You’re investing in solar and battery, why not make them work harder for you?

Next Optimise is our dynamic tariff and app combo designed to help you get more from your system. It connects to wholesale energy prices and uses AI to charge your battery when prices are low and sell back when prices are high.

Illustrative savings

A customer with a Tesla Powerwall 13.5 kWh battery and 8 panels could save up to £637* a year compared to a standard variable tariff

The same customer with one Sunsynk 5.1 kWh battery could save up to £347*

12-month fixed term tariff at wholesale prices. Requires solar panels & battery. The app auto-optimises battery charge/discharge based on real-time prices throughout the day to import at lower price times and export at higher price times. Wholesale prices may vary depending on market conditions. Eligibility and T&Cs apply.

*Illustrative modelled example - not a guaranteed saving. Eligibility, terms and conditions applySaving claim based on linking Next Optimise to your solar and battery system. Actual savings vary based on your set-up.This is an example saving based on simulations for 2025 of a property in the East Midlands with electricity consumption of 4,000 kWh per year (with the customer home all day), fitted with an 8-panel solar array generating 3,400 kWh per year, plus a Tesla Powerwall battery with 13.5 kWh capacity, and using the Next Optimise optimisation functionality at all times. For comparison purposes, Next Optimise pricing for 2025 has been adjusted to include our 3p early bird booster and the applicable VAT rate has been set to 0%.Savings are based on comparisons to a standard electricity import rate of 25.36p/kWh and a standing charge of 51.45p/day, based on the Ofgem Energy Price Cap rates for the East Midlands from 1 Oct 2026, including a VAT rate of 0% on electricity, and Smart Export Guarantee (SEG) payments of 13p/kWh under E.ON Next Export Exclusive v3.Actual costs and savings may vary depending on future energy prices, solar generation, system configuration, the presence of other energy technologies such as an EV or heat pump, energy consumption, and usage of the Next Optimise optimisation functionality. Geographical and eligibility restrictions apply.

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