A Solar Boom So Successful, It's Been Halted

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Photovoltaics proved so successful in Hawaii that the local utility, HECO, has instituted policies to block further expansion

"William Walker and his wife, Mi Chong, wanted to join what's seen as a solar revolution in Hawaii. Shortly after buying their Oahu home earlier this year, they plunked down $35,000 for a rooftop photovoltaic system.

The couple looked forward to joining neighbors who had added panels, to cutting their $250 monthly power bills and to knowing they were helping the environment.

Their plans shifted the day after the PV panels went up in early October. The Walkers learned from a neighbor about a major change in the local utility's solar policy. It led to those 18 panels sitting dormant nearly three months later.

Hawaiian Electric Co., or HECO, in September told solar contractors on Oahu that the island's solar boom is creating problems. On many circuits, the utility said, there's so much solar energy that it poses a threat to the system and a safety issue. Studies are needed on whether grid upgrades are necessary. If they are, residents adding solar must foot the bill. And starting immediately, contractors and residents would need permission to connect most small rooftop systems to the grid."

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