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ENERGY SAVING TIP #4 (Computers)
Computers use a significant amount of electricity as they are usually on for several hours during the day. Here are a few ways you can...
rentechsyst
Feb 27, 20212 min read


ENERGY SAVING TIP #3 (Lighting)
Did you know that a single inefficient light can consume more power than a modern TV or fridge??. Addressing lighting energy consumption...
rentechsyst
Feb 18, 20213 min read


ENERGY SAVING TIP #2 (Hot Water)
Hot water typically consumes about 20% of a household’s energy [1;2]. With the festive season upon us; and lots of people coming over to...
rentechsyst
Dec 17, 20202 min read


ENERGY SAVING TIP #1 (Refrigerators)
Why do some houses of similar sizes have different number of panels or different number of batteries from each other?? One of the common issues (besides usage profile) is energy saving and optimisation. Implementing energy optimisation; from the onset; will save you a lot of money; first from the cost of your solar system and on the lifespan of your system. We are going to regularly give you energy saving tips; whether you use solar and renewables or not; these tips will save
rentechsyst
Dec 1, 20203 min read


SOLAR IN THE RAIN
So the rainy season is upon us; what does this mean to our solar systems?? Do they still operate optimally and efficiently? What are the...
rentechsyst
Nov 20, 20202 min read


LIGHTNING PROTECTION 3: SURGE ARRESTER
In the last article we talked about the advantages of grounding your panels and equipment in protecting from lightning; electrical surges...
rentechsyst
Oct 15, 20203 min read


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...
rentechsyst
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...
rentechsyst
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...
rentechsyst
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...
rentechsyst
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...
rentechsyst
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...
rentechsyst
Jun 16, 20204 min read


April 2026 Projects
Project 1: -Client Name: Mhazo, Gutu -Date: 03 Apr 2026 -Size of System: .6.5kVA Major system with 6.5kVA Next Inverter; 48V 200Ah CeroEco Lithium Battery, 10x450W Monocrystalline All-weather panel, Protection Box, Installation Kit . -Load: TV, lights, ICT, fridge, freezer, ICT Project 2: -Client Name: Southlea Park -Date: 03 Apr 2026 -Size of System: .2kVA system with 2kVA Sumry Inverter; 12V 100Ah Polaris Lithium Battery, 1x550W Monocrystalline All-weather panel, Protection
rentechsyst
2 days ago1 min read


March 2026 Projects
Project 1: -Client Name: Sanyati -Date: 02 Mar 2026 -Size of System: .6.2kVA system with 6.2kVA CeroEco Inverter; 48V 100Ah Polaris Lithium Battery, 6x450W Monocrystalline All-weather panel, Protection Box, Installation Kit . -Load: TV, lights, ICT, fridge, freezer, ICT Project 2: -Client Name: Kampiyawo, Chitungwiza -Date: 07 Mar 2026 -Size of System: .6.5kVA system with 6.5kVA Next Inverter; 48V 100Ah Cero Lithium Battery, 6x450W Monocrystalline All-weather panel, Protectio
rentechsyst
2 days ago1 min read
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