Your own power plant. Small, but yours.
One 200W solar panel, a charge controller, a battery, and a few DC loads. No permits. No inspections. No electrician. No government permission of any kind. Under $500 out of pocket, and every watt it generates is a watt you didn’t buy from the monopoly.
Oregon’s Solar Installation Specialty Code has a safe harbor exemption for standalone systems under 200W. That means the state already said you can do this — no red tape, no bureaucrats, no waiting. You buy the parts, you build it, you own the power.
What this system is: A self-contained DC power station for your shed, garage, or workshop. Solar panel charges a battery. Battery powers 12V loads — LED lights, USB chargers, a fan. No grid connection. No utility involvement. Energy independence starts here.
What this system isn’t: It’s not going to power your house or replace your utility bill. That’s System 2. This is the entry point — proof that solar works, that you can build it yourself, and that nobody needs to give you permission to generate your own electricity on your own property.
A 200W panel generates roughly 0.6 to 1.0 kWh per day in Oregon. Here’s what that runs:
Everything stays 12V DC. No inverter, no AC conversion, no complexity. Simple, reliable, and you built it yourself.
Under $300 with lead-acid. Around $500 with LiFePO4 (the smarter long-term play). Here’s what you need:
| Component | Specification | Approx. Cost |
|---|---|---|
| Solar panel | 200W monocrystalline, MC4 connectors, UL-listed | $80-$150 |
| Charge controller | MPPT, 15-20A, Bluetooth monitoring preferred | $60-$100 |
| Battery (LiFePO4) | 12V, 100Ah, built-in BMS | $200-$300 |
| Battery (lead-acid alternative) | 12V, 100Ah, deep-cycle AGM | $80-$150 |
| Inline fuse + holder | 20-30A, DC-rated | $5-$10 |
| PV extension cable | 10AWG, MC4 connectors, UV-rated | $20-$30 |
| Mounting brackets | Z-brackets, single panel mount | $15-$25 |
| DC loads | 12V LED lights, USB outlets | $15-$40 |
A note on where these are made: We’ll be straight with you — most affordable 200W panels and entry-level components are manufactured overseas, primarily in China. At this price point, American-made options are limited. The charge controller market is better: Victron (Netherlands) makes excellent MPPT controllers. When you scale up to System 2, American-made inverters and batteries become real options — Sol-Ark, EG4 (assembled in the US), and others are competing hard in that space. This system gets you started. System 2 is where you go American.
Buying advice: MPPT charge controllers extract 10-25% more energy than PWM — worth the extra cost. LiFePO4 batteries last 3,000-6,000 cycles vs. 300-500 for lead-acid. That’s a 10x lifespan advantage. Buy new panels from a reputable brand. Use listed/certified components across the board.
All-DC. No inverter, no AC, no connection to any building’s electrical system. Simple and safe.
Connection sequence:
Panel → MC4 cables → Charge Controller → Fused connection → Battery → DC Loads
The charge controller manages power flow between the panel and battery — prevents overcharge, optimizes extraction, protects the battery. DC loads tap the battery or the controller’s load terminals.
Wire gauge: 10-12 AWG for all DC runs. UV-rated PV wire for any outdoor section. Keep runs short — voltage drop at 12V is 10x worse than at 120V for the same wire resistance. Under 15 feet from panel to controller is the target.
A visual wiring diagram is coming soon.
Seven steps. One afternoon. Your power, your hands.
South-facing with minimal shade during 10 AM to 3 PM. Shed roof, south-facing wall, or ground lean. Direct sunlight for as many hours as possible.
Z-brackets on a shed roof for a permanent install. Or lean the panel against a south-facing wall at 30-45 degrees to get up and running fast. Either way, make sure it’s secured against wind.
UV-rated PV extension cable from the panel to your indoor equipment location. Route through a wall penetration or existing opening. Seal the hole with silicone or a weatherproof grommet.
Mount the charge controller inside — on a wall or shelf, protected from weather. Connect the panel’s MC4 cables to the solar input terminals. Don’t connect the battery yet.
Wire the fuse holder between the controller’s battery output and the battery connection point. 20-30A fuse for this system.
Fused output to battery terminals. Positive to positive, negative to negative. Controller should light up and show battery voltage. That’s your system talking.
Wire up your 12V lights, USB charger, whatever you want to power. Turn them on. You’re generating your own electricity.
Five rules. No exceptions. No shortcuts.
You now have a working solar system and firsthand knowledge of how panels, charge controllers, and batteries work together. That experience matters more than any article you’ll read online, because you built it.
Where to go from here:
Keep learning:
DATA SOURCED FROM: Oregon Solar Installation Specialty Code (2010), Section 301.1 Commentary; Oregon Residential Specialty Code (ORSC), Section R105.2; Oregon Revised Statutes, ORS 479.540 (homeowner electrical work exemption). Component specifications from manufacturer datasheets.