Solar & battery projects

Office 6kWp solar PV system

This office’s power needs are supplemented by this 7kWp solar array feeding a 6kWp three-phase Fronius Symo PV inverter with excess power being fed back to BPC

5kWp solar for backup office power

This system powers an office in town with 5kWp solar on the roof and an 8kVA inverter. The 10kWh battery provides most of the overnight power, but the grid connection is there for backup. Remote monitoring is achieved with a CerboGX (and screen) and a Ruutitag keeps track of the temperature.

6.5kWp and 10kVA upgrade

We upgraded this system from a EasySolar 3kW with 3kWp of solar to a system with 6.5kWp solar system with 10kVA Multiplus inverters and a 2 x 10kWh Freedom Won batteries.

We’ve also linked a Ruuvitag to the Cerbo GX to provide temperature and humidity monitoring of the power room.

See the original system below

6kWp school pool pump PV system

This 5kW fronius with 6kWp of panels offsets the school’s daily loads for the pool pumps. And any excess power generated is fed back to the rest of the school so nothing is wasted.

20kWp solar PV vegetable farm

This plant offsets 50% of the farm’s daily power needs. This is achieved through 36 x 540W solar panels connected to a Fronius 20kW Symo PV inverter.

8kWp off-grid house

This 8kWp solar installation on the carport will power the 8kVA Victron Multiplus unit and the 20kWh Freedom Won battery. We’ve included a Cerbo GX and screen for monitoring.

Off-grid camp – 8kWp

This camp needed power for four rooms, a lounge and dining area as well as a kitchen and laundry facilities. The 8kWp solar system, 8kVA Victron Multiplus unit and 30kWh Freedom Won lithium ion battery provide the power!

Off-grid camp – 10kWp solar in 4 separate systems

The main part of this off-grid safari camp is powered by a 4kWp solar system, a 3kVA Victron inverter (EasySolar) and a 10kWh Freedom Won eTower – running their kitchen, bar and lounge. The pool pumps and the rooms are on their own separate solar systems.

Solar powered household – with grid backup – 10kWp

This system has an 8kW Quattro and an 8kWp solar plant for day-to-day usage with a 30kWh Freedom Won battery. Power will be supplied by the grid in case of insufficient solar power. System control and remote monitoring is achieved through the Victron Colour Control unit. We added another 2kWp to this system just after installation, bringing the total to 10kWp.

September 2022 update – we added another 30kWh battery!

Kwando Lagoon Camp – Lithium ion battery replacement

We were tasked with replacing a lead acid battery bank with a new lithium ion solution. The previous 48V (1600Ah) battery bank (76kWh) was replaced by a 40kWh Freedom Won LiTE battery to cope with some extra needs in the camp.

This new battery charges faster, takes up a lot less space, requires very limited maintenance  and will provide many more years of service. All this means less reliance on the generator for the camp’s power needs, which aligns with Kwando Safari’s environmental aim to reduce the use of fossil fuels.

We can now also monitor the system with Victron’s remote monitoring service, allowing us to pick up any issues with the system a rectify them in time. 

P.S. The old battery room is no longer needed, so the bonus is a new storeroom for the camp!

Off-grid house – 4.5kWp

Our client needed a solar system to power his off-grid house, which included standard household equipment as well as a couple of power tools. This system has a 4.5kWp solar array, 10kWh lithium ion storage (with 2 x Freedom won eTower units) and a 5kVA Victron Multiplus. The Victron Colour Control provides onsite management as well as remote access to the system for monitoring and programming if needed.

Off-grid tented house

This system powers a three-bedroom tented-camp-style house which includes a living space and kitchen. Its powered by a 2.3kWp solar system with 3kW Victron Multiplus inverter and 5kWh Freedom Won battery.

Small off-grid bush camp – 10kWp

This off-grid camp is powered by a 10kWp solar array and an 8kVA Victron inverter with 20kWh of storage in a Freedom Won lithium ion battery. Remote monitoring is through the Victron Colour Control unit.

Remote research camps – 8kWp

Two identical systems are going to a very remote location so the boards are pre-wired and ready to install on site. Each 8kWp solar system will connect to two Victron MPPT units, a 30kWh Freedom Won lithium ion battery and a 5kVA Victron Multiplus inverter. Remote communication is provided by a Victron Cerbo GX and touch screen.

