High Power Home

Solar installations for domestic residential properties are growing in size, so we've put together some new category solutions, high and low power home so that we can differentiate the types of properties we deal with. Already it's common for 7kW or 10kW systems on large homes. We do have one customer however, with a modest one-bedroom house, newly built, all-electric with 14kW! Utilising his barn/workshop roofs, as well as the east and west roofs on the main house.

We are starting to utilise fields that are part of the 'curtilage' of a home, and when we do this, we can get some 25kW or more 'behind the meter'. You may never pay an energy bill again, especially if you use a heat pump for heating. At this scale, it's worth thinking about battery storage, and there are some great systems around with a lot of choice in terms of manufacturer and operational capability. The maximum solar output? Well, you can go as large as you wish – with caveats.

Essentially one is restricted by two things:

1. The capacity of the cables to your home, typically 60 or 80A, and

2. The rather outdated concept by Guernsey Electricity that at 25kW and above an additional charge is made.

There are ways around this which include limiting your output to 25kW and topping up batteries, heating up hot water storage, heating central heating buffer tanks or even producing hydrogen. In other words, you use excess energy to do other things.

Visit our projects page to see our past installations.