The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE

OMB APPROVAL
OMB Number:3235-0006
Expires:Oct 31, 2018
Estimated average burden
hours per response:23.8

COLUMN 1COLUMN 2COLUMN 3COLUMN 4COLUMN 5COLUMN 6COLUMN 7COLUMN 8
VALUESHRS ORSH/PUT/INVESTMENTOTHERVOTING AUTHORITY
NAME OF ISSUERTITLE OF CLASSCUSIP(x$1000)PRN AMTPRNCALLDISCRETIONMANAGERSOLESHAREDNONE
Advanced Drainage Systems Inccs00790R1041,27211,758SH SOLE 11,75800
Aecomcs00766T1005508,716SH SOLE 8,71600
Aemetis Inccs00770K20208SH SOLE 800
Aes Corp Comcs00130H105299SH SOLE 9900
Aes Corp Comcs00130H1055,643247,177SH DFND3247,17700
Algonquin Power & Utilitiescs01585710518,1461,237,544SH DFND3903,7660333,778
Algonquin Power & Utilitiescs015857105865,854SH SOLE 5,85400
Alliant Energy Corpcs0188021083,92870,173SH DFND370,17300
Altus Midstream Companycs02215L20947678SH SOLE 67800
American Electric Power Companycs0255371013,82747,139SH SOLE 47,13900
American Electric Power Companycs02553710111,429140,786SH DFND387,499053,287
American Water Works Companycs0304201032,22313,153SH SOLE 13,15300
American Water Works Companycs0304201033,17418,778SH DFND318,77800
Antero Midstream Corporationcs03676B10222,5262,161,773SH SOLE 2,161,77300
Archaea Energy Inccs03940F1033,483183,900SH SOLE 183,90000
ArcLight Clean Transition CorpcsG0R21B1042,067211,784SH SOLE 211,78400
ArcLight Clean Transition CorpwarrantsG0R21B1124442,357SH SOLE 42,35700
Array Technologies Inccs04271T100138SH SOLE 3800
ATLANTICA SUSTAINABLE INFR PLCcsG0751N10318,561537,835SH SOLE 537,83500
ATLANTICA SUSTAINABLE INFR PLCcsG0751N10316,092466,307SH DFND3391,044075,263
AUTODESK INCcs05276910610,13335,533SH DFND335,53300
Badger Meter, Inc.cs0565251085355,291SH SOLE 5,29100
Baker Hughes Cocs05722G10046918,985SH SOLE 18,98500
Ballard Power Systems Inc.cs058586108342,407SH SOLE 2,40700
Blink Charging Cocs09354A100125SH SOLE 2500
Bloom Energy Corpcs093712107131SH SOLE 3100
Bluescape Opportunities AcquisitioncsG1195N1051,578160,990SH SOLE 160,99000
Bluescape Opportunities AcquisitionwarrantsG1195N113168165,927SH SOLE 165,92700
BP Midstream Partners LPlp0556EL1098,890670,934SH SOLE 670,93400
BP PLC-Spons ADRad05562210495835,054SH SOLE 35,05400
Brookfield Renewable Corpcs11284V1058,452217,577SH DFND3175,014042,563
BROOKFIELD RENEWABLE PARTNERSlpG162581089,840266,587SH DFND3266,58700
Canadian Natural Resources Ltdcs13638510104SH SOLE 400
Canadian Solarcs136635109116SH SOLE 1600
Centerpoint Energy Inccs15189T1074,170169,528SH SOLE 169,52800
ChargePoint Holdings Inccs15961R105135SH SOLE 3500
Chart Industries, Inc.cs16115Q30801SH SOLE 100
Cheniere Energy Inc.cs16411R208443,5184,540,985SH SOLE 3,877,3090663,676
Cheniere Energy Partners LPlp16411Q10119,999491,731SH SOLE 467,177024,554
Cheniere Energy Partners LPlp16411Q1013,30981,372SH OTR181,37200
Chevron Corpcs1667641002,86128,200SH SOLE 28,20000
Clean Energy Fuels Corpcs18449910124329,800SH SOLE 29,80000
Clearway Energy, Inc.cs18539C20427,313902,321SH SOLE 902,32100
Climate Real Impact Solutionscs1871711031,639167,601SH SOLE 167,60100
Climate Real Impact Solutionswarrants1871711117167,634SH SOLE 67,63400
