Diverting excess generation to immersion heater

[e3120]

This is a question about a possible way to reduce the load on your relays, would a relatively small battery storage system as a buffer, be better so the draw is active when the batteries (the relay switches at trigger) are at say 80% full and stops when they are at say 30% empty? The bigger the battery the less often the relays have to trigger. The batteries have other benefits also?

I'm not sure if it's the switching or continuous running that knackers the SSRs, I think the latter. They get hot, deform and fail within a day or 2, sometimes to on I will monitor if it could be the switching, which could be reduced, at the expense of harvested power.

Storage heaters

The advantage of centralised storage is that it's taken to where it's needed, as and when, and using a thermal store makes it available for hot water (but not exclusively so).

 

[Still Farming]

Or even easier just switch all electric heaters etc on when very windy ?

 

[Dave645]

I'm not sure if it's the switching or continuous running that knackers the SSRs, I think the latter. They get hot, deform and fail within a day or 2, sometimes to on I will monitor if it could be the switching, which could be reduced, at the expense of harvested power.

The advantage of centralised storage is that it's taken to where it's needed, as and when, and using a thermal store makes it available for hot water (but not exclusively so).

Looking at the relays on Amazon and the massive heat sinks some have, its likely the size of live load would be the first point to check, not the switching frequency.
Hope you find your solution.