Comments on: Japan’s Rapid Residential Solar Power Growth

By: Janiceho1019

Janiceho1019 — Tue, 17 Apr 2012 08:55:00 +0000

Sorry, my email is janiceho1019@netvigator.com

Dear Sir,

My name is Janice Ho from in Hong Kong.

I would like to introduce our Solar panels to you. If you or your customers are interested please feel free to contact me at your earliest convenience.I can send you the quotation & brochures are for your references.

I am looking forward to hearing from you.

with personal regards,
Janice
Tel: +852 97533627
email: janiceho1019@netvigator.com

By: Janiceho1019

Janiceho1019 — Tue, 17 Apr 2012 08:52:00 +0000

Dear Sir,

My name is Janice Ho from in Hong Kong.

I am looking forward to hearing from you.

with personal regards,
Janice
Tel: +852 97533627
email: janiceho1019@netviagtor.com

By: ThomasGerke

ThomasGerke — Thu, 05 Apr 2012 22:51:00 +0000

I’ve been thinking about this aswell. Looking at solar-output, wind output and the fact that a EV-sized battery is more than enough to keep a home humming for a few days, is quite exciting.
Considering that industry giants are expanding their battery production capabilities and research efforts like crazy right now… I think there will be cheaper batteries soon.

The battery of the Nissan Leaf is already significantly cheaper than previous batteries. I think it’s in the territory of $350 / kWh and I saw some press release of home use trials with it.

Though one should not emphazise return of investment as the primary factor for energy investments in my opinion. People don’t consider profitability with most of their purchases… otherwise there wouldn’t be SUVs.
My guess is:
When the financial threshold isn’t tooooo high, people will do it simply for being a clean energy pioneer, being independent, sticking it to corporations, doing something about climate change…

By: Bob_Wallace

Bob_Wallace — Thu, 05 Apr 2012 16:46:00 +0000

I’d like to see some financial analysis of adding battery storage to grid-tied system.

A few days ago I ran across the idea of using a power router to purchase power from the grid when prices are low, store it in batteries, and then use it when prices are up and the solar day hasn’t yet started.

Batteries would also store roof-generated electricity for the peak cost hours after the Sun is low.

Batteries are still expensive (for the time being). I wonder if they pay for themselves in a reasonable amount of time.

I wonder if people who live with large peak/off-peak cost differences might find storing “cheap” would pay for itself, even with out solar input.