Small off-grid house

This small 1.6kWp system upgrade powers an off-grid household with a new 3kW Victron inverter (replacing the 1200W) and a 5kWh Freedom Won lithium ion battery replacing the lead acid batteries. We left the original system in place and connected it to the new battery.

Out of town camp – 3kWp

This system has 12 x 270W panels (to cope with the daytime pool pump) and a newly installed Blue Nova RacPower “Daily Use” 5.2kWh lithium ion battery. This replaces the original 200Ah lead acid batteries which are a couple years old now.

Remote research camp – 3kWp

This 3kWp solar system is running a remote research camp in the Okavango Delta. The 3kVA Multiplus supplies power to their vital refrigeration and communications systems as well as the borehole pump. The system is powered by a 5kWh Freedom Won lithium ion battery.

Off-grid private lodges

We installed two similar systems, each with 6 x 270W panels , a 4kWh Blue Nova battery and 3kVA Victron inverter to run these self-catering private lodges in a remote bush location for Omogolo Bush Lodges.

Off-grid luxury family villa – now 4kWp

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This is a small system we did for the luxury family villa at The Lodge at Feline Fields a while back and we never shared at the time. It has 12 x 260W panels feeding a 14kWh lead acid battery bank and 5kW inverter

December 2021 update: We upgraded this to a 48V system, adding another 4 panels, replaced the batteries with a 10kWh Freedom Won and Victron Multiplus 5kW. It can now comfortably run the private pool and other amenities.

Off-grid camp and campsite – 6kWp

This camp and campsite outside Maun has a 6kWp solar array with a 40kWh Blue Nova battery linked to a 10kW Victron inverter system. We’re linking in a colour conrol (CCGX) unit to allow offsite management of the system.

Off-grid household – 3kWp

We completed this new 3kWp solar system which has 12 x 270W RenewSys panels connected to a 5kVA Victron EasySolar with 100A MPPT and a 10/7 Freedom Won lithium ion battery. Its taking up a tiny corner of the clients storage container and will feed the house, the farm and two pressure pumps. With the EasySolar unit, the remote monitoring system in built-in, so off-site monitoring will assist in ensuring the system is updated and running smoothly.

Grid-connected household with 3kWp solar

This small home system sustains most of the household load with 2kWp on the roof and a 3kW EasySolar with built-in 70A MPPT connected to a Freedom Won 5/4kWh lithium ion battery. Victron’s remote monitoring system is also built into these units, allowing easy off-site monitoring of the system. The house reverts to mains power when the solar cannot provide enough.

2020 Update: We’ve added another 4 panels to assist with extra daytime loads (water pumps)

30kWh Lithium ion upgrade


This 30kWh Freedom Won battery replaced a bank of 1600Ah (48V) lead acid cells. While not a solar installation (the batteries are charged daily from a generator), the lithium ion battery is able to be charged at a higher rate and, with its better recharging efficiency, we are able to reduce generator run time. To achieve this, there is a stand-alone 50A charger in addition to the 70A charger in the Multiplus 5kVA unit, giving 120A of charging capacity.

6kWp off-grid safari camp

We upgraded this old lead acid pack (24V / 1400Ah) with a 10kWh (52V / 200Ah) Freedom Won lithium ion battery. Increasing the system voltage to 48V allows us to double up on the solar system without the need for any more charge controllers – there are two 70A controllers in place handling the 12 x 250W panels. The old battery bank in the yellow cases makes for an useful comparison

2020 Update: We have added another 12 panels and further upgraded the battery to a 20kWh unit

Off-grid house and cottage – 8kWp


An 8kWp system feeds into a 16kWh BlueNova lithium ion battery through two Victron charge controllers. Power is provided by two 5kVA Victron Multiplus-II units. Remote monitoring with the Victron Colour Control unit is standard on such installations to provide real-time analysis and historical usage data.

Off-grid household – 1kWp (to start!) and now 2kWp as of November 2019

Marico solar

This system has been designed to be upgraded, so we’re starting with 4 panels for now with the plan to upgrade to a 4kWp in future and as it grows. This is linked to a 3kW Victron Multiplus-II and a 5kWh Freedom Won lithium ion battery. In addition, it has a remote monitoring system to keep track of usage. This system has been upgraded with another 4 panels in November 2019

Off-grid household – 3kWp

This system operates a household out of town with no mains power. The off-grid system has a 3kWp solar array connected to a 10/7 Freedom Won lithium ion battery and linked to a Victron EasySolar 3kVA unit, complete with remote monitoring access.

