The Hardware/Software Landscape
Bitcoin is trading above $1,000 for the first time in nearly three years, and the mining hardware landscape in early February 2017 tells a story of complete transformation. The days of GPU mining Bitcoin are effectively over. Application-specific integrated circuit (ASIC) miners, led by Bitmain’s Antminer S9, now dominate the network. The Antminer S9, which runs Bitmain’s BM1387 chips, delivers roughly 14 terahashes per second (TH/s) while consuming around 1,375 watts of power. That represents a staggering efficiency leap from just 18 months prior, when the Antminer S7 was considered top-tier at 4.86 TH/s.
Bitmain Technologies, headquartered in Beijing, has emerged as the undisputed hardware king. Founded by Micree Zhan and Jihan Wu, the company controls an estimated 70-80% of the ASIC mining hardware market. Competitors like Canaan Creative (makers of the AvalonMiner series) and Bitfury continue to operate, but Bitmain’s aggressive pricing and volume production give it a decisive edge in early 2017.
On the software side, mining pools have become essential infrastructure. No individual miner can reasonably expect to find a block solo at current difficulty levels. Antpool (operated by Bitmain), F2Pool, BTC.com, and Slush Pool collectively control over 60% of the global hashrate. The centralization concerns surrounding these pools continue to be a topic of heated debate within the Bitcoin community.
Hashrate and Difficulty
Bitcoin’s network hashrate in early February 2017 sits at approximately 3.5 exahashes per second (EH/s). To put that in perspective, the hashrate has more than doubled since mid-2016, driven by the rollout of next-generation ASIC equipment. Mining difficulty adjusts every 2,016 blocks (approximately every two weeks), and the trend has been relentlessly upward. Each adjustment pushes difficulty higher by 5-10%, reflecting the flood of new mining hardware coming online.
The difficulty adjustment algorithm, a core feature of Bitcoin’s design since Satoshi Nakamoto’s original code, ensures that blocks continue to be found roughly every 10 minutes regardless of how much hashpower joins or leaves the network. In February 2017, each adjustment is shaving a few more percentage points off miner margins, creating a Darwinian environment where only the most efficient operations survive.
The geographic concentration of mining has shifted significantly. China, particularly the Sichuan and Xinjiang provinces, accounts for an estimated 60-70% of global Bitcoin mining. Abundant cheap hydroelectric power in Sichuan and coal-fired electricity in Inner Mongolia make these regions uniquely attractive. Other notable mining hubs include Iceland (geothermal), Georgia (hydropower), and Venezuela (heavily subsidized electricity, though political instability makes operations risky).
Profitability Metrics
With Bitcoin trading at approximately $1,027 in early February 2017, mining profitability has improved dramatically compared to the bear-market lows of 2015 and 2016. An Antminer S9 operator with access to electricity at $0.05 per kilowatt-hour can expect to generate roughly $8-12 per day in profit after electricity costs. At the current block reward of 12.5 BTC (worth approximately $12,837 per block), miners are collectively earning over $1.8 million per day in block rewards alone, plus transaction fees.
However, the economics are increasingly skewed toward large-scale operations. A small miner running a single Antminer S9 out of a garage faces electricity costs of $0.10-0.15/kWh in most developed countries, which significantly erodes or eliminates margins. Industrial-scale operations with thousands of units, custom cooling systems, and negotiated power contracts at $0.03-0.04/kWh are the ones capturing the bulk of mining profits.
The return on investment (ROI) timeline for a new Antminer S9 is currently estimated at 8-12 months under favorable conditions, assuming Bitcoin maintains its price above $900. But ROI calculations are inherently speculative, as difficulty increases can extend payback periods significantly if price action fails to keep pace.
Environmental Impact
The environmental question is beginning to attract mainstream media attention. Bitcoin’s annualized electricity consumption in early 2017 is estimated at roughly 10-15 terawatt-hours (TWh), comparable to the entire country of Jordan. Critics argue that this energy expenditure is wasteful, while proponents counter that mining incentivizes the development of renewable energy infrastructure and utilizes stranded energy that would otherwise go to waste.
In Sichuan, miners take advantage of surplus hydroelectric power during the wet season that would be curtailed regardless. In Iceland, geothermal energy provides nearly carbon-neutral mining operations. The narrative is more complex than the headlines suggest, but as Bitcoin’s energy footprint grows, regulatory scrutiny in environmental-conscious jurisdictions is likely to intensify.
Strategic Outlook
For miners, the strategic picture in February 2017 is both promising and challenging. Bitcoin’s return to $1,000 signals renewed market confidence, but the relentless difficulty increases mean standing still is falling behind. The key strategic decisions include: hardware procurement timing (next-generation ASICs are always on the horizon), geographic diversification to mitigate regulatory and energy risks, and hedging strategies to protect against Bitcoin price volatility.
The upcoming Bitcoin halving, scheduled for mid-2020, looms as the industry’s defining challenge. When the block reward drops from 12.5 to 6.25 BTC, miner revenue from block rewards will be cut in half overnight. Only operations with the lowest cost structures will survive. The miners who are building scale and efficiency now, in the early days of 2017, are positioning themselves for that inevitable reckoning.
Disclaimer: This article is for informational purposes only and does not constitute financial advice. Cryptocurrency mining involves significant risk, including the potential loss of capital. Past performance is not indicative of future results. Always conduct your own research before making any investment decisions.
ran an S9 from march 2017 through the bull run. that thing was a tank, still got it in my garage somewhere collecting dust
Bitmain controlling 70-80% of the market was always the elephant in the room. Jihan Wu had way too much influence over mining centralization
^ remember when they bricked the S9 firmware if you were mining on a rival pool? good times lol
bricking firmware on rival pools was peak jihan wu. bitmain got away with monopoly behavior for years because nobody could compete on price
14 TH/s on the S9 was revolutionary in 2017. now we have machines doing 200+ TH/s. the efficiency curve in mining hardware is relentless