Living large costs less here (June electric bill running everything including ac, pool and car charger ..was $17.17) with geo-thermal heating and cooling as the predominant source of energy. Discrete solar panels generate nominal electric bills, including daily charging of two cars in the three-bay garage. Set off a wide private lane bordered by truly magnificent grounds of adjoining great estates, this transformed five bedroom colonial is now a sleek and uniquely private retreat. An open first floor plan with oversized windows and doors, along with contemporary interior accents, integrates the stunning grounds with dramatic interior spaces. Generous scale in all the rooms allows for flexible usage and easy flow.A double height entry with vaulted ceiling is flanked by dining room and large living room with fireplace, with a stunning two-story solarium beyond. A wide deck, framed with sculptural trunks of intricately twined hanging wisteria vines, extends from inside, allowing for plein-air entertaining. The heart of the house is centered around the masterfully-designed chef's kitchen with industry-appropriate appliances, antimicrobial copper countertops and an end-cut butcher block island for prep. Cooking can be theater with room for two or more chefs and seating for seven around one of the islands. Accessible storage both in cupboards and shelving balances display areas with conventional organization. The family room and an eat-in area are natural extensions of this lively space as are the screened porch and terrace opening on to a salt water pool with waterfall and spa. Upstairs there are two primary suites on opposite ends of the house, both with sitting rooms, and one with fireplace and wide balcony with private views year 'round. Three large bedrooms and a small office or spare room are all separately situated on this floor. A walk-out basement, mud room and separate laundry with dog shower are a few of many extras. Living large costs less here with geo-thermal heating and cooling as the predominant source of energy. Discrete solar panels generate nominal electric bills, including daily charging of one car in the three-bay garage. Enjoy a perfect serenity rarely found in Greenwich...while being just minutes from town.