Off-grid cottages

This small system runs two off grid cottages. It has an 800W Victron Multiplus inverter/charger and 4 x 200Ah batteries (and a battery balancer). There are two such systems on this remote farm running two sets of cottages.

Office backup (with some solar)

This is a 5kVA office and workshop backup system with an 8kWh lithium ion battery from Blue Nova. For extended daytime outages, we’ve included a 1000Wp solar system on the roof.

December 2019 update: The solar was increased to 2kWp which now makes this system fully sustainable without the need for mains input.

Remote camp site – 4.5kWp

This remote 4.5kWp system with 5kVA Victron inverter and MPPT keeps a remotely located camp site operational. We’ve linked in a 12kWh Blue Nova battery to easily handle the overnight loads, while the remote monitoring system allows off-site control of the system

Off-grid office in Maun – 4kWp

We upgraded this 2kWp to a 4kWp system to add a small aircon unit. The new Victron MPPT charge controller (with up to 250V input) allows us to string up to 5 panels in series. We also upgraded the ailing lead acid battery with a Blue Nova 4kWh lithium ion battery to handle the small overnight loads for security lighting and refrigeration.

Safari Camp – 55kWp

This 55kWp solar array is connected to Fronius 20kVA grid-tied inverters and Victron Quattro units. At the heart of the system is a 195kWh Blue Nova lithium ion battery bank.

4kWp off-grid remote camp

This off-grid system provides all the power needed for a remote anti-poaching unit in the Okavango Delta – with a 16kWh Blue Nova battery and two 3kVA Victron Multiplus units. It also has a remote monitoring system to allow offsite monitoring.

Lithium ion upgrade: Blue Nova 16kWh


We used a 16kWh 52V (310Ah) Blue Nova lithium ion battery to replace a 900Ah lead acid battery bank. So far, the change has been dramatic, with the batteries getting to a 100% SOC on a daily basis despite cloudy weather – mainly due to the efficiency (96%) of the lithium ion system compared to 70% of a lead acid battery.

Blue Nova Retrofit – 32kWh

We replaced an ailing lead acid battery bank with a two Blue Nova 52V 16kWh lithium ion batteries for a 32kWh system. The original bank was a 76kWh bank with 24 x 2V 1600Ah lead acid batteries.


Work in progress – busy installing and programming the new 32kWh system

Residential off-grif 1.5kWp (upgradable to 2kWp)


This small 1.5kWp residential system has a 20kWh lead acid battery system and 3kW inverter to cope with fridges and power tools (occasional use). We’ve allowed for an additional 750Wp of solar for future needs.

June 2019: We’ve upgraded the battery bank to a 10kWh Freedom Won lithium ion battery and added 3 more panels!

Residential off-grid 3kWp

This residential installation has just had a 16kWh lithium battery bank installed

Update: March 2018 – we’ve now added another 4 panels, pushing this to 3kWp

Update: July 2020 – we’ve upgraded the 3kVA to a 5kVA inverter and upgraded the battery BMS (new on the left – old on the right above)

Safari Camp in the Okavango Delta


The main part of the camp is powered by a 4kWp solar system with two 3kVA Victron Multiplus inverters

DSC_0147.JPGEach of the tents have a 200L solar geyser and a 500Wp solar system with a 800W Victron Phoenix inverter housed in a lockable and weatherproof enclosure.

2kWp system in Maun and Kasane

A set of two 2kWp solar installations at the UNDP offices in Maun and Kasane with a 1200VA inverter to provide power to the computers, main server and security lighting. We are also in the process of replacing all the flourescent lighting with LED tube lights.

6kWp Off-grid residential solar system in Maun

This 6kWp system runs an off-grid house out of town. The two 5kVA Multiplus units power the loads from a 66kWh lead acid battery bank. A remote monitoring system allows off-site communication with the system.

Residential solar in Chanoga (30km from Maun)

This plant was initially a 1kWp system (left) and was upgraded to a 2kWp system. The 3kVA Multiplus inverter powers the house from a 4kWh Blue Nova lithium ion battery

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