Goods News for my DIY ESS - Energy Storage Sytem : Another step reached with 500 EUR of Savings logged by the online portal as of this weekend :)
Even if I do not care about ROI really, I can now say that 1/4 of the money spent to build my DIY ESS (3,000 EUR) has been payed back in Energy Bill Savings (720 EUR) over the 2 years and 9 months : 720 / 3,000 = 24%
Using cheaper Electricity rates to Charge at night (TOU) during winter, and Solar Surplus during the day, my Energy Storage System automatically tries to match the Power Consumption at home, in conjonction with Solar Generation when available, to have a Net Usage (Home Usage - Generated Power) close to 0W : No Import & No Export = Self Consumption of Solar Production
EnergyHive Free Online Portal enables instructive and user friendly graphs for real time and historical data display
I often checks that my ESS is working fine during the day, using my iPhone, Mac, PC on http://wattson.energyhive.com/dashboard/diyesskit
Power Graph
Energy Graph
Energy Generation Chart : Imported vs Generated Energy
Another real time way of checking what's going on is through a Logitech Broadcaster Webcam displaying Live on Ustream 2 Wattson units : one with Generation (Solar + ESS), the other with Net Usage (Usage - Generation) : http://www.ustream.tv/channel/chris75sf
Since I started logging usage + generation data with the EnergyHive hub in June 2014, it says 502 EUR has been saved on Imported Electricity
But my DIY ESS has been running with Solar Panels since July 9, 2013, and the additional savings figure for the first period should be close to 11 x 20 EUR/month = 220 EUR
So the total amount of Energy Saved on my Utility bill is today around 720 EUR ! after 2 years and 9 mobths of service
And since the price per kWh of Electricity is always going up, the savings will continue to increase faster with time !
And since the price per kWh of Electricity is always going up, the savings will continue to increase faster with time !
Even if I do not care about ROI really, I can now say that 1/4 of the money spent to build my DIY ESS (3,000 EUR) has been payed back in Energy Bill Savings (720 EUR) over the 2 years and 9 months : 720 / 3,000 = 24%
Using cheaper Electricity rates to Charge at night (TOU) during winter, and Solar Surplus during the day, my Energy Storage System automatically tries to match the Power Consumption at home, in conjonction with Solar Generation when available, to have a Net Usage (Home Usage - Generated Power) close to 0W : No Import & No Export = Self Consumption of Solar Production
EnergyHive Free Online Portal enables instructive and user friendly graphs for real time and historical data display
I often checks that my ESS is working fine during the day, using my iPhone, Mac, PC on http://wattson.energyhive.com/dashboard/diyesskit
Power Graph
Energy Graph
Energy Generation Chart : Imported vs Generated Energy
Another real time way of checking what's going on is through a Logitech Broadcaster Webcam displaying Live on Ustream 2 Wattson units : one with Generation (Solar + ESS), the other with Net Usage (Usage - Generation) : http://www.ustream.tv/channel/chris75sf
More info on my DIY Energy Storage System here : http://www.diyesskit.com or http://www.storeyourenergy.com
No comments:
Post a Comment