DC changeover switch

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  • Isetech
    Platinum Member

    • Mar 2022
    • 2274

    #31
    Originally posted by Dave A
    This is the reason I haven't put in solar panels for my inverter setup yet. With eThekwini's pricing structure, my utility bill will go up (quite significantly) rather than go down. Seems the safe solution is to put your geyser on solar as this doesn't carry the same prohibitive penalty.
    Apparently the size of the inverter will determine your "tax" or "fee" that will be added to your electricity account, not the amount of solar. At this point it is just ramble.

    There is a ramble about a few other things that are likely to change in the next 5 years, it is going to put a few DIY installation in a bit of of spot. The green card is certainly not going to cut it.

    Trying to sell your property without all the correct documentation and certification for your installation is also going to turn a few systems into lead weights.

    I think the introduction of design certification and installation compliance should heave been introduced a long time ago.
    Comments are my opinion, unless regulations are attached to support the comment. This is social media, not a court room.

    Comment

    • Isetech
      Platinum Member

      • Mar 2022
      • 2274

      #32
      We were taking about the same thing this weekend. Do we rather fit an 8KVA unit and additional panels and only one battery, increase the thermostat temp.

      The problem is you cant hide the panels, google maps if going to expose all the non registered systems. People think they are going to drive around looking for properties with panels, so they are actually trying to install them out of sight, I not joking.

      It is actually a lot easier than that, the average consumption of a house is X amount, if not within a certain range, your electricity bill will be flagged as abnormal especially if you live in a upmarket area, were you can afford a solar system. Then a quick google search under maps and bingo you bust.

      The big question is what will the penalty/fine be for not registering your system, the amount they lost in venue?

      It is going to be interesting to see where this goes in the future.

      One of the reasons I am looking into the Sunsynk unit, it could at least give you a little relief being a bi directional unit. IF you have a backup system you not only going to pay the price, loose.
      Comments are my opinion, unless regulations are attached to support the comment. This is social media, not a court room.

      Comment

      • Isetech
        Platinum Member

        • Mar 2022
        • 2274

        #33
        An average 3 bedroom house uses around 28-30 KWH per day, in area I live, the average bill is around R1500 - 2000 per month electricity only. If you have had a well designed system, replaced all your appliances and fitted LEd lights, bought a gas stove, your bill should drop to around R500. The part that will catch you, is not the drop to R500, it will be the 6 month actual reading compared to the average.

        6 months = R12000.00 estimate. Actual after 6 months of the system installation, R3000.00 you dont think a little red flag is going to pop up.

        Now imagine the person paying in excess of R10 000 a month, who blows R500k on a system to drastically reduce the bill, do the maths.

        Nothing is free in life, someone must always pay. The more you pay the more the free loaders rely on your support
        Comments are my opinion, unless regulations are attached to support the comment. This is social media, not a court room.

        Comment

        • GCE
          Platinum Member

          • Jun 2017
          • 1473

          #34
          PE has been pretty open about where and how they want to go - Seems like NERSA is going to insist on Time of Use tariff for domestic in SA
          Panels and Batteries will play and important role in reducing the cost of electricity

          As you can see from the rates pasted below peak times you get hammered on the rate - You just need to move geyser etc out of peak and let the battery supply your evening usage .
          The net billing ( dredit amount ) is well below what you pay

          I think it is fair as the municipalities need to maintain the network and by using your excess generated they can effectively sell it on without having to buy from Eskom

          NMBM Rates for
          SMALL SCALE EMBEDDED GENERATION 2021/22

          Total
          VAT Incl.

          Extra Low Voltage (ELV) Time-of-Use Tariff - 230 Volts
          Basic Charge R/Month 352.84
          Winter
          Energy Charge Peak R/kWh 5.66
          Energy Charge Standard R/kWh 1.91
          Energy Charge Off Peak R/kWh 1.16
          Summer
          Energy Charge Peak R/kWh 2.03
          Energy Charge Standard R/kWh 1.48
          Energy Charge Off Peak R/kWh 1.04
          Net Billing– Extra Low Voltage Time-of-Use Tariff
          Winter
          Energy Charge Peak R/kWh 3.29
          Energy Charge Standard R/kWh 1.06
          Energy Charge Off Peak R/kWh 0.61
          Summer
          Energy Charge Peak R/kWh 1.13
          Energy Charge Standard R/kWh 0.80
          Energy Charge Off Peak R/kWh 0.54

          SSEG Support Charge R/month 88.22

          Comment

          • Isetech
            Platinum Member

            • Mar 2022
            • 2274

            #35
            We still live in the dark ages, with old disk spinning meters. That means they will have to replace all the meters. That would be a nice contract to supply and install new meter, worth a ton of cash, if you get paid.
            Comments are my opinion, unless regulations are attached to support the comment. This is social media, not a court room.

            Comment

            • Isetech
              Platinum Member

              • Mar 2022
              • 2274

              #36
              It is going to be tricky designing the system to be cost effective.

              Batteries are going to become an import component in your system.
              Comments are my opinion, unless regulations are attached to support the comment. This is social media, not a court room.

