Blog - GridFree

Playing Baseball at Night?

The days in summer are long here in Czech, however the days are getting shorter quickly in Autumn. To allow a longer playing activity and to extend the use of the playfield in autumn or in early spring, theBaseball Team PRAOTCI ROUDNICEhas decided to install a night lighting for the field area.

GWL/Modular BMS Basic in Action! 

Check this Youtube video to see how to install theGWL/Modular BMS Basic into a 24V battery pack.

Check these main components used in the set-up:

ELERIX 110 Ah

ELERIX battery holder

GWL/Modular BMS Basic

Overview of the Complete Guides from GWL

In 2020-2021 GWL has published several technical guides to assist our customers. Check these Complete Guides and get the knowledge and know-how to improve your DC-AC solutions.

Use of LiFePO4 Batteries in Ships

LFP and LTO Battery Guide

Battery for Caravans and RV - Guide

Flexible solar panels for boats and yachts

Example reference of the installation ofon the roof of a luxury yacht.

In this installation there are18 pcs of. The total solar power is5.6 kWp.

The installation powers a48V DC installationwith lithium battery and.

With 6 hours of direct sunlight from 9 am to

The Core of the House and The Ready House!

This is one of the photos from the construction of theCzech Sustainable Houses (CSoD) project.

The top photo was takenin first part of 2020, when the core of the house was completed and before.

In early part of 2021, the house has been completed. Now there is a lot of final work needed

GWL/Modular FV Elerix - From the Roof to the Energy Storage

A complete solution using. From the roof equipped with the, to the SOLAR ENERGY HUB that contains theand the Energy storage Cabinet with thebattery pack.

A complete, robust, scalable and reliable solution that can be installed by any ski

The CSoD project – 100% Success in Winter 2021

The photo of thewinter day in January 2021. The sun is shining at the lowest sky position and it is quite cold outside even during the daytime. Yet, even in the deepest winter, theCzech Sustainable House project (CSoD)is full of energy and fully habitable.

Some of the doubters of t

Totally off-grid - fresh water pumping

This photo shows the very first part of the solar installation at theCzech Sustainable House (CSOD)project.

This is a completely off-grid installation oftwo solar panels (36 cells 160Wp), that run the water pump in the drilled well. The main purpose of this installation was to pump th

She is the “Beast” or the “Bestie”

We call her the“Bestie”. The word“Bestie” in the Czech language means the terrible beast. It can also mean a wicked woman.

However in English“Bestie” can also be used as the familiar name for the“best-girl-friend”.

In GWL the&ld

A complete solution from the GWL/Team

This is the work of the GWL/Team. As a part of, the GWL/Team members create a customized solution to help the customer according to his needs.

In this design schematics, a customer is looking for a solution of an off-grid cottage.

Components used: 4x PV solar panels 165Wp, MPP