When is the right time to buy a new/emerging technology?
If you're looking for a purely financial answer (ignoring the social/environmental aspects) there are a few different ways you can look at it. For these types of improvements the simplest is a payback calculation.  How long would it take you to recoup the initial costs?   For example, if the entire installation cost $5,000 (including any tax credits), and you save $100 per month (I'm making both numbers up), you'll pay back your investment in 50 months, or about 4 years.   (Note that if you borrow money to do the improvement, then your payback period is longer because you're reducing the amount that you're saving each month by paying interest.) If you're deciding between different uses for the money (like investing, or paying down other debt) then you can look at the return that you're getting.  Using the same example, you are spending $5,000 and getting $100 per month back, for a 24% annual return ($1,200 / $5,000), which is better than you can get on almost anything but a 401(k) match (meaning don't stop your 401(k) contributions to do this either). The decision on whether or wait or not then becomes - will the price drop faster than the amount of savings you will realize.  So if you will save $100 per month in your electric bill, is the price of the complete installation going down by more than $100 each month?  If not, you'd be better off buying now and start paying back the investment sooner. The short answer is that it's never the right time to buy an emerging technology. As long as the technology is emerging, you should expect that newer revisions will be both better and less expensive. With solar, specifically, there are some tax credits to help the early adopters that may help you on the cost/benefit analysis, but in the end, you still have to decide whether the benefits outweigh the costs now, and if not, whether that will change in the near future. For me, part of the solar benefit is the ability to generate electricity when the power goes out. That option does require local battery storage, however. One of the benefits of using Musk's solar tiles instead of actual slate is the weight of the quartz tiles which is much lower than the weight of real slate. In many cases a slate roof is heavy enough to require major reinforcement of the roof trusses before installation. The lower weight also saves significantly on shipping costs. This is where Musk can lower costs enough to be competitive to some of the materials he hope to compete with. When is the right time to buy a new/emerging technology? When it's trading at a discount that allows you to make your money back and then some. The way you presented it, it is of course impossible to say. You have to look at exactly how much cheaper and efficient it will be, and how long that will take. Time too has a cost, and being invested has opportunity cost, so the returns must not only arrive in expected quantity but also arrive on time. Since you tagged this investing, you should look at the financial forecasts of the business, likely future price trajectories, growth opportunity and so on, and buy if you expect a return commensurate with the risk, and if the risk is tolerable to you. If you are new to investment, I would say avoid Musk, there's too much hype and speculation and their valuations are off the charts. You can't make any sensible analysis with so much emotion running wild. Find a more obscure, boring company that has a sound business plan and a good product you think is worth a try. If you read about it on mainstream news every day you can be sure it's sucker bait. Also, my impression that these panels are actually really expensive and have a snowball's chance in Arizona (heh) in a free market. Recently the market has been manipulated through green energy subsidies of a government with a strong environmentalist voter base. This has recently changed, in case you haven't heard. So the future of solar panels is looking a bit uncertain. I am thinking about buying solar panels for my roof. That's not an investment question, it's a shopping question. Do you actually need a new roof? If no, I'd say don't bother. Last I checked the payoff is very small and it takes over a decade to break even, unless you live in a desert next to the Mexican border. Many places never break even. Electricity is cheap in the United States. If you need a new roof anyway, I suppose look at the difference. If it's about the same you might as well, although it's guaranteed to be more hassle for you with the panels. Waiting makes no sense if you need a new roof, because who knows how long that will take and you need a roof now. If a solar roof appeals to you and you would enjoy having one for the price available, go ahead and get one. Don't do it for the money because there's just too much uncertainty there, and it doesn't scale at all. If you do end up making money, good for you, but that's just a small, unexpected bonus on top of the utility of the product itself. As you said, the next generation will be cheaper and more efficient. Same for the generation after that. From a financial standpoint, there isn't a steadfast theory that supports when to buy the technology. It comes down to primarily personal issues.  As far as I know, Musk's claims about the cost were relating to a traditional slate roof, not a traditional asphalt shingle roof. I can't recall if he explicitly said one way or the other, but I have yet to see any math that supports a comparison to asphalt shingles. If you look at all of the demos and marketing material, it's comparisons to various styles of tile roofing, which is already more expensive than asphalt shingles.  Do you feel it's worth it to invest now, or do you think it would be more worth it to invest later when the costs are lower? A new roof will last 10-20 years (if not longer...I'm not a roof expert). Do you need a new roof yet? Are your electricity bills high enough that the cost of going solar will offset it enough? Can you sell unused power back to your power company? I could go on, but I think you get the point. It's entirely a personal decision, and not one that will have a definitive answer. If you keep waiting to make a purchase because you're worried that the next generation will be cheaper and more efficient, then you're never going to make the purchase.
