Botswana's 3 main industries are Cattle farming, Mining and Tourism, its economy is stable and doing well and the Government is relatively free from major corruption. It also has a program of reinvestment in infrastructure and services for it's people.
Which ever business you plan on focusing on it will need to have a market outlet so choose one that relates to one of the above, it can be a service industry to it or a complimentary business,
Selling (or renting) solar powered chargers for cameras etc to lodges or directly to tourists for their stay there, this is a small example but shows the scope. Next you need to consider how such a business would set up routes to market, the marketing that would be needed and the arrangements for delivery and collection of the equipment. In this case several models are possible, short term hire or long term, short term will be to individuals long term to organisations or lodges.
Following on there needs to be a set pricing structure that makes it attractive to organisations and lodge to offer your product (what;s in it for them) and a Usp for the end user (why would they need it and what can they gain from having it).
Once you have put all that together what is the potential market size, and the likely penetration into the market, how easy is it for someone to replicate your business and what alternative systems are out ther as competitors.
You will need to calculate the capital investment required to set up the business and the likely capital returns, how long will it take to get back the investment and how long to repay any start up borrowing.
Finally and there is always more detail you can out in a such a business case, how long will the business last, what are the likely threats to the business (in this case possibility of manufacturers building solar charges into the equipment for example)
Construct a competitor analysis, who is offering what and at what price, can you beat it and on what (service,price, convenience etc). This competitor analysis you would probably outsource to do so factor in the cost of doing ine and the on gong cost of continual updating of it .
What premises, equipment (includes vehicle and systems) would be needed for such a venture, cost them, and allocate a life to them (how much they depreciate and how long before replacement will be required , from this you should work out the likely set up cost, the ongoing replacement costs and the life return on a product, e;g a charger is hired out for $2 per day, it has a 30% in used return so you can expect approximately $2 x 100days rental (probably on the high side but shows what I mean)therefore your product is expected to earn $200 per year, how much did it cost, lets say $50, how lng will it last ,again lets say 2 years, so the product total income per unit is $400, with a buy in cost of $50 and an expected replacement cost of $50 at the end of 2 years therefore the capital you have to work with is $300 during this time, factoring in the business over heads, people, premises, marketing, transport, power use and everything else a business needs to run how many units will you need to be selling /hiring to break even, and how many to make whatever margin you see fit, when adding up the number of units required to meet the business margin requirement also factor how likely this is to achieve (an go conservative, too many businesses have over ambitious sales forecasts at the start up phase).
The same principals are needed for any business case for any product offering, think wider than the current business case you construct , will starting one business lead to an expansion, how do you get product for sale or hire into the country, Botswana has good links to South Africa by road but it is fair costly to transport goods and you will incur local import duties, can it be sourced in country and if so through whom??????
One more thing in the example I have given why would tourist choose to rent or buy one and not bring one with them, what can you offer to make this a more attractive proposition ( in some more remote areas accessed by light aircraft weight of baggage is a major issue and most tourists are limited to 12-15kg so there's one reason) having your product as multi functional as possible would be another, if it was capable of charging, all manner of electronic equipment and was at a price that was reasonable then it would negate tourist having to bring umpteen separate chargers but you would have to ensure that there was all the right connectors and voltage standards in the kit you offer this in it's self would require a constant market research team to meet the ever changing electronics market, either this could be done in house but probably more cost effective to outsource it to someone else, or to the equipment manufacturer of the product you offer, it will however be another business overhead.
Live and work central Africa, with 20 years experience in product management in the UK