In reply to Owen W-G:
Turning things off should be simple - leaving electrical equipment on overnight is a straightforward waste of money, coming straight off the company profit. Same with reducing waste - reduce the amount of money spent on unnecessary paper, print cartridges, toner, etc. At the end of the year, all the savings will add to a tidy wee pot - ask your Finance Director if it's possible to make an assessment of likely savings (particularly with respect to energy savings), and then see if there's a way of creating incentives which encourage these savings. Everyone gets to win - the company makes more money (which pleases the Board), and the incentives reward the staff who contribute to the savings. And the happy by-product is that the environment is left in a slightly less crap state.
Try looking at the Energy Saving Trust website, which might have some useful ideas.