<PAGE>
000 A000000 01/31/97
000 C000000 0000877232
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0
000 J000000 U
001 A000000 GREEN CENTURY FUNDS
001 B000000 811-06351
001 C000000 6174820800
002 A000000 29 TEMPLE PLACE
002 B000000 BOSTON
002 C000000 MA
002 D010000 02111
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 Y
007 B000000 2
007 C010100 1
007 C010200 2
007 C010300 3
007 C020300 EQUITY FUND
007 C030300 N
007 C010400 4
007 C010500 5
007 C010600 6
007 C010700 7
007 C010800 8
007 C010900 9
007 C011000 10
022 A000001 DOMINI SOCIAL INDEX PORTFOLIO
022 B000001 04-3081260
022 C000001 818
022 D000001 78
022 C000002 0
022 D000002 0
022 C000003 0
022 D000003 0
022 C000004 0
022 D000004 0
022 C000005 0
022 D000005 0
022 C000006 0
022 D000006 0
022 C000007 0
022 D000007 0
022 C000008 0
<PAGE>
022 D000008 0
022 C000009 0
022 D000009 0
022 C000010 0
022 D000010 0
023 C000000 818
023 D000000 78
062 A00AA00 N
062 B00AA00 0.0
062 C00AA00 0.0
062 D00AA00 0.0
062 E00AA00 0.0
062 F00AA00 0.0
062 G00AA00 0.0
062 H00AA00 0.0
062 I00AA00 0.0
062 J00AA00 0.0
062 K00AA00 0.0
062 L00AA00 0.0
062 M00AA00 0.0
062 N00AA00 0.0
062 O00AA00 0.0
062 P00AA00 0.0
062 Q00AA00 0.0
062 R00AA00 0.0
077 A000000 N
028 A010300 124
028 A020300 0
028 A030300 0
028 A040300 1
028 B010300 35
028 B020300 0
028 B030300 0
028 B040300 13
028 C010300 94
028 C020300 0
028 C030300 0
028 C040300 14
028 D010300 165
028 D020300 0
028 D030300 0
028 D040300 23
028 E010300 120
028 E020300 3
028 E030300 0
028 E040300 15
028 F010300 276
028 F020300 0
028 F030300 0
028 F040300 2
028 G010300 814
<PAGE>
028 G020300 3
028 G030300 0
028 G040300 68
028 H000300 0
071 A000300 0
071 B000300 0
071 C000300 0
071 D000300 0
072 A000300 6
072 B000300 0
072 C000300 0
072 D000300 0
072 E000300 9
072 F000300 0
072 G000300 8
072 H000300 0
072 I000300 0
072 J000300 0
072 K000300 0
072 L000300 0
072 M000300 0
072 N000300 0
072 O000300 0
072 P000300 0
072 Q000300 0
072 R000300 0
072 S000300 0
072 T000300 0
072 U000300 0
072 V000300 0
072 W000300 0
072 X000300 8
072 Y000300 0
072 Z000300 1
072AA000300 3
072BB000300 0
072CC010300 287
072CC020300 0
072DD010300 3
072DD020300 0
072EE000300 1
073 A010300 0.0250
073 A020300 0.0000
073 B000300 0.0070
073 C000300 0.0000
074 A000300 0
074 B000300 0
074 C000300 0
074 D000300 0
074 E000300 0
074 F000300 0
<PAGE>
074 G000300 0
074 H000300 0
074 I000300 1919
074 J000300 0
074 K000300 0
074 L000300 0
074 M000300 0
074 N000300 1919
074 O000300 0
074 P000300 0
074 Q000300 0
074 R010300 0
074 R020300 0
074 R030300 0
074 R040300 2
074 S000300 0
074 T000300 1917
074 U010300 138988
074 U020300 0
074 V010300 13.79
074 V020300 0.00
074 W000300 0.0000
074 X000300 285
074 Y000300 0
075 A000300 0
075 B000300 1301
076 000300 0.00
SIGNATURE JOHN R. ELDER
TITLE TREASURER
<TABLE> <S> <C>
<ARTICLE> 6
<LEGEND>
This schedule contains summary financial information extracted from the
January 31, 1997 Green Centruy Equity Fund Semi-Annual Report and is qualified
in its entirety by reference to such report.
</LEGEND>
<CIK> 0000877232
<NAME> GREEN CENTURY FUNDS
<SERIES>
<NUMBER> 3
<NAME> GREEN CENTURY EQUITY FUND
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> JUL-31-1997
<PERIOD-START> AUG-01-1996
<PERIOD-END> JAN-31-1997
<INVESTMENTS-AT-COST> 1,630,624
<INVESTMENTS-AT-VALUE> 1,918,550
<RECEIVABLES> 0
<ASSETS-OTHER> 0
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 1,918,550
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 1,569
<TOTAL-LIABILITIES> 1,569
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 1,625,694
<SHARES-COMMON-STOCK> 138,988
<SHARES-COMMON-PRIOR> 79,698
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 1,405
<ACCUMULATED-NET-GAINS> 4,766
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 287,926
<NET-ASSETS> 1,916,981
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 0
<OTHER-INCOME> 10,866
<EXPENSES-NET> 9,724
<NET-INVESTMENT-INCOME> 1,142
<REALIZED-GAINS-CURRENT> 2,918
<APPREC-INCREASE-CURRENT> 287,008
<NET-CHANGE-FROM-OPS> 291,068
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 2,942
<DISTRIBUTIONS-OF-GAINS> 824
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 64,496
<NUMBER-OF-SHARES-REDEEMED> 5,456
<SHARES-REINVESTED> 250
<NET-CHANGE-IN-ASSETS> 1,037,254
<ACCUMULATED-NII-PRIOR> 395
<ACCUMULATED-GAINS-PRIOR> 2,672
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 0
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 9,724
<AVERAGE-NET-ASSETS> 1,346,477
<PER-SHARE-NAV-BEGIN> 11.04
<PER-SHARE-NII> 0.005
<PER-SHARE-GAIN-APPREC> 2.777
<PER-SHARE-DIVIDEND> 0.025
<PER-SHARE-DISTRIBUTIONS> 0.007
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 13.79
<EXPENSE-RATIO> 1.50
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>
