Don't put the cart before the horse. There are currently only 37 million SLR in circulation, which is a very small amount. The 98 billion is projected over a 40 year period and the only way we would ever see 98 billion in circulation is if this coin's market value was so high (likely $20+) that it would draw enough attention in the solar power community such that a substantial amount of people started submitting claims for grants. So it's different than with bitcoin, because with bitcoin all you need is only a single user with a single miner to mine all the coins, but with solarcoin, no single user can "mine" or "claim" all the coins. It takes hundreds of thousands, if not millions of users, rather than just one. And when this coin has a hundred thousand users or even a million users or more, then the market price will rise accordingly. In other words, increasing the number of users = increasing the value. So 98 billion seems like a lot, but we will never even get close to that number until the number of users (and thus the value) substantially increases.