Buying into Solar at a budget level can be a little limiting and you have upgrade paths to follow, however not everyone wants to start small and “test out solar” and with the export sales in mind or complete solution, many will want to meet there total needs from the outset.
ESS ( Energy Storage System) is a system with batteries in mind, while we have not ruled out solar with the inverter you could add this later. The idea with ESS is where you have a cheap rate tariff where you can charge your battery and use that power through the day and night.
Your inverters charge current plays a large part in the battery size as you can only charge within a limited time, such as 4 hours being typical. The 8.8kw Sunsynk inverter can charge at 190amps which means that over the 4 hours 760ah battery could be charged. That’s 9.6kw per hour or 38.76kwh.
With 2, 15kwh Tower batteries you will be able to store 30kWh of power daily to use when energy prices are higher. You will only pay around £3.10 per day for power or in annual terms, your energy bill to £776.50 per year.
Here are somethings to keep in mind.
The system works by storing 30kwh of power to use, the inverter provides 8kw of power, when you exceed this, you will be using power from the grid. You need to ensure that you have enough output from the inverter to make the most from the battery and low cost energy.
You can add inverters to work together. You can also add to the batteries which could mean that you need to “balance the system” so that the power in and out does not exceed the ratings and recommended use.
Do not buy a 30kwh battery if you use more power in a day, its life cycles should last 10 years+ for home storage.
You may want to consider the draw (current) from the battery and what level this would be. Ideally 5.12kw as a normal load will be fine. With dual inverters the recommended power up to 15.2kw is the top end of the recommendations. Max peak load of 28.5kw.
Whats in the Kit:
Sunsynk 8.8kw Single phase inverter.
Two 15kwh LFP battery towers.
AC Isolator- 40amp.
Bus bars.
Short Bus to inverter cables. (375A)
Note:
You can order 10mm AC cable for this inverter.
Upgrading:
Adding solar to this inverter allows you to use power and recharge from the sun. Rather than paying to charge, you should consider the day time loads in order to give you a longer run time from stored power.
You will need a minimum of 4 panels to meet the start up requirements.
ROI: 2.6 years
The best systems pay for themselves and offer the best value when this is much shorter. We have used £0.265kwh grid costs, and £0.07kWh as low rate charge costs. We have taken off the charge costs to the power value when used.
£4.70 per day
£1,715.5 per year
Profit/Saving EOL £12,694.70 -£21,987.00
Does not include installation.
Head over to the shop to find all our Solar Kits.
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