Case Study: Coffee trucks need a lot of power to run their business. Slow River Coffee in Boise ID had a 12kw diesel generator to supply that power. Its exhaust fumes overwhelmed the aroma of dark-roast coffee, and it was so loud that customers had to shout their orders over the roar. It cost $12k new about 7 years ago and it consumes about 1/2 gallon of fuel per hour. Running it 5-6 hours/day for 5 days/week costs about $50/week for fuel, or $2500/year. Total cost over 7 years: $29,500.
Joule Case installed a 20kwh battery system to replace that. It took about half the space of the old generator. All customers can smell is the fine brew, and the truck is quiet enough to play some music while serving it! The cost of the battery system was $20k, it can recharge in 6 hours with a standard 110V outlet, and 3 hours with a 220V, at a cost of about $2, or about $500/year. Total cost over 7 years: $23,500.
$29,500 for a generator, noise and fumes included. $23,500 for a Joule Case battery system, silent and emissions-free.