"Well, I'd probably need to buy a lot more [Tide](http://nymag.com/news/features/tide-detergent-drugs-2013-1) to hide any purchases I don't want Uncle Sam to know about (not just drugs, either - When's the last time you paid sales tax at a yard sale?).   Other than that, I doubt it would matter much.  99.9% of my financial transactions are *already* on plastic, and I regularly keep the same ""emergency $20 bill"" in my wallet for months at a time." The other answers have offered some great advice, but here is an alternative that hasn't been mentioned yet. I'm assuming that you have an adequately-sized emergency fund in savings, and that your cars are your only non-mortgage debt. Since you still have car debt, you probably don't have anything saved for buying a new car when your current cars are at the end-of-life. Consider paying off your car loans early, then begin saving for your next car. Having cash in the bank for a car is very freeing, and it changes your mindset when it comes time to purchase a car, as it is easy to waste a lot of money on something that depreciates rapidly when you aren't paying for it immediately.  This approach might be counterintuitive if your car loan interest rate is less than your mortgage rate, but you will probably need another car before you need another house, and paying cash for a car is worth doing. The essential difference b/n ADR and a common share is that ADR do not have Voting rights. Common share has.  There are some ADR that would in certain conditions get converted to common stock, but by and large most ADR's would remain ADR's without any voting rights. If you are an individual investor, this difference should not matter as rarely one would hold such a large number of shares to vote on General meeting on various issues. The other difference is that since many countries have regulations on who can buy common shares, for example in India an Non Resident cannot directly buy any share, hence he would buy ADR. Thus ADR would be priced more in the respective market if there is demand. For example Infosys Technologies, an India Company has ADR on NYSE. This is more expensive around 1.5 times the price of the common share available in India (at current exchange rate). Thus if you are able to invest with equal ease in HK (have broker / trading account etc), consider the taxation of the gains in HK as well the tax treatment in US for overseas gains then its recommended that you go for Common Stock in HK. Else it would make sense to buy in US. So My question is. Is my credit score going to be hit?  Yes it will affect your credit.  Not as much as missing payments on the debt, which remains even if the credit line is closed, and not as much as missing payments on other bills...   If so what can I do about it?  Not very much.  Nothing worth the time it would take.  Like you mentioned, reopening the account or opening another would likely require a credit check and the inquiry will add another negative factor.   In this situation, consider the impact on your credit as fact and the best way to correct it is to move forward and pay all your bills on time.  This is the number one key to improving credit score.   So, right now, the key task is finding a new job. This will enable you to make all payments on time.  If you pay on time and do not overspend, your credit score will be fine. Can I contact the creditors to appeal the decision and get them to not affect my score at the very least? I know they won't restore the account without another credit check). Is there anything that can be done directly with the credit score companies? Depending on how they characterize the closing of the account, it may be mostly a neutral event that has a negative impact than a negative event.  By negative events, I'm referring to bankruptcy, charge offs, and collections.  So the best way to recover is to keep credit utilization below 30% and pay all your bills and debt payments on time. (You seem to be asking how to replace this line of credit to help you through your unemployment.) As for the missing credit line and your current finances, you have to find a way forward.  Opening new credit account while you're not employed is going to be very difficult, if not impossible.  You might find yourself in a situation where you need to take whatever part time gig you can find in order to make ends meet until your job search is complete.  Grocery store, fast food, wait staff, delivery driver, etc. And once you get past this period of unemployment, you'll need to catch up on all bills, then you'll want to build your emergency fund.  You don't mention one, but eating, paying rent/mortgage, keeping current on bills, and paying debt payments are the reasons behind the emergency fund, and the reason you need it in a liquid account.   Source:  I'm a veteran of decades of bad choices when it comes to money, of being unemployed for periods of time, of overusing credit cards, and generally being irresponsible with my income and savings.  I've done all those things and am now paying the price.  In order to rebuild my credit, and provide for my retirement, I'm having to work very hard to save.  My focus being financial health, not credit score, I've brought my bottom line from approximately 25k in the red up to about 5k in the red.  The first step was getting my payments under control.   I have also been watching my credit score.  Two years of on time mortgage payments, gradual growth of score.  Paid off student loans, uptick in score.  Opened new credit card with 0% intro rate to consolidate a couple of store line of credit accounts.  Transferred those balances.  Big uptick.  Next month when utilization on that card hits 90%, downtick that took back a year's worth of gains.  However, financially, I'm not losing 50-100 a month to interest. TLDR; At certain times, you have to ignore the credit score and focus on the important things.  This is one of those times for you.  Find a job.  Get back on your feet.  Then look into living debt free, or working to achieve financial independence. In the theory: *Somewhere between the most you think you can get, and the minimum you think you deserve * In your case: If they want you to actually invest, they aren't purely interested in your technical expertise. which means that you need to actually believe in the idea and be involved in the decision making process. That really depends on what technology entrepreneurship exactly you are talking about. "I think this gets at why some of us are becoming concerned about the volume (or more importantly the portion) of HFT in capital markets these days. You have algos trading based on ""technical trends"" which are increasingly just the behavior of other algos. Rinse and repeat. At a certain point it just becomes a feedback loop.  Now, I agree that there's no reason to be scared of HFT simply because its new or fast, which is what I think threatens a lot of people. But the problem is that the economic and social utility of markets arises from their being information aggregation engines. If it gets to the point where most of the price action is driven by algos which are trading solely based on a few minutes of technical data, no new information is being contributed to the price discovery process.   Now, it may be that a certain amount of ""meta-information"" can be discovered from pattern analysis of short term technical history. But it seems to me this information is more limited in both quality and quantity compared to the information inputs of thoughtful humans acting on a reasoned analysis of economic and other world events." This same problem existed when the first gas powered cars began popping up. The problem your pointing out will get resolved as demand grows. It will actually be quite a business opportunity for some.  It will surely deter some, like yourself, from being early adopters, but these things always work themselves out. "I'm really surprised more people didn't recommend UGA or USO specifically.  These have been mentioned in the past on a myriad of sites as ways to hedge against rising prices.  I'm sure they would work quite well as an investment opportunity.  They are ETF's that invest in nearby futures and constantly roll the position to the next delivery date.  This creates a higher than usual expense ratio, I believe, but it could still be a good investment.  However, be forewarned that they make you a ""partner"" by buying the stock so it can mildly complicate your tax return."