This tutorial covers solar panel arrangements to use at various stages of the game, including the building of the massive, ratio-perfect array from this forum post: https://forums.factorio.com/viewtopic.php?f=5&t=5594
Factorio Guides on Steam:
Factorio Observations, Tips, Tricks & Efficiency: http://steamcommunity.com/sharedfiles/filedetails/?id=661582295
Factorio: How to Build a Main Bus: http://steamcommunity.com/sharedfiles/filedetails/?id=754378586
Tutorial Playlist: https://www.youtube.com/watch?v=FuBaFQ3u1Mg&list=PL4o6UvJIdPNpm9szThfI-2y3Bv0c3rPlB
Factorio is a game in which you build and maintain factories. You will be mining resources, researching technologies, building infrastructure, automating production and fighting enemies. In the beginning you will find yourself chopping trees, mining ores and crafting mechanical arms and transport belts by hand, but in short time you can become an industrial powerhouse, with huge solar fields, oil refining and cracking, manufacture and deployment of construction and logistic robots, all for your resource needs. However this heavy exploitation of the planet’s resources does not sit nicely with the locals, so you will have to be prepared to defend yourself and your machine empire.
Join forces with other players in cooperative Multiplayer, create huge factories, collaborate and delegate tasks between you and your friends. Add mods to increase your enjoyment, from small tweak and helper mods to complete game overhauls, Factorio’s ground-up Modding support has allowed content creators from around the world to design interesting and innovative features. While the core gameplay is in the form of the freeplay scenario, there are a range of interesting challenges in the form of the Scenario pack, available as free DLC. If you don’t find any maps or scenarios you enjoy, you can create your own with the in-game Map Editor, place down entities, enemies, and terrain in any way you like, and even add your own custom script to make for interesting gameplay.
Factorio’s Official Website: http://factorio.com/
Factorio Steam: http://store.steampowered.com/app/427520/