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Off-grid solar systems: an completely guide

Off-grid solar systems: an introductory guide
Off-grid solar means that you can meet all your energy needs with the power of the sun - without help from the grid. To make this possible, you must install a solar power system in conjunction with an energy storage system, such as a solar battery, at the point of power consumption (your home).

Installing an off-grid solar system was once a marginal concept because of the large space requirements and prohibitive costs. But advances in solar technology over the past decade have made solar devices more efficient and cheaper, bringing them into the mainstream. It is now a fairly common sight to see RVs and country cabins powered entirely by off-grid solar systems.

If you're thinking about buying an off-grid solar system for yourself, you've come to the right place. In this blog what you need to know about off-grid solar systems before you buy one. We'll help you find out if an off-grid solar system is right for you and tell you how to buy the right system for your needs.

What is an off-grid solar system?
While many people only think of solar panels when they hear "off-grid solar," the reality is that you need to add many other components to get a functioning off-grid PV system.

A complete off-grid solar system is one that has all the necessary equipment to generate, store and deliver solar energy on-site. Because off-grid solar systems operate without a connection to an external power source, they are also called "stand-alone solar systems."

Unlike other types of solar systems, such as the more common grid-connected solar system, off-grid solar systems rely on batteries to provide power when the sun is not available.

However, batteries are expensive - much more so than the solar panels with which they are coupled. The need for adequate battery storage in off-grid solar systems makes them much more expensive than grid-connected solar systems.

What are the various applications of off-grid solar?
One of the biggest advantages of solar power as an energy source is its scalability and modularity, the extent to which the components of a system can be separated and recombined for flexibility and variation in use.

It works at all levels, from small devices such as solar-powered phone chargers to a system that can power a factory.

Here are some of the most common applications of off-grid solar power:

Charging a charger for a portable phone or tablet
Powering the appliances in an RV
Generating electricity for small cabins
Powering small energy-efficient homes

It is worth noting where off-grid solar systems do NOT make sense: where there is easy access to the power grid. This covers situations where you want to power a house in a town, suburb or village home.

If you are, you can save much more by choosing a grid-connected or hybrid solar panel system - or even just sticking to grid power - depending on the economics of solar in your area.

What equipment does an off-grid solar system need?
Here is a list of all the equipment needed for a functioning off-grid solar system:

Solar panels
Solar charge controller
Solar inverter(s)
Solar battery
Mounting and racking system
Distribution boxes

How to size an off-grid solar system?
Deciding on the size of the system you need is an early and absolutely crucial step when it comes to installing an off-grid solar system.

It affects the type of equipment you need, how much work the installation will involve and, of course, the overall cost of the project. The size of the solar installation is based on the amount of power the system needs to provide.

There are two different ways to figure out what number you need, and they are based on:
Your current usage
Load evaluation

Base the size of the solar installation on usage
You can use this option if you want to maintain your current lifestyle while switching from grid-connected to off-grid solar. To do this, simply consult your monthly utility bill to determine your electricity consumption in kilowatt-hours.

You can then tailor an off-grid system of that size, although you might want to go a little bigger - say 10% more - to allow for solar inefficiency.

Base solar system size on load evaluation
The second option is to do a full load evaluation to determine how much power you need.

1. Calculate your total electricity consumption needs.
Start by listing all the appliances you plan to use and how many hours you will use each. This will allow you to calculate the power consumption of each appliance, as well as your total power consumption over a day.

Once you know how many kWh you consume per day, you can determine the size of your solar array and solar battery storage.

2. Calculate immediate load requirements.
You also need to calculate how many appliances you can use at the same time. This will help you calculate the instantaneous wattage requirements, which you need to know in order to correctly size the inverter (the inverter handles the AC loads).

3. Decide on battery storage capacity.
Next, you need to decide how much energy storage you want. Do you want to cover usage for just one day, or do you want additional backup capacity?

When it comes to solar battery backup, the rule is generally that you want enough storage for at least 2-3 days of use during the highest usage time of the year.

4. Design a system around your number from steps 1-3
Figuring out the dimensions of these three crucial components - the solar panels, inverter and battery storage - is usually enough information for solar equipment suppliers to customize a complete off-grid kit for you, check more off grid solar system here:

How To Taste Coffee

How To Taste Coffee

Whether a cup of coffee is good or not is a very direct feeling, but this feeling requires training and also needs to break the stereotypes brought by experience.

