SMOG vs. TAN

Last updated Aug 2, 2026

SMOG (VanEck Low Carbon Energy ETF) and TAN (Invesco Solar ETF) are both Alternative Energy Equities funds - SMOG tracks the MVIS Global Low Carbon Energy Index while TAN tracks the MAC Global Solar Energy Index. Both are passively managed. Over the past 10 years, SMOG returned 11.20%/yr vs 9.52%/yr for TAN. Their correlation of 0.80 means they have usually moved in the same direction. SMOG charges 0.61%/yr vs 0.69%/yr for TAN.

Performance

SMOG vs. TAN - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in VanEck Low Carbon Energy ETF (SMOG) and Invesco Solar ETF (TAN). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, SMOG achieves a 3.88% return, which is significantly higher than TAN's 0.43% return. Over the past 10 years, SMOG has outperformed TAN with an annualized return of 11.20%, while TAN has yielded a comparatively lower 9.52% annualized return.

SMOG

• 1D: -0.65%
• 1M: -5.95%
• 6M: -2.63%
• YTD: 3.88%
• 1Y: 21.84%
• 3Y*: 3.43%
• 5Y*: -1.82%
• 10Y*: 11.20%
• ALL TIME*: 1.64%

TAN

• 1D: -1.02%
• 1M: -12.41%
• 6M: -8.39%
• YTD: 0.43%
• 1Y: 35.30%
• 3Y*: -9.55%
• 5Y*: -10.35%
• 10Y*: 9.52%
• ALL TIME*: -7.13%

*Multi-year figures are annualized to reflect compound growth (CAGR)

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
SMOG VanEck Low Carbon Energy ETF	$157.81K	$358.46K	$379.36K
TAN Invesco Solar ETF	$66.73M	$50.86M	$87.18M

SMOG vs. TAN - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
SMOG VanEck Low Carbon Energy ETF	3.88%	33.36%	-9.33%	1.42%	-29.92%	-2.75%	118.38%	38.86%	-10.18%	22.69%
TAN Invesco Solar ETF	0.43%	48.31%	-37.61%	-26.79%	-5.24%	-25.10%	233.96%	66.53%	-25.67%	54.38%

Correlation

The correlation between SMOG and TAN is 0.76, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.76
Correlation (3Y) Balances recent behavior with more history.	0.78
Correlation (5Y) Shows whether the relationship held over a longer period.	0.80
Correlation (10Y) Provides a long-term view across more market conditions.	0.76
Correlation (All Time) Calculated using the full available price history since Apr 15, 2008	0.80

The correlation between SMOG and TAN has been stable across timeframes, ranging from 0.76 to 0.80 - a consistent structural relationship.

SMOG vs. TAN - Sectors Allocation Comparison

Sectors	SMOG	TAN
Utilities	39.3%	4.8%
Industrials	25.5%	1.7%
Consumer Cyclical	21.8%	-
Technology	5.9%	29.8%
Basic Materials	5.3%	-
Energy	1.4%	20.4%
Financial Services	0.6%	4.4%
Communication Services	-	-
Consumer Defensive	-	-
Healthcare	-	-
Real Estate	-	-

Return for Risk

SMOG vs. TAN — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

SMOG

SMOG Risk / Return Rank: 38
SMOG Sharpe Ratio Rank: 38
SMOG Sortino Ratio Rank: 37
SMOG Omega Ratio Rank: 37
SMOG Calmar Ratio Rank: 36
SMOG Martin Ratio Rank: 40

TAN

TAN Risk / Return Rank: 34
TAN Sharpe Ratio Rank: 35
TAN Sortino Ratio Rank: 38
TAN Omega Ratio Rank: 34
TAN Calmar Ratio Rank: 30
TAN Martin Ratio Rank: 33

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

SMOG vs. TAN - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for VanEck Low Carbon Energy ETF (SMOG) and Invesco Solar ETF (TAN). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	SMOG	TAN	Difference
Sharpe ratio: Return per unit of total volatility	0.95	0.87	+0.08
Sortino ratio: Return per unit of downside risk	1.40	1.43	-0.03
Omega ratio: Gain probability vs. loss probability	1.17	1.16	+0.01
Calmar ratio: Return relative to maximum drawdown	1.27	0.96	+0.30
Martin ratio: Return relative to average drawdown	4.26	3.14	+1.12

