Introduction

A single mining-profitability calculator result is not the same thing as a reconciled operating result. To calculate an Antminer L9's return after electricity, add the USD value of net mining rewards credited during the period and subtract the electricity cost for that same period. Deduct any other operating costs not already included to get a fuller picture of profitability.

This article focuses on three records: the LTC credited by the pool, the DOGE credited through merged mining, and the electricity consumed. Include any other mining rewards actually credited to the account when reconciling total income. The worked example uses hypothetical reward amounts and prices to explain the method; it is not a forecast of current L9 earnings.

The L9 mines the Scrypt algorithm and connects to a Litecoin (LTC) pool. Through merged mining, the same proof-of-work submitted for LTC can simultaneously satisfy Dogecoin's AuxPoW requirement, so an LTC pool can credit DOGE rewards without any additional hashing work. This is a mechanism for crediting multiple reward streams from one workload—not a way to split the machine's hashrate between chains.

Confirm L9 version

Before comparing any income figure to a power bill, confirm which L9 configuration is actually installed. Bitmain's specification page, last updated December 26, 2024, lists the 16 GH/s Antminer L9 at a typical wall power of 3,360 W and a power efficiency of 210 J/GH, measured at 25°C (Bitmain, L9 Specifications). Bitmain also discloses tolerances on these figures: hashrate can vary by ±3%, and wall power and efficiency can vary by ±5%.

This matters for profitability reconciliation in two ways. First, any electricity estimate built from the nameplate 3,360 W figure is a planning baseline, not a guarantee; actual draw should be checked against a suitable meter or PDU reading where available. Second, confirming the exact model and firmware avoids comparing a later or earlier L9 variant's rated hashrate against a different unit's actual power draw, which would produce a misleading efficiency comparison. Miner-reported hashrate and measured wall power are useful for this confirmation step, but point-in-time readings should not be treated as daily averages without logging them over the period being reconciled.

Record each credited reward

The pool account's reward records are the source for revenue reconciliation, because the device dashboard shows status and estimated hashrate, while the pool account shows what was actually credited. For an L9 connected to ViaBTC's LTC pool, track these two reward lines separately:

• LTC, under the account's selected payout method (PPS+ or PPLNS)
• DOGE, credited through merged mining

ViaBTC's current documentation also lists BELLS, PEP and DINGO merged-mining rewards. This article's example focuses on LTC and DOGE; add any other rewards actually credited when calculating the account's total mining income.

A common misunderstanding is that selecting PPS+ for LTC also stabilizes DOGE income. It does not. ViaBTC's merged-mining documentation states that DOGE rewards are distributed under PPLNS regardless of whether the LTC account is set to PPS+ or PPLNS, and that DOGE is settled on its own two-hour cycle (ViaBTC, LTC Merged Mining Coins Mining Tutorial). In practice this means an operator can see a relatively steady LTC block-reward credit alongside a DOGE credit that varies from one settlement window to the next, because the two reward lines follow different distribution rules even though they come from the same submitted work.

For each reconciliation period, record the amounts credited, the USD price used for each conversion, and the timestamp and source of that price. This article values rewards at the time they are credited. Pricing each credit at its timestamp provides the most detailed reconciliation; a consistently applied daily price can provide a practical approximation if clearly labeled.

A single end-of-month price can show what the accumulated coins are worth at month-end, but it does not measure their value when credited. Keep that valuation—and any actual proceeds from a later sale—separate from the mining-income calculation. Use a consistent time zone and check settlement windows near the start and end of the period, since the time a reward is credited may differ from the time the mining work occurred.

Deduct pool and electricity costs

ViaBTC's published fee schedule treats LTC's PPS+ mode as two components rather than one flat rate: a 4% fee applies to the PPS-paid block-reward component, while transaction fees are distributed separately under PPLNS at a 2% fee; the PPLNS payout mode itself carries a 2% fee (ViaBTC, Fees). When using net credited mining rewards after applicable fees, do not subtract those fees a second time.

Electricity should be calculated from power consumed, not from a hashrate reading. Using Bitmain's 3,360 W typical wall-power figure for the 16 GH/s L9:

• Daily energy use = 3.360 kW × 24 hours = 80.64 kWh
• 30-day energy use = 80.64 kWh × 30 = 2,419.2 kWh

The table below shows the resulting usage-based electricity cost at several rates, assuming continuous 24-hour operation at this rated power draw. Fixed service charges and demand charges are excluded.

The 9.05¢/kWh and 18.21¢/kWh rows correspond to the U.S. Energy Information Administration's October 2026 forecast for full-year 2026 average industrial and residential electricity prices, respectively (EIA, Short-Term Energy Outlook, Table 7c). These are national averages, not a specific hosting contract or utility tariff, and should be replaced with the operator's actual electricity costs whenever available.

For an actual bill, calculate usage charges from metered kWh and the applicable tariff, then add any fixed service charges or demand charges allocated to the operation. Alternatively, use an effective per-kWh rate that already includes those allocated charges, without adding them again. If a hosting invoice bundles electricity with other services, count each cost once and deduct only hosting charges not already included in the electricity figure.

Calculate reward value minus electricity

With both sides of the ledger recorded on the same clock, calculate the USD value of credited rewards minus electricity expense for that period, then deduct any hosting or conversion fees not already reflected in those figures. The following hypothetical daily example illustrates the method; both the reward quantities and the coin prices are assumptions, not current earnings or market-price claims.

