Within an agency, each building will decide on one day per month to shut down operations. This effort will save energy and reduce the agency's carbon footprint, directly reducing energy and real estate costs.
Employees will be encouraged to telework, which contributes to happier employees with better work/life balances.
Some installations (and also public lands) have cell phone carriers who lease out land to have cell phone towers on them. Require that a provision of the lease be to allow the government cell phones and blackberries at that particular area to have free coverage on that providers network.