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Solar 101
What if George Washington went solar? A solar system for Mt. Vernon
Curious what a solar cost estimate looks like for a home the size of Mount Vernon? We walk through George and Martha Washington's real electric bills, financing options, and system size.
Energy 101
How Many Watts Does an AC Use? Central, Window & Portable (2026)
A central AC uses 3,000–5,000 watts, a window unit 500–1,500. See portable AC and BTU-by-BTU wattage, plus how to calculate your own cost.
Energy 101
How many watts does a refrigerator use? (Watts, kWh & Cost)
A refrigerator uses 300-800 watts on average, but only 100-400 running watts once you factor in compressor cycling. See the formulas, plus what that costs per month.
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