Hawaiian residents are investing their own money to save longterm costs and the environment. The result is that they are producing a surplus of solar energy beyond what they can use in their homes. This extra energy is supposed to be diverted back into the power grid to save money on HECO‘s reliance on oil and to reduce global warming.

Now the US does have an aged electrical grid and HECO makes the claim that the surge in solar energy production by homeowners is creating safety problems: