WAIMALU, Hawaii -- As the midday sun baked his four-bedroom home in the Honolulu foothills, George Hayashi watched two workers, with drills whirring, install 18 gleaming solar panels on his garage. A retired military man, Hayashi has lived in Waimalu for 35 years. For decades, rooftop solar didn't seem viable, but now, he said with a laugh, "I look forward to my electric meter going backwards." It's a shared experience in his sleepy neighborhood: One house after another is sprouting panels. Hayashi is lucky he has got his panels. When it comes to solar power, Hawaiians are in a race. And for a small but growing number, the competition is already over.