A Stockholm company that sells high-performance servers for Bitcoin mining is building a 10MW data center to host mining machines in Boden, Sweden, about 20 miles north of Lulea, home to a massive Facebook data center.

KnC Miner said this was going to be one of many data centers it would use to provide Bitcoin mining services to customers. It will provide these services for free to customers who have ordered one of its servers during the time it takes to deliver the machine to them.

As it is getting close to releasing its latest Neptune mining system, KnC has decided to discontinue sales of the previous Jupiter system. It is offering the hosted solution as a way to fill the gap for customers who wanted to buy Jupiter but now have to wait until the Neptune (price tag: US$10,000) comes out some time in the second quarter.

Bitcoin is a digital currency created, or “mined,” by computers through solving complex mathematical problems. Creator of the digital currency set the limit of Bitcoin at 21m.

The more of it is mined, the harder it becomes to mine more as the amount mined gets closer to the 21m ceiling.

The currency is highly volatile, its price having swung wildly throughout the five years it has been around.

Many companies have emerged with business models built on serving the Bitcoin ecosystem. Some, like KnC, provide specialized hardware, some provide exchange platforms for the currency and some provide hosting services for mining operations.

KnC said it had US$75m in turnover since June 2013 by serving its customers in about 120 countries. To scale the business, its management decided to expand into data centers.

“Our highly advanced technology consumes a lot of energy, so for us it was imminent to find a production site with access to renewable yet stable and safe energy,” Sam Cole, a KnC co-founder, said in a statement.

Northern Sweden was an attractive option because of abundant low-cost hydroelectric power.

While enjoying a lot of public support for enabling users to avoid government regulation and taxation of their currency, Bitcoin is a controversial subject.

Just yesterday, Apple removed the most popular Bitcoin transfer app, called Blockchain, from the iTunes App store, making it impossible for iPhone users to download it. The Cupertino, California, company did not provide an explanation, saying only that there was an “unresolved issue” with the app, CNN Money reported.

In response, Blockchain said Apple removed its application because it saw it as a threat to its own mobile payment ambitions.

This was the last Bitcoin wallet app in the app store. It is still available for Android users through the Google Play Store.

Last week, the US government arrested Charlie Shrem, CEO of a Bitcoin exchange BitInstant and vice chairman of the non-profit Bitcoin Foundation, which advocates for use of the currency. A US district attorney charged Shrem and a partner with laundering more than $1m worth of Bitcoins for Silk Road, a secret online community allegedly used for drug trafficking.