              Comment

              • GCE
                Platinum Member

                • Jun 2017
                • 1473

                #37
                Originally posted by Isetech
                The problem is you cant hide the panels, google maps if going to expose all the non registered systems. People think they are going to drive around looking for properties with panels, so they are actually trying to install them out of sight, I not joking.

                .
                During a discussion on the non registering of PV systems it was brought up that at the start of the drought in PE they used Google with AI software to idenitfy swimpools and dams and match to addresses and accounts - The feeling was that very little work needed to be done to use the same system to search for PV .

                Comment

                • GCE
                  Platinum Member

                  • Jun 2017
                  • 1473

                  #38
                  Originally posted by Isetech
                  We still live in the dark ages, with old disk spinning meters. That means they will have to replace all the meters. That would be a nice contract to supply and install new meter, worth a ton of cash, if you get paid.
                  Should have mention earlier - PE when you register the pv system with municipality as required by NERSA , the owner gets an invoice of R 6,5K to have a 4 quadrant meter fitted.

                  Comment

                  • markthespark
                    Full Member

                    • Jul 2015
                    • 52

                    #39
                    Hi Derlyn
                    I have an old set of lead acid batteries in operation but have bought a new AGM set which I don't want to connect together with the old set. That changeover switch which Isetech has suggested is perfect!
                    " I'd always rather be on the golf course!! "

                    Comment

                    • Derlyn
                      Platinum Member

                      • Mar 2019
                      • 1748

                      #40
                      Originally posted by markthespark
                      Hi Derlyn
                      I have an old set of lead acid batteries in operation but have bought a new AGM set which I don't want to connect together with the old set. That changeover switch which Isetech has suggested is perfect!
                      Understood, my brother.
                      Keep well, daar innie Kaap.

                      Comment

                      • Derlyn
                        Platinum Member

                        • Mar 2019
                        • 1748

                        #41
                        Originally posted by GCE
                        PE has been pretty open about where and how they want to go - Seems like NERSA is going to insist on Time of Use tariff for domestic in SA
                        Panels and Batteries will play and important role in reducing the cost of electricity

                        As you can see from the rates pasted below peak times you get hammered on the rate - You just need to move geyser etc out of peak and let the battery supply your evening usage .
                        The net billing ( dredit amount ) is well below what you pay

                        I think it is fair as the municipalities need to maintain the network and by using your excess generated they can effectively sell it on without having to buy from Eskom

                        NMBM Rates for
                        SMALL SCALE EMBEDDED GENERATION 2021/22

                        Total
                        VAT Incl.

                        Extra Low Voltage (ELV) Time-of-Use Tariff - 230 Volts
                        Basic Charge R/Month 352.84
                        Winter
                        Energy Charge Peak R/kWh 5.66
                        Energy Charge Standard R/kWh 1.91
                        Energy Charge Off Peak R/kWh 1.16
                        Summer
                        Energy Charge Peak R/kWh 2.03
                        Energy Charge Standard R/kWh 1.48
                        Energy Charge Off Peak R/kWh 1.04
                        Net Billing– Extra Low Voltage Time-of-Use Tariff
                        Winter
                        Energy Charge Peak R/kWh 3.29
                        Energy Charge Standard R/kWh 1.06
                        Energy Charge Off Peak R/kWh 0.61
                        Summer
                        Energy Charge Peak R/kWh 1.13
                        Energy Charge Standard R/kWh 0.80
                        Energy Charge Off Peak R/kWh 0.54

                        SSEG Support Charge R/month 88.22
                        Gonna be interesting to see how they gonna get the above right.
                        All the meters will have to be extremely smart and I cannot see that happening before 2026/7.

                        Comment

                        • GCE
                          Platinum Member

                          • Jun 2017
                          • 1473

                          #42
                          Originally posted by Derlyn
                          Gonna be interesting to see how they gonna get the above right.
                          All the meters will have to be extremely smart and I cannot see that happening before 2026/7.
                          They are being and have been installed in PE for the past couple years - I had installed in 2015 when I first installed PV at the office
                          In PE you have a 4 quadrant meter installed and they give you access on the system to be able to check your readings daily
                          All operates via GSM

                          Comment

                          • Isetech
                            Platinum Member

                            • Mar 2022
                            • 2274

                            #43
                            Originally posted by GCE
                            They are being and have been installed in PE for the past couple years - I had installed in 2015 when I first installed PV at the office
                            In PE you have a 4 quadrant meter installed and they give you access on the system to be able to check your readings daily
                            All operates via GSM

                            Electronic metering and time of tariff usage has been around for a long time, landis and gyr were the pioneers and sometime still used in commercial and industrial applications. trying to get support from them is like dealing with a fibre serve provider

                            It use to be a money for jam service companies offer. They fit the meter get your reading sent to their office flip it and send it back to you at a fee, maybe throw in some power factor correction to make a few extra bucks. We were doing it back in 2004.
                            Last edited by Isetech; 12-Jul-22, 07:53 AM.
                            Comments are my opinion, unless regulations are attached to support the comment. This is social media, not a court room.

                            Comment

                            • Derlyn
                              Platinum Member

                              • Mar 2019
                              • 1748

                              #44
                              In our valley, we still live in the dark ages. Anyway, the dark ages are quickly returning for the whole country.

                              Comment

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