provides listed specifications and available datasheets. The protection sizing tool helps assess PV and AC protective devices.

Record roof conditions, shading and cable routes in the Site Survey. Use the Roof Planner to explore a panel arrangement, then confirm measurements and mounting requirements on site.

These are practical installation considerations. NEMSA’s renewable energy practitioner guidelines include inverter and battery installation, electrical protection, troubleshooting and maintenance among the relevant technical competencies.

Prepare a quotation with a clear scope

The Quote & BOM Builder turns equipment quantities and installation costs into a quotation.

You can transfer the main equipment quantities from the System Sizer, enter current supplier prices and add labour, transport, markup and discounts. Review the remaining site materials before finalising the price.

The quote builder does not retrieve live supplier prices. Check costs and availability before sending a quotation or reusing an older one.

Explain which appliances the proposed system is intended to supply and the assumptions behind the backup estimate. Record anything excluded from the price.

The Documents Generator prepares proposals, invoices, WhatsApp quote cards, product specification sheets and warranty certificates. Your saved branding profile supplies company details and a logo across documents.

A free account gives access to A4 previews and branded PDF exports through the browser’s Print / Save PDF option.

Keep customer details and project work together

A customer may return months later for an additional battery, a fault investigation or an installation at another property. Having the original details available makes that conversation easier.

The account workspace includes a searchable client directory. Each record can hold the customer’s name, phone number, email address, location and notes.

You can update contact details, use call and email shortcuts, and open the customer’s linked projects and jobs.

Organise several sites under one customer

One customer can have multiple site projects. For example, a customer’s home and shop can have separate projects while remaining linked to the same client record.

Each project keeps its saved tool work together. You can reopen the relevant load calculation, survey, quotation or commissioning checklist without mixing it with another site’s work.

Linked customer details can also fill relevant fields in quotations, surveys and documents.

Record installed equipment and warranty periods

Add an installation date and system summary to the customer’s record. Then record the installed products, quantities, serial numbers and warranty periods.

The client view calculates warranty end dates from the installation date and the number of warranty months entered.

That record gives you something specific to consult when arranging a service visit or discussing a replacement. You can check which product was installed and the warranty information you recorded at the time.

Plan maintenance and follow-ups

Create reminders for maintenance visits, warranty checks or customer follow-ups. Each reminder can include a due date and notes.

The client book shows pending reminders, upcoming work and overdue items. Mark a reminder complete after dealing with it, or return it to pending when further action is needed.

For example, after a customer reports reduced backup time, you can record a follow-up to review their appliance use and inspect the system. The task stays visible alongside the customer’s details.

Track installation jobs and outstanding balances

The Work section records jobs with their linked customer and project, date, location, description and private notes.

Jobs can be marked Draft, In progress, Completed or Cancelled. This helps distinguish proposed work from installations already underway or finished.

You can record the contract value, direct cost and amount received. The workspace uses those figures to show the outstanding balance.

The Finance section records expenses such as materials, labour, transport, fuel and tools. An expense can belong to a particular job or be recorded as general business spending.

It also provides a breakdown of recorded costs and profit by job.

For example, a hypothetical job worth ₦1,000,000, with ₦700,000 in direct costs and ₦50,000 in additional expenses, leaves ₦250,000 before any unrecorded costs. If ₦600,000 has been received, the outstanding balance is ₦400,000.

Those are illustrative bookkeeping figures, not current solar system prices. The financial view depends on the amounts you enter.

Base savings estimates on Nigerian customer records

Use the customer’s actual electricity and generator spending when preparing a savings estimate.

For grid electricity, start with a recent bill or prepaid vending receipt. NERC explains that the applicable tariff appears on these records. Its consumer guidance also notes that electricity tariffs vary by location and supply conditions.

For generator use, record the customer’s own fuel purchases and operating pattern. Assess how much of that use the proposed solar system could realistically replace.

Enter those figures in Savings & Payback and explain the assumptions behind the result. The calculation does not include financing costs or battery replacement.

Keep records after the installation

Use the Commissioning Checklist to work through PV, battery, AC and handover checks and prepare a commissioning report.

Keep the customer’s installation details and equipment records up to date. If a fault appears later, Troubleshooting & Config provides information on listed inverter and battery codes, including likely causes, suggested checks and escalation guidance.

Consult the manufacturer’s instructions for the exact unit alongside the lookup.

The saved project work, installation history and reminders give you records to return to when the customer needs support.

Get started with the Mishka Installer Toolbox

You can begin with a single appliance list in the Load Calculator or open the tool needed for an existing job.

Create a free account to save work, organise customers and projects, record jobs and prepare branded documents. Account setup includes your contact name and confirmation that you followed the Mishka WhatsApp channel for stock alerts and price updates.

Open the Mishka Installer Toolbox.