Cheapest Way to Set Up a Battery and Inverter System in London?

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Asked By TechieNinja27 On

I'm looking for advice on setting up a battery and inverter system in the UK, specifically in London, without involving solar panels. My daily energy consumption is around 16kWh, and I believe I can reduce it to 12kWh with some optimization. I'm currently on an energy tariff that gives me a lower rate overnight, and I want to take advantage of that to save on costs. I'm especially keen to know exact specs and installation costs from anyone who's done this, as I'm hoping to keep total expenses under £500. I'm open to doing some DIY work myself, like wall mounting and cabling, but I'll need a qualified electrician for the connection to the consumer unit. Also, while I'd like an emergency power supply (EPS), it's not a deal-breaker.

3 Answers

Answered By SustainableSam21 On

I snagged a 16kWh Fogstar battery during last Black Friday for £1,399, and it's been fantastic. Pairing it with a Victron Multiplus II inverter has worked wonders for my setup! Just make sure to check that the inverter is G98 certified since that’s a requirement in the UK to ensure safety and compliance with regulations.

EnergySaver88 -

Awesome tip! But can I ask, what did you end up paying for installation?

Answered By DIYMeister99 On

If you're up for it, you can save a ton by doing some DIY and finding a local electrician who can help sign off on the work. Just remember, when choosing your battery, it's wise to go for about 20-30% more capacity than you think you need. This way, you won't constantly drain them to super low levels, which can wear them out faster!

CuriousGeorge43 -

Got it, that makes sense! What's a good way to find a reliable electrician who can help, though? I have no contacts in that area.

Answered By InverterWhiz22 On

Expect to spend around £2k for installing a G98 rated inverter, excluding the batteries. Don't be tempted by cheaper models; they often won't meet necessary regulations. For my setup, I got a Victron Multiplus II and connected it to a bank of Lifepo4 batteries, which works great even with solar! I had an electrician help with the installation for about £500, and I strongly recommend you check the ENA type test register for compliance.

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