.... I also have a solar array in a neighbouring town that pays well. and an ECO house so over the year I profit from TEPCO on my electric bills.
I can see how this could make sense. Minimal utility bills on the eco house, plus what would probably be stable and predictable payments from TEPCO for what is generated from the solar.
It depends on some business stuff that I don't know and could only guess at. As with a standard real estate purchase (for rental), there are undoubtedly tax deductions or write-offs for depreciation, maintenance, some other costs, other income levels, etc.
I've seen for-sale condos in the Tokyo area advertised for investors, and claiming a 6-8% return for the owner--you buy, rent, cover expenses, claim deductions, and you supposedly get something like that back. Operating a solar 'farm' could have some advantages over buying some kind of rental unit. Solar probably generates (and TEPCO pays) very predictably, while some rental units could go vacant for a while, you might have tenants-from-hell, unexpected clean-up and refurbishing costs, and lord help you if you have to evict someone. So while I don't know the numbers, solar panels are probably a a pretty problem-free tenant. Especially if you've gotten in on it early (a rate lock), before certain parts of the country got over-saturated with solar. I live in what is considered to be a non-sunny part of the country, and I have seen a surprising number of solar farms here.
Still, I'm only speculating, and I don't know what the costs and return on investment would be for a solar installation. (but it would certainly be simpler/easier to run than starting and running an eikaiwa! if the return were anywhere close, I'd go solar.)
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Apart from where you might be siting some solar panels (where you'd want to buy cheap), I'd avoid most of Japan. Declining population coupled with the coming economic picture--it would only make sense to buy in kanto/kansai (fukuoka?)--where people are going, not where they are leaving. The olympics will help tokyo, but that's already happening (has happened) so I'd feel like I was behind the curve on that. And who knows how long chinese hot money will last?
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0% interest?
T: Summary for AT&T Inc.- Yahoo! Finance
PIMCO Dynamic Income Fund: NYSE
DI quotes & news - Google Finance
Western Asset Mrtg Defined Oppn Fund Inc: NYSE
MO quotes & news - Google Finance
Also, there are two kinds of REITs--mortgage REITs and equity REITs:
NLY: Summary for Annaly Capital Management Inc C- Yahoo! Finance
REZ: Summary for iShares Residential Real Estate- Yahoo! Finance
They pay differently, but you get what you pay for...! The trade-off for high payouts is that there is almost never any underlying appreciation (and sometimes depreciation)--something that might be acceptable in retirement, but not as a 30-40 yr old.
Compare any of those with QQQ. The returns are better, and they come as capital appreciation rather than dividends. So you'd accumulate over your working life, and then sell (and pay taxes!) only when you needed the money.
Blah, blah, blah... Again, read a lot, act very cautiously, look for low cost.