I have been running a small solar system for nearly 6 years. This system has worked well, charging batteries for power tools, batteries for electric bikes and a railway track. My shed however also has a mitre saw which draws up to 1400w and I want to buy a bench drill press. To use the mitre saw I have been carrying it up to the house.
The pictures show my rather cluttered and very simple off-grid set-up for my shed. Yes I know the wiring needs to be redone. It ended up like that because when I built it, it worked and I didn’t want to disturb it, in case it stopped working. My current systems consists of:
2 x 12v Alphaline XV24 MF batteries (wired in parallel)
1 x Steca SCC Solsum 10.10F 10a
1 x Sterling power inverter
4 x Maplin TPS-102 12v 48ah capacity solar panels
I want to upgrade the system and to start learning about off-grid technologies. Our family lived in a van for a couple of years which started an interest in off-grid living and a desire to maybe do it again.
So, I am hoping to build a system that will run the 1400w mitre saw. I have done various calculations and realised that I am heading towards a large system in which case why not go further and prep a system for a small house with plenty of upgrade possibilities.
- Purchase a 100 watt glass solar panel – but how can I tell what is a good panel and what is cheap? Also can I install the new panel and have it run alongside my old panels (they run in parallel at the moment)
- Add 2 x Alphaline batteries
- Increase solar array to 4 panels in total.
- Purchase one 40 amp MPPT Controller
- Purchase second 40 amp MPPT Controller
- A 3000w power inverter
It might be a long road to get there but in this way I can keep the current system running until I get to step 4 or 5. At this stage I might need to bite the bullet and do 4 and 5 together.
Can I introduce wind power into this system? Would you suggest any changes? I would like to get something running the saw as soon as possible, is there any thoughts on building a system that would allow this please?
My first job is to tidy up the wiring and then build.
Thanks for reading.