Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!eternal-september.org!.POSTED!not-for-mail
From: Jeff Layman <Jeff@invalid.invalid>
Newsgroups: sci.electronics.design
Subject: Re: Grand Apagon - Electricity (not) in Spain
Date: Wed, 30 Apr 2025 11:41:19 +0100
Organization: A noiseless patient Spider
Lines: 21
Message-ID: <vusuof$3ntuc$2@dont-email.me>
References: <vuqgef$1of93$1@dont-email.me>
 <mqp11khbm5eoulgl4i7l1ncmm73irtnk5q@4ax.com>
 <6810ef6a$2$2786$882e4bbb@reader.netnews.com>
 <qft11klssklbte9o8mu13o9m8jla77649r@4ax.com> <vusi3d$3lvur$5@dont-email.me>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 8bit
Injection-Date: Wed, 30 Apr 2025 12:41:20 +0200 (CEST)
Injection-Info: dont-email.me; posting-host="512e0594e072b241f91fa538ca91f29f";
	logging-data="3930060"; mail-complaints-to="abuse@eternal-september.org";	posting-account="U2FsdGVkX1/et14Q3PjXEvA1e4KDBUapmbnL2WkRdDk="
User-Agent: Mozilla Thunderbird
Cancel-Lock: sha1:I7VXXpI5JSgt8+ZDnTBIqIBoywk=
In-Reply-To: <vusi3d$3lvur$5@dont-email.me>
Content-Language: en-GB
Bytes: 2106

On 30/04/2025 08:05, Bill Sloman wrote:

> About 40% of new roof-top solar power installations in Australia include
> a Tesla Powerwall (or something similar) to keep the lights on at night.
> 
> It adds appreciably to the capital cost, but pays for itself in a couple
> of years. Australia's feed-in tariffs aren't generous.

Over here in the UK a 13.5kWh Tesla 3 powerwall will cost around £10k 
(includes installation). This (USA) site suggests a payback time of 14 
years 
<https://www.solarreviews.com/blog/is-the-tesla-powerwall-the-best-solar-battery-available#is-the-tesla-powerwall-worth-the-price?>.

This Australian site 
<https://cleannrg.com.au/the-real-cost-of-teslas-powerwall-battery-storage/> 
seems to suggest that a powerwall save A$3000 a year, but the initial 
cost is A$20000. Doesn't that make the payback time 6 - 7 years rather 
than just a couple?

-- 
Jeff