Solar Panels

The number depends on your energy consumption, roof space, and panel wattage. A typical 2,500 sq ft home uses about 10,000-12,000 kWh annually and needs 20-25 standard 400W panels (or 15-18 higher-wattage 550W panels).

Most quality solar panels are warranted for 25-30 years and can produce electricity for 30-40 years. Performance degrades slowly — expect about 0.5% efficiency loss per year. After 25 years, panels typically still produce 80-85% of their original output.

For most homeowners, yes. With the 30% federal tax credit, dropping panel prices, and rising electricity rates, the average payback period is 6-10 years. After that, you enjoy 15-20 years of nearly free electricity. Solar also increases home value by an average of 4.1% according to Zillow research.

Monocrystalline panels are more efficient (20-24% vs 15-17%), perform better in low light, and take up less space. Polycrystalline panels cost less but require more roof area for equivalent output. For most residential installations, monocrystalline offers better long-term value due to higher energy production per square foot.

DIY installation is possible and can save $5,000-10,000 on labor costs. However, you'll need electrical knowledge, proper permits, and utility interconnection approval. Many of our customers are professional installers or experienced DIYers. We offer complete solar kits with everything you need including detailed installation guides.

Yes, but at reduced efficiency. Panels produce electricity from light, not heat, so they work year-round. On cloudy days, expect 10-25% of normal output. In winter, shorter days reduce production, but cold temperatures actually improve panel efficiency. Germany, with weather similar to Seattle, is one of the world's largest solar markets.

Net metering allows you to sell excess solar electricity back to the grid for credits on your utility bill. When your panels produce more than you use (daytime), you earn credits. At night or during high-usage periods, you use those credits. Policies vary by state and utility.

Solar panels require minimal maintenance. Rain usually keeps them clean, but you may want to rinse them 1-2 times per year in dusty areas. Inspect annually for damage, bird nests, or debris. Keep trees trimmed to prevent shading. Most modern panels include monitoring apps to track performance and alert you to any issues.