I have an order in to add 12 solar panels and 4 PW to my existing 44 panels and 2 PW. That is about 4.4 KW added to a ~17 KW spec'd 18 month old install. My goal is to increase energy storage capacity to help with retail arbitrage / cost-savings over a 10 year horizon. Off-grid resiliency for storms and outages as well as reduced wear and tear would be nice perks but not my main motivation.
We live in Oahu, Hawaii and have seen a huge savings from initial Tesla solar system installed about 16-19 months ago. I've calculated the original $50k system will pay for itself after less than 5 years based on our current driving habits with two Teslas.
In 2022 the Tesla app reports we generated 20.94 MWh and consumed 20.32 MWh. From my electric bill I can see that we consumed 1.9 MWh from the grid and sent 1.8MWh to the grid. In Oahu we currently pay $0.41/kwh and NEM pays us back only about $0.10/kwh. The cost of HECO rates have risen 30-40% over the past year alone.
We're looking for a cost effective, relatively simple way to make us of our solar before we give it away to HECO for such a discount. Right now we're on track to owe HECO about $2k for 2023 and we're still pretty restrictive in how we conserve / use energy!
Options include having a third Tesla (we currently drive two to work during daylight hours), adding up to 4 PW, or exploring the path of using a Tesla vehicle battery pack as a DIY PW. The estimate for the solar upgrade from Tesla is another $50k or so. At today's prices, I could buy brand new M3 for significantly less... Let alone build a DIY PW out of salvage Tesla packs...
We live in Oahu, Hawaii and have seen a huge savings from initial Tesla solar system installed about 16-19 months ago. I've calculated the original $50k system will pay for itself after less than 5 years based on our current driving habits with two Teslas.
In 2022 the Tesla app reports we generated 20.94 MWh and consumed 20.32 MWh. From my electric bill I can see that we consumed 1.9 MWh from the grid and sent 1.8MWh to the grid. In Oahu we currently pay $0.41/kwh and NEM pays us back only about $0.10/kwh. The cost of HECO rates have risen 30-40% over the past year alone.
We're looking for a cost effective, relatively simple way to make us of our solar before we give it away to HECO for such a discount. Right now we're on track to owe HECO about $2k for 2023 and we're still pretty restrictive in how we conserve / use energy!
Options include having a third Tesla (we currently drive two to work during daylight hours), adding up to 4 PW, or exploring the path of using a Tesla vehicle battery pack as a DIY PW. The estimate for the solar upgrade from Tesla is another $50k or so. At today's prices, I could buy brand new M3 for significantly less... Let alone build a DIY PW out of salvage Tesla packs...