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Solar PV & Battery Storage Case Studies

Real renewable energy projects designed and installed by Green Energy Systems across Hampshire, Berkshire, Surrey, Wiltshire and the surrounding areas.

Every property is different. These case studies show how carefully designed solar PV, battery storage and energy management systems can reduce grid electricity use, improve energy independence and deliver long-term financial savings.

 

Our case studies include system design details, annual electricity consumption, installed equipment, performance results and expected return on investment.

Domestic Solar PV & Battery Storage Case Study

13kWp Solar PV System | 40kWh Battery Storage | 8kW Single-Phase Inverter

A high-consumption domestic property using 13,235 kWh of electricity per year. Green Energy Systems designed and installed a solar PV and battery storage system to significantly reduce grid reliance, improve self-consumption and maximise long-term savings.

Annual electricity use: 13,235 kWh

Solar PV array: 13 kWp

Battery storage: 40 kWh

Inverter: 8kW single-phase

Estimated result: 62% reduction in grid electricity use

Installed by Green Energy Systems Ltd — MCS certified, RECC member and fully insured.

Project Overview

This domestic solar PV and battery storage project was designed around high annual electricity consumption, improved self-consumption and long-term reduction in grid electricity use.

Annual Consumption

13,235

kWh per year

Solar PV Array

13 KWp

Battery Storage

40 KWh

Result

62% reduction in grid electricity use

The Challenge

The property had high annual electricity consumption of 13,235 kWh, making grid electricity costs a significant ongoing expense. The customer wanted to reduce reliance on imported electricity, increase the amount of solar energy used on site and improve control over when stored energy was used.

The Solution

Green Energy Systems designed and installed a 13kWp solar PV array with 40kWh of battery storage and an 8kW single-phase inverter. The system was specified to maximise solar self-consumption, store excess generation for later use and reduce the amount of electricity imported from the grid.

Results

The system was designed to deliver a significant reduction in grid electricity use by combining solar generation with battery storage. This allowed more of the electricity generated on site to be used within the property rather than exported immediately.

Grid Electricity Reduction

62% reduction

Annual Consumption

13,235 kWh before installation

System Capacity

13 kWp PV with 40 kWh battery storage

Thinking About Solar PV or Battery Storage?

Green Energy Systems designs and installs solar PV, battery storage and energy management systems for domestic and commercial properties.

© 2026 Green Energy Systems Ltd. All rights reserved.

MCS Certified | NICEIC Approved | RECC Member

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