solar panels

Off-The-Grid COMET models

Hello! I've been working up some 3D models (using SketchUp) of the COMET as she may end up, or the "end result" models. These are likely to change as the design process continues and ideas solidify, but here was what I first envisioned The COMET to look like. Perhaps the rainwater harvesting system will change, and the solar modules might be in different places or as a separate array that pops up and can move around in order to collect optimum sun, but here's my totally self-contained version of The COMET of the future.

What do you think? Is there anything else that a comprehensive info sheet about the project should include? I need some feedback!

Solar Module Placement

Hello again! I just got some really great questions about the off-grid systems that the COMET will have, and I thought it would be a good time to share some of these infographics and design concepts I've been working on.

Where do you put three 185-watt solar modules on a 16 foot trailer with limited surface area?

Here are some of my ideas:

All-DC Solar Power System in The COMET

Here's a follow up to the last post, where I talked about how to calculate your (kilo)watt usage and shared my own table showing what electricity-using appliances I will have. Here's why that "AC or DC" column is important.

I want to design a PV system for The COMET that is DC-only, and has no AC inverter (which turns the DC power from the panels into the AC power that comes out of your wall sockets). The reason is because of the nature of inverters for PV systems: inverters are the single most expensive component of a PV system. They also are the point at which 20% of efficiency from what the panels are actually producing gets lost. That means it takes 20% of the energy you are producing with your panels to power the inverter. That's a lot of lost energy, especially in a small system! So I am devising a unique system that requires no inverter.