Tuesday, March 28, 2017

Green Energy !!! My complete Solar Update

After planning for a couple of years I called all of the major Solar solutions providers in Long Island and got their estimates. One of them was an acquaintance; the three major providers reviewed my house, only one climbed the roof and sent an surveyor to get data for the best system. Unfortunately all three proposed solutions made most money while I received a tiny insignificant benefit based on the ROI calculations, clearly in-conflict of my interest but in-favor of exploiting Long Island homeowners. I started designing my own solution; I was unsure about the actual inverter so after a brief research I decided an hybrid inverter will be best for my house. I compulsively purchased the Voltasol HYBRID 3KW SINGLE PHASE SOLAR INVERTER HSI3000 48VDC

Only after receiving it, and trying to test it I realized that this was not to be used in US as it was a 240v single pole unlike the US 240v from 2 poles; the vendor didn't mention that after I specifically asked if this will work in US !!!

Please be aware of this brand, they sell as Voltacon and Voltasol - these are not to be used in USA no matter what they tell you!!! Unless its specifically available for the US 240v standard which is 2 pole !!!

I tried their support, requested technical support and they were rude and unhelpful. STAY AWAY from this brand !!!

After this initial failure I started looking at the FRONIUS brand, and purchased two models - the Fronius IG Plus @ 3.8 and 10.00.

The feature that Fronius presented was the world class and well established Tech Support center in the USA !!! Their support engineers were extremely helpful to a novice like me !!! Without their support I wouldn't be able to get this system up and running !!! Fronius also had well integrated reporting system with the LAN connected (wifi or wired). I was able to get help from a local electrician and install the two inverters.

The PVs were more challenging, as the two main system were mono and poly - I decided to get 10X LG265S1c-A3, 30 SolarWorld SW265W in Poly and 30 Cynergy 320 in Mono. A total of 20,200K in PV power but only 13.8K in Inverter capacity; this was done deliberately as several of the vendors that I invited for proposal suggested that I will have shady areas on my roof as I live in a area of the North Shore of Long Island with many tall trees surrounding my house. The additional PV are compensating as the Sun moves from EAST to WEST; so far the most I have produced is 73 KWh on a single day; the fall and early winter were not great for Solar power.

I also get the PSEG LI net metering application submitted and my smart meter was installed within a week while I need to complete the electrical certification and test the system. The Net Metering is a necessary evil !!

This is the front view while there are additional 3 sections not visible on this picture. 

Here is the full roof view 

Here is the electrical wiring of the PV to the Inverter !!!

I loved the entire learning experience; I appreciate everyone who helped and provided guidance !!! I already produced over 13.34MWh (mega watt) of power as of March 28th 2017!!! Saved 181 trees, and more than a ton of CO2 was diverted !!! 

Wednesday, January 4, 2017

Solar is the way to go !!

I am still trying to optimize my system, here are some charts from PVOUTPUT. By the way PVOUTPUT is really an awesome tool.

check my site http://pvoutput.org/list.jsp?id=52505&sid=47739

I have two inverters but I have added extra PVs to compensate for the low sun light and the moving of the sunlight from EAST to WEST every day makes these systems less efficient. Also the cloudy and rainy days are pretty bad day for Solar power, obviously !