🇺🇸 California, USA

Unlock Your Home's Savings

California homeowners typically break even in 5.2 years

⚡ Avg. Electricity Rate

EIA · Oct 2024
$0.17/kWh
+3.4% YoY
Residential average. Your rate may vary by provider and usage tier.

Financing Options

Mosaic Solar Loan
TOP PICK
Mosaic
Rate
5.99% APR
Term
25 years
Est. Payment
~$70/mo
Home Size:
2,000 sq ft
$0.28/kWh
Energy Rate
$2,400
Annual Savings
18.5%
5-Year ROI
4.2t/yr
CO₂ Saved
Loading Analysis...

🏆 Top Vendors in Your Region

Informational only
EnergySage
Solar Marketplace
4.8

Compare quotes from pre-screened installers

Visit Website
Tesla Energy
Solar + Storage
4.5

Integrated solar and Powerwall solutions

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SunPower
Premium Solar
4.6

High-efficiency panels with 25-year warranty

Visit Website
ℹ️ About This List
  • These are publicly available vendors in your region
  • HearthIQ has no business relationship with any listed vendor
  • Ratings are based on publicly available reviews
  • Always verify credentials and get multiple quotes

🛠️ Interactive Tools

Bill Analyzer

Personalized

Enter your monthly electricity bill to see personalized savings recommendations.

$
💡 Tip: Check your latest utility bill for the exact amount
💡 Pro Tip: For the most accurate estimate, use the exact amount from your latest utility statement. Your savings will vary based on your home's orientation, shading, and local incentives.

Find Your Best Upgrade

Question 1 of 5
What's your climate like?
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Top Vendors by Country

FEATURED
SunPower
4.9/ 5.0
$$$
25 Years
HQ in Silicon Valley
Maxeon Tech
Tesla
4.5/ 5.0
$$
25 Years
Powerwall Integration
Sleek Aesthetics
Sunrun
4.4/ 5.0
$$
25 Years
Leasing Leader
Widely Available
📊 Based on publicly available ratings and specifications. Not an endorsement.
💰 30% Federal ITC
Government incentives in California, USA may reduce upfront costs.

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Add our calculator to your website or blog. Every embed links back to HearthIQ and helps spread the word!

🌍 Explore by Country

🇺🇸 United States (25)
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🇬🇧 United Kingdom (15)
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🇩🇪 Germany (20)
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🇦🇺 Australia (10)
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🇨🇦 Canada (8)
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🇫🇷 France (6)
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How to Use HearthIQ's Home Energy Calculator

1. Estimate Your Usage

Start by using the slider above to set your home's square footage, or use the Bill Analyzer tool to input your monthly electricity bill. Our calculator uses regional energy rate averages from the EIA regarding electricity prices in Californiato estimate your monthly kilowatt-hour (kWh) consumption.

2. Compare Upgrade Options

HearthIQ analyzes three key efficiency upgrades: Solar Panels (including battery storage),Heat Pumps (replacing gas/oil furnaces), and Smart Home improvements. We calculate the Return on Investment (ROI) for each by factoring in:

  • Current USA electricity rates ($0.28/kWh)
  • Average installation costs referenced from IRENA global renewables reports
  • Available government incentives like the 30% Federal ITC

3. Tips for Maximizing Savings

Reduce before you produce. We recommend improving your home's insulation and sealing air leaks before installing solar panels. A more efficient home requires a smaller, less expensive solar system. Additionally, consider time-of-use rates; shifting energy-intensive tasks (like laundry or EV charging) to off-peak hours can double your savings in some regions.

Why Use HearthIQ?

HearthIQ is a free educational tool designed to help homeowners explore potential savings from energy upgrades. Our estimates are based on publicly available data sources and are provided for informational purposes only. Actual costs and savings will vary. All tools are free to use and require no account signup.

🇪🇺 European Incentives

🇩🇪 Wärmepumpe & Solar 2025
70% KfW funding & GEG rules explained
🇦🇹 Österreich Förderung
0% VAT & OeMAG subsidies for 2025
🇫🇷 MaPrimeRénov Guide
France Rénov & CEE bonuses breakdown
🇳🇱 Netherlands Solar/Heat
ISDE & Net Metering phase-out plan
🇨🇭 Solarförderung Schweiz
Pronovo grants & tax benefits guide

📊 Comparison Guides

Heat Pump vs Solar
Popular
Which upgrade is right for your home? Compare costs, ROI, and climate suitability.
Gas Furnace vs Heat Pump
US
Upfront cost $3,800-$12,000 vs $6,000-$15,000. Efficiency, lifespan, and tax credits compared.
Tesla Powerwall vs Generac
Battery
Battery storage comparison: 13.5 kWh vs modular 9-36 kWh. Warranty, price, efficiency.
Solar: Lease vs Buy
⚠️ Time-sensitive
30% tax credit expires 2025. Compare ROI, property value impact, and long-term savings.
Heat Pump vs Gas Boiler
🇬🇧 UK
UK focus: £7,500 BUS Grant, running costs, and the 2035 gas phase-out explained.
Insulation vs Solar First
Strategy
"Reduce first, then produce" — why insulation has faster payback and makes solar more effective.
View Solar Costs by Country →