Don, I am very sorry to hear of these struggles, as drug and alcohol addiction has and will continue to ruin many lives.

On all of the ones I've dealt with, you can slide the magnets out and try to clean the magnets and the metal up with denatured alcohol.

What is your energy consumption?

I am also networking with a historic preservation group in my area and signed up to volunteer with the Land Use Committee in my neighborhood association.I am already a voracious reader and podcast listener so that won't change; however, a personal goal is to scale back my consumption of social media like FB.

They would gladly accept any net power we generate above our consumption, but it would be a poor business decision to install a photovoltaic array for that purpose. 

Our rational is as follows:We can command $30 - $50 additional rent for en-suite laundry;It is a differentiator in some of our markets (not have coin-op in student rentals goes a long way);Installing the laundry ourselves ensures it is plumbed correctly with drip/catch pans (plumbed to a floor drain) under the washers;Providing the machines cuts down on the damage to the building of tenants moving machines in-and-out;Using high-efficiency units cuts down on water consumption;appliances are depreciated over 5-years (in Canada).  

You'll never have a system large enough to offset all of your tenants consumption and even if you did you would have significant issues assessing usage by meter.That being said there are some other ways to deploy solar in a multifamily situation.

I recall the one looker who reeked of alcohol on his breath - don't light a match near him I thought; when his application came back there were 9 landlord tenant cases, and a foreclosure, and a bankruptcy ...Then there was the one who I handed in writing the criteria where my criminal requirements state no unadjudicated cases - and I specifically asked them to read and confirm that wouldn't be a problem.

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Every space heater I've ever seen has a max power consumption of 1500 watts.