Everyone’s looking for a way to keep the lights on when the power goes out. With increasingly intense weather knocking the power grid offline for days at a time in some regions, traditional fossil-fuel–based backup systems—namely portable or permanent generators—seem increasingly unreliable. That’s why residential solar power combined with battery storage (once an esoteric niche industry) is rapidly becoming a mainstream disaster-preparedness choice, according to more than a dozen installers, manufacturers, and industry experts we interviewed.
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