ConocoPhillipscs20825C10415,040221,934SH SOLE 221,93400
Continental Resources Inccs21201510147210,234SH SOLE 10,23400
Coterra Energy Inc.cs12709710345921,071SH SOLE 21,07100
COVANTA HLDG CORPcs22282E1021145,645SH SOLE 5,64500
COVANTA HLDG CORPcs22282E10246,6182,316,999SH DFND32,072,8500244,149
Crestwood Equity Partners LPlp22634420870,3882,480,201SH SOLE 2,091,1260389,075
Crestwood Equity Partners LPlp2263442082,77197,635SH OTR197,63500
Cummins Inc.cs23102110628SH SOLE 800
Danaher Corporationcs2358511021,8566,096SH SOLE 6,09600
Darling Ingredients Inccs2372661012393,328SH SOLE 3,32800
DCP Midstream LPlp23311P100256,9129,100,674SH SOLE 7,872,70101,227,973
DCP Midstream LPlp23311P1007,054249,877SH OTR1249,87700
Delek Logistics Partners LPlp24664T1032585,695SH SOLE 4,9550740
Delek Logistics Partners LPlp24664T1035,868129,729SH OTR1129,72900
Denbury Inccs24790A1014666,635SH SOLE 6,63500
Devon Energy Corporationcs25179M1032,87781,026SH SOLE 81,02600
Diamondback Energy Inccs25278X1093,52237,207SH SOLE 37,20700
Diversey Holdings LtdcsG2892310343727,228SH SOLE 27,22800
Dominion Energy Inc.cs25746U10931418SH SOLE 41800
Dominion Energy Inc.cs25746U1097,305100,041SH DFND3100,04100
DT Midstream Inccs23345M10724,923539,003SH SOLE 472,305066,698
DTE Energy Companycs2333311074,58040,996SH SOLE 40,99600
DTE Energy Companycs2333311073,89334,851SH DFND334,85100
Ecolab Inc.cs2788651001,1675,593SH SOLE 5,59300
EDISON INTL COMcs28102010728497SH SOLE 49700
EDISON INTL COMcs28102010714,996270,337SH DFND3270,33700
Enable Midstream Partners LPlp29248010012,9931,600,066SH SOLE 1,422,6080177,458
Enable Midstream Partners LPlp2924801004,084502,920SH OTR1502,92000
Enbridge Inccs29250N105200,0505,026,372SH SOLE 4,785,0270241,345
Energy Transfer LPlp29273V100423,80944,238,927SH SOLE 37,492,12406,746,803
Energy Transfer LPlp29273V1009,561998,006SH OTR1998,00600
Enlink Midstream, LLCcs29336T10041,0746,022,564SH SOLE 4,838,66601,183,898
Enphase Energycs29355A10714SH SOLE 400
Enterprise Products Partners LPlp293792107329,43215,223,282SH SOLE 13,134,39102,088,891
Enterprise Products Partners LPlp2937921078,668400,540SH OTR1400,54000
Enviva Partners LPlp29414J10719,692364,069SH SOLE 364,06900
EOG Resources Inccs26875P1012,77834,609SH SOLE 34,60900
EQT Corpcs26884L10911,850579,200SH SOLE 579,20000
Equitrans Midstream Corporationcs29460010176,6837,562,404SH SOLE 7,238,8090323,595
ESM Acquisition CorpcsG3195H1042,067211,743SH SOLE 211,74300
ESM Acquisition CorpwarrantsG3195H1124670,581SH SOLE 70,58100
Essential Utilities Inccs29670G1021,68836,628SH SOLE 36,62800
Essential Utilities, Inc.ps29670G2015,808101,207SH DFND352,074049,133
Evergy Inccs30034W1065,70691,735SH DFND391,73500
Eversource Energycs30040W1081261,543SH SOLE 1,54300
Eversource Energycs30040W1085,04761,727SH DFND361,72700
EVgo Inc.cs30052F1008,1501,000,000SH SOLE 1,000,00000
EVgo Inc.warrants30052F118376210,000SH SOLE 210,00000
Evoqua Water Technologies Corpcs30057T1051,18431,521SH SOLE 31,52100
EXELON CORPcs30161N10134,465712,964SH DFND3712,96400
Exxon Mobil Corpcs30231G1022,80747,719SH SOLE 47,71900
