Online solar design office for installers
Starting costs about $2,340 in the United States and 376,000 NGN in Nigeria. After 12 months, this business can bring in about $2,120 net per month in the United States and 527,000 NGN in Nigeria. The starting money comes back in about 5 months, with 30 hours of work per week.
Mundyo estimates, data as of 2026-11-02.
See the numbers for my countryFree, no account, in the currency of 250 countries.
The numbers
| Country | To start | Net per month (month 12) |
|---|---|---|
| United States | $2,340 | $2,120 |
| Nigeria | 376,000 NGN | 527,000 NGN |
| United Kingdom | £1,580 | £1,500 |
| Kenya | 102,000 KES | 72,700 KES |
| India | 53,000 INR | 53,000 INR |
Amounts adjusted to each country's price and income levels.
The problem
Small installers lose hours on system sizing, wiring diagrams, yield simulations and grid connection paperwork instead of working on site.
The solution
An online design office delivering sizing, layout plan, single-line diagram, yield simulation and paperwork within 48 hours from photos and bills.
Your customers
Independent solar installers and electricians, small renovation firms and equipment resellers without in-house engineering.
How you make money
€60-200 per residential file, €300-800 per commercial project, or a €400-1,200 monthly subscription.
Competition
Self-service design software, traditional engineering firms, freelancers on platforms and free design services from distributors.
Who has an edge
An engineer or draughtsperson fluent in design software and electrical standards, fast and reliable, able to serve several countries remotely.
The risks
Standards and procedures that differ by country, liability for calculation errors and dependence on a few large clients.
The first 3 steps
- Produce three sample files showing deliverable quality.
- Contact thirty installers offering a free first file.
- Set turnaround times, prices and an input checklist.
How the numbers are calculated
Example in a high-income eurozone country, at month 12: revenue €2,100 − costs €600 = €1,500 net per month. Revenue: 15 residential files × €100 + 2 business projects × €300. Costs: design software, advertising, computer, insurance, social contributions. For other countries, Mundyo adjusts the starting budget to the price level (World Bank) and the income to prices and customers' purchasing power, then converts at the day's exchange rate.
Frequently asked questions
How much does it cost to start: Online solar design?
About $2,340 (United States), 376,000 NGN (Nigeria), £1,580 (United Kingdom), depending on the country. Mundyo calculates the amount for 250 countries.
How much can you earn per month?
After 12 months, about $2,120 (United States), 527,000 NGN (Nigeria), £1,500 (United Kingdom) net per month, after costs.
How long until I get my starting money back?
About 5 months, with 30 hours of work per week.
What are the risks?
Standards and procedures that differ by country, liability for calculation errors and dependence on a few large clients.
Where do I start?
1. Produce three sample files showing deliverable quality. 2. Contact thirty installers offering a free first file. 3. Set turnaround times, prices and an input checklist.
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