2
votes
2answers
55 views

What factors should I experiment with to improve the performance of a DIY solar hot water system?

Background: Late in the summer last year I finally commissioned a DIY solar hot water pre-heat project. Very simple, drain back, open (vented) tank, PEX coil for a heat exchanger, PEX plumbing ...
7
votes
3answers
320 views

What's a reasonable expectation for efficiency in modern solar panels?

I recently had a solar array installed on my roof with four different sections connected to three inverters - the total array includes 56 panels for a total of 13.44 kW. However, I'm not seeing ...