Suppose a 16 GH/s L9 runs continuously for 24 hours and the pool account shows 0.085 LTC credited under PPS+ and 120 DOGE credited under PPLNS for that period. For simplicity, assume prices remain at $59.51 per LTC and $0.08163 per DOGE throughout the day:

• LTC reward value = 0.085 × $59.51 ≈ $5.06
• DOGE reward value = 120 × $0.08163 ≈ $9.80
• Total reward value ≈ $14.85

Totals and subsequent calculations use unrounded values, so displayed rounded components may differ from the total by one cent.

At $0.10/kWh and the 80.64 kWh daily energy estimate used above, electricity expense is $8.06, leaving roughly $6.79 after electricity, before hosting, cooling, repairs, depreciation or taxes. If the electricity rate were instead $0.1821/kWh—the EIA's forecast 2026 residential average—the same reward value would leave only about $0.17 after electricity. Neither result represents full net profit.

To investigate a gap between a calculator estimate and actual income, first compare the LTC and DOGE quantities using consistent assumptions for network difficulty, payout method, fees and the period covered. Account for PPLNS variation and settlement timing. Apply the same prices to estimated and actual coin amounts when isolating differences in mining output.

Then check effective hashrate, rejected shares and connectivity, and compare measured electricity consumption with the power estimate separately. Bitmain's hashrate and power tolerances describe hardware parameters; they are not thresholds for diagnosing a revenue shortfall. Higher power draw raises electricity costs but does not, by itself, explain fewer credited coins.

Run downside scenarios

Because reward value and electricity cost can move independently, it is useful to model less favorable conditions using the same hypothetical baseline: $14.85 in reward value, 80.64 kWh/day, and $0.10/kWh electricity costing $8.06 per day.

These scenarios are illustrative, not predictive. Calculations use unrounded baseline values. In the 12-hour shutdown scenario, the miner is assumed to draw no power while off and to operate normally for the remaining 12 hours, with other conditions unchanged. Halving reward value is a simplified modeling assumption; actual PPLNS credits within that day may not halve because of reward variance and settlement timing. Fixed service charges, demand charges and other operating costs are outside this table and should be assessed separately.

A loss of connectivity or productive mining time is different from a complete power shutdown: electricity consumption may continue even when useful work stops. For actual reconciliation, use measured energy consumption and credited rewards. Do not apply an additional downtime penalty to rewards already credited, since that would count the lost output twice.

Under PPLNS, short-period reward variance can affect DOGE and, when that method is selected, LTC even with stable hashrate and no downtime. A single day's reconciliation is therefore less useful for judging typical performance than several settlement cycles or a full billing period. Market-price movements after a reward is credited are a separate effect and should be tracked as a holding gain or loss rather than folded back into mining income.

Conclusion

Antminer L9 profitability starts with reconciling credited rewards and electricity costs over the same period. Record LTC and DOGE separately, add any other rewards actually received, and use a consistent method to value those credits in USD. Confirm the installed L9 configuration, use actual electricity consumption where available, and count each pool, electricity and hosting cost only once. The amount remaining after electricity is a useful starting point; other operating costs and equipment costs still matter to overall profitability.

FAQ

Does the Antminer L9 mine LTC and DOGE at the same time, or does it switch between them?

It mines LTC continuously; DOGE rewards are credited through merged mining using the same submitted proof-of-work, via Dogecoin's AuxPoW mechanism. The hashrate is not divided or switched between the two chains.

If I select PPS+ for LTC, does that make my DOGE income fixed as well?

No. ViaBTC's documentation states that DOGE merged-mining rewards are distributed under PPLNS regardless of whether the linked LTC account uses PPS+ or PPLNS, so DOGE credits can still vary between settlement periods even when LTC's block-reward component is paid under PPS+.

Should I subtract the pool fee from my credited LTC and DOGE balances before calculating profit?

Generally no, if the pool account already shows net credited mining rewards after applicable fees. Subtracting the fee again would double-count a cost already reflected in those rewards. Use reward records for the period rather than the account's current balance, which may also reflect withdrawals or transfers.

What electricity figure should I use if I don't have a dedicated meter?

Bitmain's rated wall-power figure—3,360 W for the 16 GH/s L9—is a reasonable planning baseline, but it carries a disclosed ±5% tolerance. A suitable PDU log or hosting invoice reflecting actual kWh consumed will produce a more accurate result. Add applicable fixed or demand charges separately unless they are already included in the rate or invoice total used.

Why did my actual income differ from an online profitability calculator?

Calculator assumptions may differ from your network difficulty, payout method, fees, uptime, electricity consumption or valuation prices. PPLNS variance and settlement timing can also affect credited rewards. Compare coin quantities first, then value estimated and actual rewards using the same prices. Track any later sale proceeds and holding gains or losses separately.

References

Sources checked October 15, 2026. Product rules and forecasts may change.

1. Bitmain, L9 Specifications, updated December 26, 2024.
2. ViaBTC, Fees.
3. ViaBTC Help Center, LTC Merged Mining Coins Mining Tutorial, updated September 15, 2026.
4. U.S. Energy Information Administration, Short-Term Energy Outlook, Table 7c: U.S. Regional Electricity Prices to Ultimate Customers, October 2026 edition, released October 6, 2026.