Tesla unveils a battery to power homes from solar panels
Have just seen this on the news and it could well be something of interest to all those who have solar panels on the roof. It’s certainly new technology that I’m going to watch with a lot of interest. I cut my imported electricity use by more than half since I had my solar panel installation – if I can cut it further then that will be even better!
The Tesla web site has revealed
Energy Storage for a Sustainable Home
Powerwall is a home battery that charges using electricity generated from solar panels, or when utility rates are low, and powers your home in the evening. It also fortifies your home against power outages by providing a backup electricity supply. Automated, compact and simple to install, Powerwall offers independence from the utility grid and the security of an emergency backup.
Lots of questions to ask but this looks like the perfect partner for a home solar panel installation. Most of us are out when the sun is providing us with the best electricity yield and therefore a large part of our solar generation gets exported to the Grid. At night, when the sun has gone we then purchase the electricity back again at higher rates. So imagine the prospect of a device that holds some of this electric back for us to use instead of buying it back when the sun is either in or not brighter enough.
So for now well done to Tesla 🙂
Not the best March but still a good start to the year. Hopefully April, which is usually a good month, will get the average up again!
March 2015 Generation Stats
Month Total: 174.19 kWs
Best day: 10.03 kWs 25/03/2015
Worst day: 1.00 kWs 15/03/2015
Generation per kW/panel: 87.01 kWs
Daily average: 5.62 kWs
The Solar Photovoltaic feed-in tariffs (FIT) will rise on 1st April 2015. This will be in line with inflation based on the Retail Price Index (RPI).
The RPI rate of 1.6% will be applied to the feed-in-tariff payments to solar electricity generators as from the beginning of April 2015.
This will see the top current rate of 48.07 per kW rise to 48.84 pence per kW. The export rate will also increase from 3.39 per kW to 3.44 pence per kW.
These rates apply to the early adopters of Solar PV Generation. View the full tariff table of rates for the Feed-in Tariff Scheme for 1st April 2015 (PV Only).
After the highest January yield so far from my solar system, February 2015 followed with a very good electricity harvest also.
February 2015 Generation Stats
Month Total: 114.75 kWs
Best day: 8.12 kWs 21/02/2015
Worst day: 0.61 kWs 11/02/2015
Generation per kW/panel: 57.38 kWs
Daily average: 4.1 kWs
What could I expect after a record solar power generation year? I would of hoped for a good steady January to start 2015 off… What I actually produced after starting the month poorly on the first day was yet another great month. It was the best January in the four that the solar system has been installed. Is this a lucky month after a great year or maybe it’s solar generation getting better with climate changes – whatever it is I’m very pleased to start the year so well 🙂
January 2015 Generation Stats
Month Total: 83.04 kWs
Best day: 5.90 kWs 19/01/2015
Worst day: 0.14 kWs 01/01/2015
Generation per kW/panel: 41.52 kWs
Daily average: 2.68 kWs
After such a great year in 2014 for solar generation I’ve added another chart to show the yield progression over the twelve months. This eventually lead to my Sanyo panelled solar system achieving the best year to date.
Looking at the year and comparing it with the previous three that I’ve been generating my own electricity, it was only June that stood out with an increase of 28 kWs. February and December also saw an increase. So, although a few record months, but no overall best month or day gave me the best year to date!
December 2014 solar harvesting results and record year confirmed
And as already declared one month early, 2014 has been a record solar harvesting year! On top of this record I have also managed to get a great December too. The system generated more solar electricity than the previous four. OK it was only 6kWs better than 2013, but in a month known for poor returns I’ll sing its praises any way 🙂
December 2014 Generation Stats
Month Total: 66.67 kWs
Best day: 5.50 kWs 03/12/2014
Worst day: 0.07 kWs 26/12/2014
Generation per kW/panel: 33.34 kWs
Daily average: 2.15 kWs
November was a poor month in 2014, the lowest so far. But as mentioned last month, I only needed 37 kWs to make it a record year. And we’ve done it. What’s even more impressive is that there’s still a month of solar harvesting to go 🙂
November 2014 Generation Stats
Month Total: 63.81 kW
Best day: 6.27 kW 04/11/2014
Worst day: 0.01 kW 21/11/2014
Generation per kW/panel: 31.91 kW
Daily average: 2.13 kW