#Solar production at winter solstice exceeds my expectations, a whopping 19.5kWh given it was hazy 10-11am. This is out of a 6.4kWp PV installation in Sofia, Bulgaria.

Test drove the new all electric Renault Megane e-tech today. I like it better than the VW ID3. Overall an impressive EV, but needs some “getting used to”.

This guy showed up, and solar production dropped to zero last couple days. My panels aren’t easily accessible (rooftop) so that I could remove the snow. Enjoying the winter anyway, forecast is that snow will melt in a day or two.

The solar cell is effectively a diode, running current through it causes it to heat. Wondering why isn't this effect used by inverters to de-snow panels in the winter? #solar

Node-Red dashboard to control the BYD PV storage battery behavior over Modbus TCP. Storm is coming and power failure is likely? No problem, force-charge the battery, including from grid, and put it on hold for emergency power backup purposes. Neat 🙂

I didn’t realize location tracking and precise location were enabled by default in Twitter app, turning both off and feeling bad about this privacy invasion going on unnoticed for so long by me

Now that the BYD battery is here, I finished the automatic switchover box. It physically disconnects the house from the grid and instructs the inverter to start in island mode. Upon grid availability again, the inverter monitors its stability and switches back to grid-tie mode. First time building such a distribution box, I realize the…

Impressive PV production today considering it is November. Managed to squeeze out 25kWh or 86% of our consumption today is self-generated.

@MZapryanov Made this Excel calculation around the guaranteed 23.1 MWh throughput vs different DoDs, it seems the golden spot is between 60-80% for the desired longevity, without exceeding reasonable lifetime expectations. I hold no hope the battery will last 16 years 🙂 (2/2) @MZapryanov A good takeaway from the diagram you posted is that the…

The @BYD_BatteryBox HVS 7.7kW battery for my solar system arrived today, the order took five months. Installed it myself, that took less than two hours. Still need to put the cables into a channel. All worked right away, slightly surprised 🙂

Excellent PV production from my 6.4kWp installation, almost 22kWh for the day, including the EV range to cover my commute. #solar is great

The @froniussolar Ohmpilot working hard to divert every excess PV watt to a hot water tank on an averagely overcast day (reddish color on the below chart), impressive piece of engineering.

Received a @froniussolar Ohmpilot today. It diverts the available PV excess to a hot water tank (or any resistive load), in my case 0-2400W stepless regulation. Installation was trivial. The package did not include a PT1000 temp. sensor,ordering one separately for more control

Using Node-RED's node-red-contrib-solar-power-forecast-plus contribution to plot (light blue line) the estimated max PV generation in ideal conditions for my location/panel orientation/time of year; seems pretty accurate so far. Useful to know what theoretical maximum I have.

Installed a DC side surge protection device to my @froniussolar GEN24 #solar inverter. It comes as retrofit option, installs in under 20 min. A lightning strike nearby can induce damaging voltages in the wires from the rooftop panels 30m away, this SPD takes care of such cases

July #solar stats: 69% of our consumption is self-generated. If we had the 7.7Kw BYD battery (on order) installed, that would have been an easy 100% self sufficiency.

The grim reality of buying anything PV related in 2022, see below the response to an inquiry about a order I made couple months ago. Other sites cite April 2023 for the same product, these guys preordered Nov 2021 and “are optimistic” to deliver this September.. crazy times

Fiddling with @solcastAPI; API supposedly provides estimated PV produce based on weather forecasting for a location. Will compare against reality and potentially use to optimize home energy usage planning

Charging an #EV 100% on #solar PV surplus, feels oddly satisfying. @froniussolar

The @froniussolar WattPilot EV charger just arrived. This is the 22kW model, we have single phase installation, so max 7.4KW would be available. Can be configured to only charge using PV surplus, and supposedly works with zero feed-in. I don’t own an EV yet,will rent one to test.

A week on #solar energy, 70% of our consumption is solar-generated. Battery (BYD HVS 7.7kW) is ordered but 6-8 months to deliver, which I am told is “the new normal” Export of energy has been set to 0%, the inverter regulates production to match consumption. It is underutilized for the moment, but things will change…

Quick and dirty dashboard update to show PV generation data from the Fronius #solar inverter API on our Raspberry Pi home automation status display

The @froniussolar #wolar inverter is now powered up and working as expected 🙂 Max load test , 6kW PV generation

The final #solar panels configuration, 18 Q-CELL 355W Not powerd yet, I will do that tomorrow. Hoping no magic blue smoke is generated

My 6kW @froniussolar GEN24 Primo hybrid solar inverter and the DIY automatic switchover box are mounted and wired. Planning on going #solar this weekend 🙂

Woohoo! My @froniussolar Primo GEN24 6.0 kW hybrid solar inverter just arrived 🙂 It took two and half months after the order, so global chip shortages and high demand are affecting this industry as well. If you try to order one today, delivery times are close to a year now.. crazy times

Mounted seven #solar panels on the roof today, 11 more to go 🙂