Blog | Rentech Systems

LIGHTNING PROTECTION 2: GROUNDING

As previously mentioned lightning can cause serious damage to your solar equipment. And this lightning strike does not have to be direct;...

rentechsyst

Oct 8, 20203 min read

LIGHTNING PROTECTION 1

The Ministry of Environment and Tourism[1] recently advised of the possibility of storms for this year’s rainy season. Storms are...

rentechsyst

Oct 1, 20201 min read

PRODUCT WARRANTY UNLOCKED!!

Warranty is defined as “a written guarantee, issued to the purchaser of an article by its manufacturer, promising to repair or replace it...

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Sep 29, 20202 min read

SOLAR PUMPING- How to size and select

So how do you size your solar pumping system? The key parameters that one needs to look at in designing a solar pumping system include...

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Aug 4, 20203 min read

SOLAR PUMPING- Key Aspects and Options

Do you have a well or borehole, or another type of reservoir and want to pump water from it at low cost?? Do you have an electric pump,...

rentechsyst

Jul 29, 20202 min read

SOLAR WATER HEATERS: Flat Plate vs Evacuated Tube; key components

The two most common types of domestic solar geysers are (i) Evacuated Tube and (ii) Flat Plate. Flat plate collectors- made up of a...

rentechsyst

Jul 23, 20203 min read

SOLAR WATER HEATERS/GEYSERS

Ok, so we will dedicate two posts to solar water heating. If you are like me, and cannot stand cold water (even in summer :) ) ...and you...

rentechsyst

Jul 20, 20202 min read

GETTING BETTER PERFORMANCE FROM MY SOLAR SYSTEM IN WINTER??- the more expensive remedies

We have covered the 5 least expensive solutions to problems faced with solar systems in winter in the previous post. The next 5 are the...

rentechsyst

Jul 9, 20202 min read

GETTING BETTER PERFORMANCE FROM MY SOLAR SYSTEM IN WINTER??

Well we have been getting a lot of queries from people who are experiencing poor performance from their solar system (designed and...

rentechsyst

Jul 7, 20202 min read

HOW DO I SIZE AND SELECT MY CHARGE CONTROLLER??

Be careful when choosing a charge controller/regulator for your system. Remember this controller will protect the most expensive...

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Jul 3, 20203 min read

WHAT IS A SOLAR CHARGE CONTROLLER/ REGULATOR? ... PWM or MPPT?

Now that we have talked about batteries to some detail, it’s important that we look at charge controllers. These are essentially the...

rentechsyst

Jun 29, 20202 min read

HOW DO I SELECT AND SIZE MY BATTERY?

We have talked about the different types of batteries and their pros and cons. Just a few pointers below on battery selection from the...

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Jun 23, 20203 min read

WHAT ARE THE DIFFERENT TYPES OF SOLAR BATTERIES?

There are various types of batteries suitable for solar systems. The generally common factor between these batteries is that they are...

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Jun 18, 20203 min read

WHAT IS A SOLAR BATTERY?

This week we look at solar batteries, an important part of your solar system… especially in this part of the world where back-up power is...

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Jun 16, 20204 min read

WHAT IS A PURE SINEWAVE ,MODIFIED SINEWAVE , GRID-TIED, OFF-GRID AND HYBRID INVERTER? DIFFERENCE??

There are a lot of different inverters out there of different shapes and sizes and types. But which one is the best for me, you might...

rentechsyst

Jun 11, 20203 min read

MONO CRYSTALLINE OR POLY CRYSTALLINE SOLAR PANEL; WHAT IS THE DIFFERENCE? WHICH ONE SHOULD I CHOOSE?

Manufacturers of panels offer these two types of panels and there’s a lot of misunderstanding about the differences between these two...

rentechsyst

Jun 9, 20203 min read

DO SOLAR PANELS WORK IN COLD WEATHER, IN WINTER?? DO I GET LESS POWER FROM MY SYSTEM IN WINTER??

Well to answer the above questions let’s first look at How Solar PV Panels work: → When the sun shines onto your roof, photons (basically...

rentechsyst

Jun 3, 20202 min read

DOES A SOLAR INSTALLATION ACTUALLY SAVE ME MONEY??

Good question, to answer it let’s look at a few different options: →Grid Electricity (ZESA) vs Solar A typical household (high...

rentechsyst

Jun 1, 20203 min read

October 2025 Projects

Project 1 -Client Name:,Chimunhopo, Tynwald, Harare -Date: 01 October 2025 -Size of System: 4.2kVA Solar System with 4.2kVA Sumry Inverter; 12V 200Ah Leoch Lithium Battery, 3x450W Monocrystalline panel, Protection Box, Installation Kit. -Load: TV, Decoder, ICT, fridge, internal lights Project 2 -Client Name:,Sithole, Westgate, Harare -Date: 01 October 2025 -Size of System: 1.5kVA Solar System with 1.5kVA CeroEco Inverter; 12V 100Ah Must Lithium Battery, 2x450W Monocrystalline

rentechsyst

Nov 153 min read

September 2025 Projects

Project 1 -Client Name:, Jaravaza, Kambuzuma, Harare -Date: 01 September 2025 -Size of System: 6.2kVA Solar System with 6.2kVA Sumry Inverter; 48V 100Ah EVolt Lithium Battery, 6x450W Monocrystalline panels, Protection Box, Installation Kit. -Load: TV, Decoder, Fridge, Freezer, internal lights Project 2 -Client Name:, Jakata, Madokero, Harare -Date: 03 September 2025 -Size of System: 1kVA Solar System with 1kVA Sumry Inverter; 12V 100Ah Polaris Lithium Battery, 1x595W Monocrys

rentechsyst

Nov 93 min read