The most common reaction of coffee drinkers is "I don't want sour" or "I don't drink without sugar and milk." Only by breaking these prejudices can we take the first step in coffee taste.

Good coffee can show the taste of many fruits and various delicious foods and spices at the same time when drinking. These are not additives but the original flavor of the coffee.

With so many flavors in coffee, it is necessary to have a keen sense of smell and taste to distinguish its fineness. Some people are naturally more keen on the taste, while others need more tasting to improve their taste ability. The key lies in "seriously and consciously to train one's own tasting ability."

To make it easier for the drinker to describe the diversity and richness of the coffee's flavors, several ways are usually to help you experience the cup.

Do you want to brew a better cup for your coffee time?


The best coffee is freshly ground and brewed. It is recommended to buy original coffee beans for brewing because the aroma is the strongest within 15 minutes after grinding. Fractional smelling may also have subtle levels, which will help you experience this cup of coffee. Buy powder that has been ground so that not only will the aroma be greatly reduced, but the flavor will also be affected.


The coffee has just been brewed and is too hot to drink directly. At this time, you can smell the aroma first. The "characteristic" of the coffee's aroma corresponds to the place where the coffee is produced, and the "strength" of the aroma is usually related to the freshness of the coffee, measured by the length of the period from the roasting date to the date of use of the coffee. It is also isolated by the packaging The influence of moisture and oxygen.


Flavor represents the main characteristic of coffee: the sensory experience of the "middle section", which lies between the moist aroma, acidity, and aftertaste of coffee. The flavor combines all the taste buds and retro-nasal impressions of coffee. Flavor includes the strength/quality/complexity of taste and aroma.


The aftertaste is defined as the positive flavor characteristics (taste and aroma), the length of time that remains at the back of the tongue after drinking coffee. If the aftertaste is short or has a negative flavor (residual bitterness, etc.), it will reduce the experience of the cup of coffee. If the aftertaste is long and has a positive flavor, it can enhance the experience of this cup of coffee.

Positive adjectives: long aftertaste, keeping the good flavor in the throat.

Negative adjectives: short aftertaste, no flavor retention, or inability to distinguish the remaining flavor. مل بت


Acidity is usually described as the "brightness" of coffee when it has a positive flavor, and it is described as "sour" when it has a negative flavor. In the best case, the acidity imparts coffee sweetness, lively texture, and flavor characteristics like fresh fruit. It is usually the characteristics that can be felt immediately when the coffee is drunk.

However, excessively strong or significant acidity may make people feel uncomfortable, and excessively high acidity may not be appropriate for the flavor characteristics of the coffee, making people feel that the cup of coffee is "out of balance". The acidity quality is based on the terroir of the coffee production area or the influence of other factors (roasting degree, brewing purpose, etc.).

Positive adjectives: bright, lively, soft, rich, acidity can be converted into high sweetness.

Negative adjectives: sharp, irritating, monotonous, sourness cannot be turned into sweet.

Get free resources: An easy and free caffeine calculator


The entire body refers to the tactile sensation of coffee in the oral cavity, especially the tactile feel between the tongue and the palate. Coffee that is "heavy" or "light" can have a pleasant tactile experience. Although the intensity of the two is completely different, both of them can make the cup of coffee you drink more effective.

Positive adjectives: thick, round, smooth, light.

Negative adjectives: watery, astringent, dry, scraping, grainy.


The balance blends all the elements of this cup of coffee, including flavor, aftertaste, acidity, and the entire body to present a complementary or contrasting feeling. If the coffee lacks certain aroma or taste properties, or some are too strong, then the balance is not good.

Influence of drinking temperature

Freshly brewed coffee is not suitable for drinking, and people cannot feel the flavor on their tongues under this high temperature. Once the coffee cools to 70°C, the sensation of smell behind the nose is most obvious at this temperature, which is suitable for savoring the quality of flavor and aftertaste.

As the coffee continues to cool down, the emphasis is on the acidity, body, and balance of the coffee.

If the coffee's flavor, aftertaste, acidity, and mellowness can be integrated with each other and produce synergy, it is the perfect result of a cup of coffee.