FAQ

When you install a solar energy system on your property, you save money on your electricity bills and protect yourself against rising electricity rates in the future. This is how Solar Power Systems Pay for themselves. How much you can save depends on the local municipal rates and solar policies in your area, but going solar is always a great idea even if it’s just to save on your bill. Call us for an evaluation and we will give you actual savings projections.

The Grid is the Electric transmision and distribution network which belongs to both Nampower and your local municipal authority.

An off-grid PV System then, is a Solar System which is completely disconected from the grid typically producing enough power to cater to all your energy needs and storing excess power in bateries for use at night or on cloudy days.

Therefore a Grid-Tied System is one that is connected to the grid also typically producing enough power to cater to all your energy needs but using the grid as storage by feeding excess power to the grid in exchange for credits which can then be used at night or on rainy days.

A few aspects determine if Solar power is a viable option for you:

• The amount of energy you use
• The space on your roof
• That there are no shadows on the available space
• And Ideally In Namibia your roof orientation should be such that the installed panels face north

Please contact us for an evaluation that will determine if Solar is a good option for you.

Typically, shade falling on some of your panels will decrease the output of all your system’s panels but design measures can be implemented to prevent or minimize this.

For an off-grid system the answer is an obvious no. A Grid-Tied system will reduce your bill or cut the amount to zero if your system produces the same amount of energy you use.

On average 30 years. Parts of the system are designed to last have different lifespans and manufacturers offer various warranty lengths. Solar Panels typically carry an output warranty of 25 years and generally show a small reduction in output power 20 years after installation. While the Electronic components typically carry a 10 year warranty (up to 25 years now) but in practice last far longer.

At Supreme Engineering we only use components from Proven manufacturers and design to international standards guaranteeing that the system will generate the specified electricity. And since we offer FREE after-sale technical support for the lifetime of each of our systems, You can call us anytime you need assistance.

To Prevent the electricity your system feeds back into the Grid zapping the poor people from Nampower or the municipality who will be working on the line, the Answer is No for a typical Grid-Tied system without batteries, but adding batteries using Special inverters or inverter configurations and using a transfer switch are amongst some of the ways we are able to change that traditional No to a Yes.

• Solar Panels typically have a minimum 10 year product warranty and 25 year performance guarantee
• 5 to 10 years warranty for inverters
• 10 years warranty for the mounting system
• 5 years warranty on installers workmanship

Yes. If you have space, panels and batteries can be added, smaller inverters and charger controllers can be replaced with larger ones or alternatively our initial design for you can be an upgradable system.

A Grid-Tied System requires very little maintenance. If you live in a dusty area the panels and Electronic Components will just need to be cleaned periodically. An off-grid system with batteries however, requires significantly more maintenance and care in order for you to get the best life time out of your batteries.

We typically spend 40 hours outside and 10 hours inside the house and complete the job within 2-3 days. That said, our installation queue is typically 6-8 weeks out, sometimes longer, so contact us as soon as you’re interested if you have a sense of urgency about your solar project.

Your Energy Requirements do. From the energy usage information you provide, we will be able to custom design a system capable of meeting your needs for the foreseeable future.

Micro-inverters convert the power generated by a single (or two) panels to AC. They help overcome the effects of shading or panel failure on the overall output of the complete Solar panel Array

A typical Solar Power system consists of the following components

• PV Modules or Panels
• Inverters
• Charge Controllers
• Batteries

We generaly offer three types of systems:

• Flat-plate Systems
• Evacuated Tube Systems
• and PV Systems

All of them have their merits and After an evaluation we will be able to advice which is the more appropriate system for you

At Supreme Engineering we recomend that your heating system be serviced annually. This will ensure that you get the best out of your system

Provided you have Good Credit, There are a few institution that provide usually subsidized financing for Renewable Energy Systems in namibia

• First National Bank
• The Solar Revolving Fund
• Kongalend

Have a look at our dowload page for application forms you can print and complete at home