Design and Install of Hybrid Solar System
Hybrid Solar Upgrades
AC Coupled Standalone
DC Coupled Standalone
LifPo Lithium Ion Batteries
Aquion Salt Cotton Batteries
Hybrid solar systems are used in a number of situations to provide back up power or reduce maximum demand. We can program your unit to meet any number of situations.
Backup Power Supply – Stand Alone Power System
Reducing Maximum Demand – Load Shaving
Maximizing Time of Use Metering – Load Shifting
Power Quality Filtering and Correction
Business Network Redundancy
Rural Off Grid Systems
A hybrid system works by using solar PV power during the day – with excess power used to charge your batteries for later use at night. The major design considerations are your peak power usage ie the most power you will use at any one point in time and the amount of power in kWhr that you expect to use during non solar producing hours. From point of contact Ecoelectric will help guide you towards the correct type of system and meet any budget constraints, before undertaking a detailed design and estimation process. Our engineering and modelling systems will correctly select the right product combinations and provide detailed electrical and financial modelling. We will ensure that your hybrid solar system has sufficient autonomy and head room so as to meet your power needs.
The hybrid solar unit is an additional inverter which takes your solar PV, mains, batteries and optional generator – combines and stabilizes it all into one. If the weather is black for days on end the system simply switches back to mains power when required, thereby ensuring consistent power and zero damage to your batteries.
PV Design – Electrical Calculations
PV Design – Production Modelling
Hybrid Design – Maximum Demand
Energy Storage – Peak Draw
Days of Autonomy and Storage Capacity
Generators and Backup Systems
Control and Monitoring
All of our estimations and statistics are on the conservative end of the scale thereby ensuring maximum life for your batteries (10+ years in most cases).
We recommend installing a kW of solar PV for every kWhr you want to store. This rule of thumb can vary wildly depending on your specific situation, so it is important that if you are considering hybrid solar that you go through a detailed design process. When looking at hybrid it is important to maximize PV production and reduce battery use. This can be achieved by load shifting items such as electric hot water systems and swimming pools onto day time usage. Ecoelectric can program your hybrid inverter such that it dumps excess power into these items thereby ensuring that you’re maximizing your investment. Further reductions may be achieved by recommending appliance changes such as LED lighting and other high efficiency products. All of our advice is accompanied by detailed financial modelling showing items such as return on investment and pay back periods.
Lithium Ion Batteries
Many of our hybrid solar systems come with LifPo batteries the very latest in lithium ion technology and are designed for a DOD of up to 70% thereby ensuring that you get some 6000 or more cycles out of your system. This is equivalent to 15 years of operation. The systems will take a discharge of up to 90% before automatically cutting out to protect your batteries. LifPo batteries hold their charge for longer, will take more discharge cycles, respond better to temperature and are generally considered the very best of technology for use in hybrid or off grid systems.
We also offer Aquion’s aqueous hybrid ion batteries which is a fancy term for salt water. These batteries also have an extremely long shelf life of up to 10 years and can be discharged all the way to 100%. Aquion are heavily backed by investment heavy weight Bill Gates and have proven utility scale systems installed in the US and abroad. About the only limitation with salt water batteries are their weight and physical size, and this will be the deciding factor when chosing between a lithium ion or aqueous hybrid ion solution.
Hybrid Without Backup for Load Shifting
Amongst our solar hybrid range you will find only the very best brands using proven technology. There are hybrid without backup possibilities using LG Chem and Sungrow, the SMA SE and Samsung’s SDI with lithium lonen batteries. These systems are designed to store excess solar energy for later use at night thereby ensuring full benifit of solar production. They are ideal for people on ToU tariffs, or for business’ facing peak demand charges.
THE ECONOMICS OF HYBRID
Hybrid solar is quickly becoming cheaper than using mains electricity with output costs now working there way under standard retail tariffs. Even with finance terms hybrid delivers savings and returns far greater than your average investment. There is the added bonus of knowing that your electricity is coming from a stable and clean source and that it will keep powering on in the event of a black out. Take a look at this finance modelling to see how hybrid solar can work for you.
The latest design methodologies emphasize more panels and less batteries. This greatly reduces system costs and can still allow for full autonomy if the system is sized and designed correctly. In most cases the PV component is sized around the minimum winter average with batteries sized for 1-2 days of autonomy thereby ensuring that there will be enough power on hand for all but the darkest of days. All systems come with the option of generator backup and can be easily upgraded both in terms of panels and batteries.
WARRANTY AND MAINTENANCE
A hybrid battery system is a serious investment and should therefore be backed only by proven products with long standing warranty records. Ecoelectric can detail the warranty and service conditions for each part of the service and provide a full 5 year warranty on top. Most of our suppliers offer a 5 to 10 year warranty as standard and have the service history to prove its worth. We can outline any maintenance requirements which may occur over a ten to twenty year period and illustrate how these items will affect the whole of system cost. For business customers we can provide NVP and life cycle projections with bankable warranties to ensure the system is commercially viable.
Take a look at our full hybrid range or request a free design and written estimate. Do you know someone that needs to purchase solar? We will give you a $150 referral bonus upon installation!