So I had a look at the Peco Power website, there were no mentions on the where the product are being sold, only mentions of funding and franchise opportunity, doesn't really look like they are aiming for the consumer market yet, and I highly doubt this really took the prof and his teams 7 years to develop.
From their website, I can see that they wants you to pay R350k for 100 units (inclusive of business supports etc), so that you can then rent out the units to other people and then charge those people for a monthly subscription fee. They have a "proprietary" rent-to-own technology that auto locks the powerbrick at a predetermined time interval which requires a code to unlock after the monthly subscription payment is received.
The more I look at them, the more I feel that this company is not at a mass production phrase, feels like the eskom crisis this year and the fear of continual load shedding for years to come makes this business now feasible to start / expand via a franchise type business model.
I suspect the original goal of this project was to connect solar panels or wind type power generation equipment to the powerbrick instead of relying on the grid, the true ip is probably related to the design which makes it easy to connected power generating equipment and additional bricks with untrained hands. But I can't help to feel that in its current form, the business is not really about providing power to low income household / rural areas, and the talk just feels like a way to improve their branding to get funding via franchise or other VCs in the impact investment space...