3 ms·

50 years is almost new. Most 100 year old terracotta tile are still on the original set, and slate often lasts 200. Where roofs are replaced, aside from storm

50 years is almost new. Most 100 year old terracotta tile are still on the original set, and slate often lasts 200. Where roofs are replaced, aside from storm damage, it's most common for that to be down to having got rot in the woodwork than fault with the tile. I suspect a fair few are down to iffy sales tactics from dodgy builders. (i.e. get someone out to fix the chimney flashing "oh, major problem you need a whole new roof...")

deleted 7y ago
[deleted]
moneytide1 7y ago
A relatively routine roof replacement required because it is now expected to serve more than one purpose (simultaneous weather - proofed shelter and PV surface area) could be justified, especially if the entire neighborhood utilizes its existing local grid because the entire street of individually owned Powerwalls is one large shared, connected, metered (people with high energy needs could still run welders and power tools that pull from other Powerwalls), software driven reservoir: Each existing home (even ones built in newly minted neighborhoods) would still be connected in parallel. It's the nearby 70-150kV subtransmission relay station historically feeding that parallel bank of homes that would become inactive - ironically bypassing the Nikola Tesla prompted long distance HV amperage flow from remote generation sources. AC implies spinning dynamos (loud flywheel momentum), and PV-to-battery is solid state, with high frequency silicon carbide switching (quiet). Classical home 13kV transformer bypassed or replaced with a small DC boost to launch amperage across the hundreds of feet of a neighborhood's acreage. Typical loads could be balanced even if a few people want to weld or smelt metals during a bright sunny day (especially summer solstice). As a comment above pointed out, the solar capacity would decay over time, but since there is a local grid reservoir buffer - the reduced capacity PV over time can mean the high quality glass protection can be kept even when cells under them are down below 50%. Such a roof would be contributing less to the reservoir than neighbors feeding the same grid with newer solar roof replacement. The user can be paid for their generation if they use less than they produce, incentivizing low noise, subtle generation sources (charging your powerwall with an exercise bike like Jaimie Mantzel, adding your electric vehicle(s) charge reservoir to the neighborhood grid if next day commute will mean you're parked near other solar roofs that will top you off until ready to return home - transporting and trading energy).

deleted 7y ago

[deleted]

moneytide1 7y ago

A relatively routine roof replacement required because it is now expected to serve more than one purpose (simultaneous weather - proofed shelter and PV surface area) could be justified, especially if the entire neighborhood utilizes its existing local grid because the entire street of individually owned Powerwalls is one large shared, connected, metered (people with high energy needs could still run welders and power tools that pull from other Powerwalls), software driven reservoir: Each existing home (even ones built in newly minted neighborhoods) would still be connected in parallel. It's the nearby 70-150kV subtransmission relay station historically feeding that parallel bank of homes that would become inactive - ironically bypassing the Nikola Tesla prompted long distance HV amperage flow from remote generation sources. AC implies spinning dynamos (loud flywheel momentum), and PV-to-battery is solid state, with high frequency silicon carbide switching (quiet). Classical home 13kV transformer bypassed or replaced with a small DC boost to launch amperage across the hundreds of feet of a neighborhood's acreage. Typical loads could be balanced even if a few people want to weld or smelt metals during a bright sunny day (especially summer solstice). As a comment above pointed out, the solar capacity would decay over time, but since there is a local grid reservoir buffer - the reduced capacity PV over time can mean the high quality glass protection can be kept even when cells under them are down below 50%. Such a roof would be contributing less to the reservoir than neighbors feeding the same grid with newer solar roof replacement. The user can be paid for their generation if they use less than they produce, incentivizing low noise, subtle generation sources (charging your powerwall with an exercise bike like Jaimie Mantzel, adding your electric vehicle(s) charge reservoir to the neighborhood grid if next day commute will mean you're parked near other solar roofs that will top you off until ready to return home - transporting and trading energy).