Readit NewsWe’re living in a big river valley where we have fog from October until March. On some days in November the fog is so dense that the whole system does not produce any kind of energy. On the other days the produced kWh are enough to charge the battery.
We have a heat pump (extrem efficient), servers, one electric car, etc which consumes all together around 13MWh per year. The solar system produces around 27.5MWh. Most of the energy gets fed back into the grid.
We’re currently investigating to connect the neighbour houses physically to us. But that takes even more time here :-(
Took me 1-2 month planning and then 3 month building it alone nearly each day. Sept 2023 til Xmas 2023. Got all the hardware from a PV dealer friend on his purchase price level. Even 24 panels I have put myself alone onto the roof. With two persons it was a bit better.
I've got: 420w x 71 Trina solar panels and two SolarEdge inverters. SE10K Hybrid and a SE17k. Also a 24kWh BYD LFP battery.
All prices without state funding: Offers from local installers for 56*410W Panels without battery were around 65k CHF.
I've paid now 44k CHF including every kind of cost associated with building it.
Should write a blog post about it :-)
Next project is a solar fence with 6kWp.
Remote: Yes, occasional travel within CH,DE to the office possible
Willing to relocate: nope
Technologies: 25 years in e-commerce, Golang, PHP, JavaScript & TypeScript, Kubernetes, MySQL, MongoDB, Magento, SolarEdge(ModBus). Does not need to be a dev job, can also be consulting/team lead.
Résumé/CV: on request / confidential
Email: kontaktcjs at gmail dot com
A typical grid-tied home solar system has 3 big areas of component costs:
1. The actual solar panels.
2. The thing that mounts the solar panels in place (called racking)
3. The things that turn the solar panel's electricity into electricity that can be used in your home and by the grid. Typically inverters and wiring.
The good news is that you can price this all out yourself, to get an idea of what your system SHOULD actually cost. Then you could theoretically do it yourself, or be a more informed consumer when shopping around to have someone do it for you.
I haven't pulled the trigger yet, but I've been planning, revising and tracking prices on a DIY install for the past couple years.
Here are some of the resources I like:
1: Unbound Solar is a good resource for ready-to-install DIY kits. Their kits are a good resource for "this just works" - and you can then price out individual components as-needed. - https://unboundsolar.com/shop/solar-kits?product-category=gr...
2: For buying actual panels, I like A1 solar. They seem to have the best selection/pricing I've found: https://a1solarstore.com/
3: OpenSolar is a free tool designed for solar installers, but available to DIY'ers. It lets you specify your panels, racking, inverters etc., and then lay them out no your roof or the ground. https://www.opensolar.com/ - It's very likely the tool that the contractors you're getting bids from are using.
The last bit of info I'll share is that in general, microinverters don't make sense from a cost/benefit standpoint. Panels have gotten really cheap, microinverters haven't. You're probably better off adding more panels with a traditional inverter system vs. paying for microinverters to get marginal efficiency gains from a smaller number of panels.
one minor thing: I've skipped using build tags for integration tests because those tests will be out of sync one day with your main code, even with Goland (?).
Instead I use the usual test and check if an environment variable is set, if not, then
t.Skipf("env var %q not set, skipping integration test",envVarName)
func init() { flagIntegration := flag.Bool("test.integration",false,"run int tests") }
$ go test -v -test.integration
We used it very often a couple of years ago. Will try hurl.