Batteries seem to be the obvious compliment to a solar PV installation. By storing the energy not used and discharging it later, batteries can you to save money on the ever-increasing cost of bought-in electricity. They can reduce your exported electricity to virtually zero.
Some see the effectiveness of batteries during the winter months as a limitation. In winter it is normal for your panels to not generate enough electricity to satisfy the demand in the house, let-alone have excess to charge batteries. However, by combining batteries with off-peak tariffs, there are cost savings possible, even in winter.
We also believe that you don’t even need a solar PV system to capitalise on the benefits of batteries.
Let’s explain it a bit more…
The existing national grid is a system of large power stations with large transformer sub-stations feeding smaller over-head cables which eventually get to our homes and businesses. This linear structure is designed to accommodate peak national electricity demand – which typically happens between 4pm and 8pm Monday to Friday and more so over the winter months.
National Grid and electricity supply companies actively try to encourage people and businesses to reduce their electricity use at peak times to ease the pressure on the grid network.
Conversely, at off-peak times (usually during the night), the country over-generates electricity from traditional power stations and wind turbines. This electricity often has nowhere to go. It sometimes even means that wind turbines, a source of clean energy, are switched off with the owners receiving compensation from the electricity suppliers.
Considering this issue, it is not surprising that more and more off-peak tariffs are becoming available. The energy companies are encouraging homes and businesses to use electricity over night by paying for it at a significantly reduced amount.
“You don’t even need solar PV to make batteries a viable technology”
We strongly believe that to save consumers money on their bills, and the solution to National’s Grid issue, is to have an intuitive electricity management system in place. A battery system can use off-peak tariffs, whether combined with solar PV or not, to make the most of cheaper electricity supply rates and to ease the burden on the grid.
Charging you batteries off-peak means they can be used every day of the year, and therefore maximising paybacks and increasing your return on investment. Environmental impact is significant as wastage is reduced.
How we can help
IDDEA have chosen to partner with Sonnen as the manufacturer of choice. Sonnen batteries use Lithium Iron Phosphate, which is ideal for usage in the home as charge/discharge rates are 2.5kW, which compliments the average high usage appliance.
Sonnen also have a fantastic warranty of 10,000 cycles or 10 years (which ever comes soonest). This is market leading as it does not matter if the cycle was from solar PV or from the grid. By comparison, Tesla have an ‘unlimited’ number of cycles warranty, however, once grid connected this reduces to below 3,000 cycles.