Solar Cost Estimator: The Real Price of “Free Energy”
Solar Cost Estimator: The Real Price of “Free Energy”
Sunlight is free. Harvesting it is expensive. The #1 reason DIY projects fail is running out of budget halfway through. Whether you are building a budget Weekender Van or a $100k Expedition Vehicle, use this tool by ShockTrail to generate a realistic shopping list and price estimate.
The Budget Calculator
Select your system size and desired quality tier to see an itemized price breakdown.
System Price Estimator
Market Data by ShockTrail*Estimates based on current US Amazon/Distributor prices.
Budget vs. Premium: What Are You Paying For?
You can build a solar system for $600 or $6,000. Here is the difference in longevity and safety.
| Component | Budget Tier (Amazon Basics) | Premium Tier (Victron/BattleBorn) |
|---|---|---|
| Battery | AGM Lead-Acid (Lasts 2-3 years) | LiFePO4 Lithium (Lasts 10+ years) |
| Controller | PWM (70% Efficiency) | MPPT (98% Efficiency + Bluetooth) |
| Inverter | Modified Sine (Noisy, Hot) | Pure Sine Wave (Grid Quality) |
The Hidden Costs Everyone Forgets
Most blogs tell you the price of panels and batteries but forget the “Balance of System” (BOS). According to EnergySage market data, wiring, fuses, lugs, and mounts can account for 25% to 30% of the total project cost.
- Copper Wire: 4/0 AWG cable costs over $10 per foot.
- Fuses & Breakers: A single Class-T fuse holder is $50.
- Tools: You will need a hydraulic crimper ($60) and wire strippers.
Why Lithium is Cheaper in the Long Run
Although a Battle Born Battery costs $900 upfront vs. $200 for a Lead-Acid battery, the “Levelized Cost of Energy” (LCOE) is lower. You will replace the Lead-Acid battery 4 times in the lifespan of one Lithium battery.
Frequently Asked Questions (FAQ)
Does the Federal Solar Tax Credit apply to DIY?
In the US, the 30% Solar ITC (Investment Tax Credit) generally applies to the cost of equipment for home installations, even DIY. Consult a tax professional for mobile/RV rules.
Is it cheaper to buy a “Solar Kit”?
Kits from brands like Renogy are convenient but often include undersized wiring. Piecing it together yourself (using ShockTrail calculators) ensures higher quality for a similar price.
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