Like many, I'm worried about coming inflation and what to do with my investments. I'm retired and need my money to last a long time, I'm 52. I'm also not talking about doing anything drastic, I already have the guns and ammo

, but just some investments that would either lower my future need for money, or hopefully keep up with inflation.
My house is paid off and I have no other debts. I'm thinking about adding a solar water heater, with the tax credits I think the return on investment might be good. I doubt if any other alternative energy options are worth the money yet, except insulation.
I'm not interested in rental property either, but I would buy raw land if the price was right. I'm just not seeing the price of raw land dropping around here at this time.
I guess what I'm looking at are hard assets. Any ideas ?