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I've been soaking up as much information as I can on this forum - many thanks to the community! I live where it costs me $0.17 per kwh (thank you Duke Energy...) and I am trying to get a handle on the financials involved. A Tier 1 system can be no more than 10kw (or 12kw of panels using the 120%...

Saw these panels advertised for sale. The manufacturer label says ETL certified and "conforms to ... (various UL standards)" Does this really mean anything for US use / obtaining permits / etc?

New to us house has 10 solar pool heater panels on the roof as shown in the drawing. They all have to come down so the new roof can go on. No better time than now to correct any errors in the system. I already know that there are no back flow preventers in the supply riser so I plan to add one...

Looking at the Growatt 2200TL2-HV solar pump inverter manual they refer to 220v 1 Phase and 3 Phase. Is this just different terminology? I will be running a US split phase 220v pump. Do I need to find another box?

Early design phase for my grid tied project. Wondering which smart phone measuring tool folks recommend? I want to map out my roof and need specific dimensions & angles. Would prefer not to have to do it the old fashioned way...

In the early planning stages for roof top solar. I have a pitched roof with new architectural composite shingles. Looking at the Ironridge installation guide for the Flash Foot2 mounts, it has you take the 9 inch wide by 12 inch long flashing and slide it up underneath 2 courses of shingles...

Been trying to read everything prior to getting to the detailed design phase. Planning to run a PV array to power a swimming pool variable speed AC motor through a Growatt solar pump inverter. I know best practice (and preference) requires a DC breaker to disconnect the PV array from the...

I have a flat section of roof that is plain old hot mopped roll roofing. I want to install the panels at a 26 deg angle. I've found a few mounting systems that look to be very expensive and hope that there's something else out there? This will be an off-grid system just to run a pool pump so I...

I have two 8D batteries for starting and six 8Ds for the house. I'm happy to say that they're all in need of replacement..... ugh! It's now cheaper for me to replace the house 8Ds with LIFEPOs than AGMs. 12V 280Ah Eco Worthy units are now just $500 each as opposed to the best price I could find...

Wondering what to use to meet the ABYC requirement of an audible alarm before the BMS will disconnect your LiFePO4 batteries? Would a simple low voltage alarm suffice or do we have some new products out there to meet this requirement? Would be nice to have something more than a dumb threshold...

During COVID I had to replace the 8 6V GC2 batteries in our RV. The only ones I could get at the time were FLA units to replace the solid-state units that had expired. Repair shop installed the new units and I set the inverter / charger profile to Lead Acid battery type. All is good..... until...

Just getting started in the solar world. I've got a long electronics repair & computer science background plus many years of DIY plumbing and electrical work behind me so I'm not completely clueless (I hope). We're buying a house in an area served by Duke energy, and that means higher rates than...

One of the main factors (to me) in the solar equation is the cost of installation for a grid-tied system. Since FL requires these systems to be installed by a licensed contractor, is it realistic to think I can save money purchasing a kit system and hiring the installation? For example - this...

Read through the earlier threads and the problems described with the AIMS charger / converters. Does anyone know if this has been resolved? Looking for a decent 24V charger for a marine application. TIA.