A1 Sun Inc.

Place Category: Solar Installers

Business Details

Address: 675 Cedar St
City: Berkeley
Region: California
Zip/Post Code: 94710
Phone: (510) 526-5715
Website
Google Rating: 5
Review Count: 8
Years in Business: 19

Certifications & Services

Founding Year: 2007
EnergyRanked Score: 47
34
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EnergyRanked Score
Public Data (max 60)
⭐ Reputation
16/20
🏆 Experience
10/10
📄 Licensing & Creds
0/10
🌐 Business Presence
3/10
📍 Basic Info
6/10
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✅ Verified Owner
0/5
📋 Profile Completeness
0/15
📸 Photos
0/5
📝 Description
0/5
🛡️ Trust & Engagement
0/10

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A1 Sun Inc. is a solar energy installation company serving Berkeley, California and surrounding areas. They provide residential and commercial solar panel installation, system design, permitting, and interconnection services. Contact A1 Sun Inc. for a free solar consultation and quote.

⚡ Get a Free Quote📞 (510) 526-5715⭐ Read Reviews
📅 Est. 2007 (19 yrs)

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⚡ Solar Incentives in California (2026)

$15,800 (before incentives)
Avg System Cost
6-8 years
Payback Period
$30,000-$50,000 over 25 years
25-Year Savings
$0.31/kWh average
Avg Electricity Rate

Federal Investment Tax Credit (ITC)

Residential: 0% (expired Dec 2025)
Commercial: 30% base + up to 40% bonus adders
Residential ITC expired 12/31/2025. Commercial projects must begin construction by 7/4/2026.

State & Local Programs

Property Tax Exemption
100% exempt
Solar panels excluded from property tax assessments statewide.
NEM 3.0 / Net Billing
~$0.08/kWh export
Time-varying wholesale rates for exported solar. LADWP customers get favorable 1:1 net metering.
RSSE Program (AB 209)
$3,100/kW solar
Income-qualified households (≤80% AMI). Currently waitlisted.
DAC-SASH
$3/W
Low-income homeowners in disadvantaged communities. Systems 1-5 kW.
Sales Tax Exemption
Exempt
No sales tax on solar energy systems in California.
Prepaid Lease Option
30% discount
Commercial tax credit passed to customer as price reduction via PPA.