Back

Why is my PV system discharging to the grid when my battery is not fully charged?

With your battery set to charge first, there may still be times it will discharge a small amount of AC power back into the grid. This is due to the battery management system which is there to protect the battery from being damaged.

Part of that protection involves ensuring there is sufficient charging current during the charging cycle and preventing any excessive charge cycling at elevated levels of battery state of charge. For that reason, when there are only a few hundred watts of excess power from the solar PV system this will be exported to the grid rather than be stored in the battery.
This also helps prolonging the life of the battery, so what you are seeing going back to the grid is perfectly normal and if it weren't to happen the battery would be in danger of becoming damaged.

My page

facebookinstagramtwitterlinkedIn
Privacy PolicyTerms & ConditionsInitial Disclosure DocumentComplaints Policy

© Otovo 2023

Otovo Limited is an appointed representative of Product Partnerships Limited which is authorised and regulated by the Financial Conduct Authority. Product Partnerships Limited's Otovo Limited is an appointed representative of Product Partnerships Limited which is authorised and regulated by the Financial Conduct Authority. Product Partnerships Limited’s FCA registration number is 626349 and its address is Suite D2 Joseph’s Well, Hanover Walk, Leeds LS3 1AB. Product Partnerships Limited’s permitted business is to act as a Principal for a network of Appointed Representatives who arrange regulated credit facilities for customers who are purchasing goods from them.
Otovo Limited acts as a credit broker not a lender. We can only introduce you to Humm Group Limited (FRN: 954478) who may be able to offer you finance facilities for your purchase. We do not receive any commission for introducing customers to Humm Group Limited. You may be able to obtain finance for your purchase from other lenders and you are encouraged to seek alternative quotations. If you would like to know how we handle complaints, please ask for a copy of our complaints handling process. You can also find information about referring a complaint to the Financial Ombudsman Service (FOS) at (FOS) at financial-ombudsman.org.uk
Representative Example: For example for a PV solar system that costs £5,001 the monthly payment for a 4 year loan where the interest rate is 9.99% and the APR is 10.45% is expected to be £126.80 and the total interest paid over the entire period of the loan is expected to total £1,085.52.