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Joined 7 months ago
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Cake day: January 6th, 2025

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  • Get a larger battery.

    By far the lion share if the savings come from internal usage. Export payments are 20% of so of electricity costs, so you want to be using what you generated.

    I have a 5.4kW array, and a 8.8kWh battery. 15% of the battery has to be reserved, so actual capacity is lower.

    We basically live off grid for 6-7 months, but winter production is so low (aprox 20% of summer ) that it’s hard to even fill up the battery.

    But a larger battery would help for those spring and autumn months when some days are good, some are bad.

    For reference, comercial installation have a 4:1 ratio of battery capacity to production. In my case that would be 20kWh! Or 5 days of average consumption.

    One final thing to say is that our battery system is capped to 3kW. So even when full, if we ask more electricity than that at any point we would be importing.

    What this means is that going gas free is harder, as some appliances (hob, kettle) consume a lot.















  • ARM main business model is the sell of IP. They fully design their CPUs along with a host of surrounding technologies, like the interconnect. In order to prove their design work and are fit for purpose they have to send to TSMC and other fabs. Small customers buy their IP as is and then integrate it onto their designs. Their most expensive license is the Architectural licence. This means they allow the buyer to completely redesign their Chios, while maintaining compatibility with the Software. Large companies like Apple, Nvidia, Amazon, Samsung and others buy this licence and produce chips like the Exynos, or graviton.