Solar Power Off Grid

Custom Designed Solar Off Grid or Battery Backup

Be prepared when storms hit. Never be without power again with Sun City Solar custom designed battery systems to fit your lifestyle.  FREE technical support for the life of your system has made us the region’s #1 most trusted and knowledgeable off-grid and emergency solar battery backup designer and installer. Sun City Solar has installed hundreds of CUSTOM designed battery systems.

Products Lines: ENPHASE,  SCHNEIDER ELECTRIC,  TESLA,    SONNENN    We install all battery systems! The Enphase Battery System uses Lithium phosphate batteries which are known to be the most stable and safe of of the various lithium batteries. The Enphase battery system is 96% efficient. The Tesla Powerwall is 92% efficient and uses a less safer lithium ion battery.  These systems are used to provide power back into your home at night or when you need power during high consumption.

Why Rent Your Electricity?

Decide what critical appliances you need during a power outage. Off grid? How many hours a day each appliance will run.  Sun City Solar recommends the use of energy-efficient alternatives when using battery solar systems such as designing or retrofitting your whole house for low energy uses and carefully selecting LED lights and energy efficient appliances.

Keep electrical loads small for  small investment

Running heating and cooling with a solar power battery system will require several more batteries, adding to your solar system investment. Common appliances found on solar power battery backup systems are a few lights, a television and computer, refrigerator/freezer, microwave and perhaps the fan to run a gas or propane furnace. Solar Power Off-Grid  systems should always have a back-up generator for assurance that you will always have power during extended cloudy weather.

Use Real Data

If our solar site analyst states you will receive 5 hours of sun hours in your area, believe it. Daylight hours are not the same as full sun hours, which is equivalent to Kilowatts per meter squared per day. Be as accurate as possible when calculating your power consumption for the same reason. Miscalculations here can be disappointing and expensive.

Allow For Later Expansion of Your System

Life styles change and so do energy requirements. It is important to allow for later expansion. Over sizing inverters or allowing for duplicates later on can save you money in the long run.

Keep Batteries Warm

Batteries perform best at 70 to 80 degrees Fahrenheit. You will get the maximum amp hour capacity out of your batteries if they are operated at room temperature or slightly higher. Since batteries have a natural self-discharge rate, the rate of discharge can be reduced by storing unused, charged batteries in a cool environment at about 40 degrees Fahrenheit. Typical solar batteries used are Gel, AGM or Lithium.

Size Battery Banks for Several Days Operation

Once you have calculated your daily power consumption, Sun City Solar will size your battery bank to give you about 3 days of operation without any charging source (sun) available. We typically use 3 days of autonomy as our design figure. This would roughly calculate to 17% discharge per day with the ideal circumstance being the battery bank would be fully recharged by the renewable energy system the following day. In extremely sunny or windy locations we can reduce the size of the battery bank by as much as 20% to 30% because there is less fluctuation in the day-to-day recharge cycle. However, if the 3-day rule is followed and the batteries are discharged by 17% per day, we can expect longer life out of the battery bank than if the batteries are discharging 20% or more per day for 3 days autonomy

The Process

The process is simple for you. Please call us to determine your load consumption.  Together we will determine the battery system you need.