Utah HB 340 (First US State Plug-in Solar Law) · Legalized in Law (Utah HB 340 — Up to 1,200W)

Utah Plug-in / Balcony Solar Calculator (1200W 2026 Guide)

2026 Legal Status: Legalized in Law (Utah HB 340 — Up to 1,200W) · Avg Retail Tariff: $0.13/kWh (Peak: $0.24/kWh) · 5.5 Peak Sun Hours.

Calculate Utah Solar ROI ↓ ☀️ All US & UK Solar Calculators 📑 Full Site Directory

Utah 1200W plug-in balcony solar and LFP battery self-consumption diagram — Utah (Utah HB 340 (First US State Plug-in Solar Law)) Plug-in Solar Architecture

Interactive 2026 Engineering Tool

Plug-in / Balcony Solar ROI & Self-Consumption Calculator

Utah HB 340 (First US State Plug-in Solar Law)

Solar Array Wattage (W) — Legal Limit: 1200W

400W800 W1,600W

Electricity Rate ($/kWh Peak/Daytime)

Daily Peak Sun Hours (Utah Avg: 5.5 hrs)

Direct Self-Consumption % (With LFP Battery = 92%, Without Battery = 55%)

35% (No Battery)92%98% (With Smart Battery)

Complete Kit Cost ($)

Apply 30% Federal Clean Energy Tax Credit (IRC §25D — expires Dec 2032)

💰 Your 30% ITC Savings: $0 back on your federal taxes. Effective cost after credit: $0. Adjusted payback: 0 yrs.

Verified Yield & Payback Output

Annual Solar Output

1,380 kWh

Annual Bill Savings

$510/yr

Simple Payback Period

2.5 Years

10-Year Net Profit

$3,800

Utah Legal Verdict: Legalized in Law (Utah HB 340 — Up to 1,200W). Utah HB 340 officially exempts plug-in solar systems up to 1,200 watts from utility interconnection agreements and fees when compliant with NEC/UL 3700 safety standards.

FAQ

Frequently Asked Questions · Utah Balcony Solar

Is plug-in balcony solar legal in Utah in 2026? ▼

Legalized in Law (Utah HB 340 — Up to 1,200W). Utah HB 340 officially exempts plug-in solar systems up to 1,200 watts from utility interconnection agreements and fees when compliant with NEC/UL 3700 safety standards.

How much does an 800W–1200W plug-in solar kit save in Utah? ▼

At Utah's average electricity rate of $0.13/kWh ($0.24/kWh peak) and 5.5 daily sun hours, an 800W–1200W system with LFP battery storage saves approximately $222 per year by offsetting daytime and evening peak draw.

Do I need a utility interconnection agreement or permit in Utah? ▼

Under Utah HB 340 (First US State Plug-in Solar Law), certified plug-in systems meeting UL 3700 (or UK SI 2026/848 G98) anti-islanding standards do not require costly utility interconnection studies or licensed electrician hardwiring up to 1200W.