SMOG vs. TAN - Sharpe Ratio Comparison

The current SMOG Sharpe Ratio is 0.95, which is comparable to the TAN Sharpe Ratio of 0.87. The chart below compares the historical Sharpe Ratios of SMOG and TAN, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

SMOG vs. TAN - Drawdown Comparison

The maximum SMOG drawdown since its inception was -84.39%, smaller than the maximum TAN drawdown of -95.29%. Use the drawdown chart below to compare losses from any high point for SMOG and TAN.

Drawdown Indicators

	SMOG	TAN	Difference
Max Drawdown Largest peak-to-trough decline	-84.39%	-95.29%	+10.90%
Max Drawdown (1Y) Largest decline over 1 year	-16.94%	-35.51%	+18.57%
Max Drawdown (3Y) Largest decline over 3 years	-24.88%	-58.70%	+33.82%
Max Drawdown (5Y) Largest decline over 5 years	-47.86%	-73.95%	+26.09%
Max Drawdown (10Y) Largest decline over 10 years	-51.10%	-78.53%	+27.43%
Current Drawdown Current decline from peak	-24.93%	-77.35%	+52.42%
Average Drawdown Average peak-to-trough decline	-52.20%	-78.45%	+26.25%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.03%	10.87%	-5.84%

Volatility

SMOG vs. TAN - Volatility Comparison

The current volatility for VanEck Low Carbon Energy ETF (SMOG) is 7.38%, while Invesco Solar ETF (TAN) has a volatility of 11.99%. This indicates that SMOG experiences smaller price fluctuations and is considered to be less risky than TAN based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SMOG	TAN	Difference
Volatility (1M) Calculated over the trailing 1-month period	7.38%	11.99%	-4.61%
Volatility (6M) Calculated over the trailing 6-month period	18.49%	29.71%	-11.22%
Volatility (1Y) Calculated over the trailing 1-year period	22.55%	39.21%	-16.66%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	25.44%	40.14%	-14.70%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	25.77%	38.27%	-12.50%

SMOG vs. TAN - Expense Ratio Comparison

SMOG has a 0.61% expense ratio, which is lower than TAN's 0.69% expense ratio.

Dividends

SMOG vs. TAN - Dividend Comparison

SMOG's dividend yield for the trailing twelve months is around 1.51%, while TAN has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
SMOG VanEck Low Carbon Energy ETF	1.51%	1.57%	1.64%	1.58%	1.32%	0.44%	0.06%	0.00%	0.62%	1.25%	2.12%	0.56%
TAN Invesco Solar ETF	0.00%	0.00%	0.50%	0.09%	0.00%	0.00%	0.09%	0.30%	0.69%	1.77%	5.04%	1.60%

Frequently Asked Questions

Can I hold both SMOG and TAN in my portfolio?

SMOG and TAN have a correlation of 0.76, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, SMOG or TAN?

TAN has higher volatility (11.99%) compared to SMOG (7.38%). In terms of maximum drawdown, SMOG dropped -84.39% vs TAN's -95.29%.

Which ETF is better, SMOG or TAN?

On 10-year performance, SMOG leads with 11.20% vs 9.52% for TAN. On fees, SMOG is cheaper at 0.61% per year. On volatility, SMOG has been the lower-risk option at 7.38%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, SMOG or TAN?

Over the 10-year period, SMOG has performed better with a 11.20% return vs 9.52%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, SMOG or TAN?

SMOG is cheaper with a 0.61% expense ratio, compared with 0.69% for TAN.

Which ETF pays a higher dividend yield, SMOG or TAN?

SMOG has the higher dividend yield at 1.51%, compared with 0.00% for TAN.

What is the main difference between SMOG and TAN?

SMOG tracks MVIS Global Low Carbon Energy Index, while TAN tracks MAC Global Solar Energy Index. They also come from different issuers: VanEck and Invesco. Their fees differ too: 0.61% for SMOG and 0.69% for TAN.

Which has better risk-adjusted returns?

SMOG currently has the higher Sharpe Ratio (0.95 vs 0.87), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.