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Message: [QUOTE="CuseOnly, post: 1074225, member: 2804"] It cost SU $60K a month for electricity just to keep the roof up. That's 72oK a year. Change to a hard roof and more than half if not all that cost will disappear. I would imagine that a hard or opaque roof will be better for heat retention as well which will save additional dollars. In other words, they spent 10 million dollars on keeping the roof up since it was installed in '99, add in heating costs to get the dome up to 85 degrees during a snowfall and maintenance to keep the snow off. I can't afford to heat my house to 85 and maintain it for any length of time, I would hate to see what it costs to heat the dome in the winter months. [/QUOTE]