First Solar Inccs33643310718SH SOLE 800
First Solar Inccs3364331072,69828,267SH DFND328,26700
Flame Acquisition Corpcs33850F1081,740179,000SH SOLE 179,00000
Flame Acquisition Corpwarrants33850F1165489,500SH SOLE 89,50000
Fortune Brand Home & Securitycs34964C1063834,285SH SOLE 4,28500
FuelCell Energy Inccs35952H601176SH SOLE 7600
Generac Holdings Inc.cs36873610470171SH SOLE 17100
Genesis Energy L.P.lp37192710447,6654,780,873SH SOLE 3,699,39001,081,483
Genesis Energy L.P.lp3719271042,662266,990SH OTR1266,99000
Global Partners LPlp37946R10982639,011SH SOLE 31,60607,405
Hess Midstream LPcs42810310518,319649,372SH SOLE 649,37200
Holly Energy Partners, L.P.lp4357631079,189501,293SH SOLE 501,29300
Hyliion Holdings Corpcs4491091071,277151,992SH SOLE 151,99200
IDEX Corporationcs45167R1049304,492SH SOLE 4,49200
Kinder Morgan Inccs49456B101257,48615,390,695SH SOLE 14,473,3210917,374
Lilium NVwarrantsN5258611716472,512SH SOLE 72,51200
Lindsay Corporationcs5355551066434,237SH SOLE 4,23700
LYFT INCcs55087P1048,866165,441SH DFND3165,44100
Magellan Midstream Partners, L.P.lp559080106278,3386,106,575SH SOLE 5,315,3640791,211
Magellan Midstream Partners, L.P.lp5590801068,753192,036SH OTR1192,03600
Marathon Oil Corpcs565849106010SH SOLE 1000
Marathon Petroleum Corpcs56585A10232518SH SOLE 51800
Masco Corporationcs5745991062324,184SH SOLE 4,18400
Middlesex Water Cocs5966801083563,463SH SOLE 3,46300
Montrose Environmental Groupcs6151111012814,556SH SOLE 4,55600
MPLX LPlp55336V100450,24215,814,613SH SOLE 13,532,79602,281,817
MPLX LPlp55336V1009,775343,342SH OTR1343,34200
Mueller Water Products, Inc.cs62475810896063,046SH SOLE 63,04600
New Fortress Energy Inc.cs6443931007,527271,245SH SOLE 271,24500
Nextera Energy Incps65339F7965,85299,840SH DFND370,940028,900
NextEra Energy Partners, LPlp65341B10689,5061,187,715SH SOLE 1,136,904050,811
NextEra Energy Partners, LPlp65341B10617,778235,907SH DFND3235,90700
NextEra Energy, Inc.ps65339F7395,679111,111SH SOLE 111,11100
NextEra Energy, Inc.cs65339F1011,82023,185SH SOLE 23,18500
NextEra Energy, Inc.cs65339F10149,609631,804SH DFND3631,80400
NGL Energy Partners LPlp62913M1079540,237SH SOLE 31,04609,191
Northern Genesis Acquisition Corpcs66516W1072,394246,566SH SOLE 246,56600
Northern Genesis Acquisition Corpwarrants66516W1155561,642SH SOLE 61,64200
NuStar Energy L.P.lp67058H102131,1658,333,212SH SOLE 7,357,1190976,093
NuStar Energy L.P.lp67058H1025,235332,570SH OTR1332,57000
Occidental Petroleum Corpcs67459910594031,775SH SOLE 31,77500
ONEOK, Inccs682680103429,7087,410,031SH SOLE 6,495,9190914,112
ONEOK, Inccs6826801034,80982,930SH OTR182,93000
Ovintiv Inc.cs69047Q102118SH SOLE 1800
PBF Logistics LPlp69318Q10462549,521SH SOLE 49,52100
PDC Energy Inccs69327R1014719,932SH SOLE 9,93200
Pembina Pipeline Corporationcs706327103129,1654,074,666SH SOLE 3,644,6820429,984
PENTAIR INCcsG7S00T1041,46820,213SH SOLE 20,21300
Peridot Acquisition Corp IIcsG7008B1051,850190,568SH SOLE 190,56800
Peridot Acquisition Corp IIwarrantsG7008B1213138,113SH SOLE 38,11300
Phillips 66 Partners LPlp71854920771,0381,981,540SH SOLE 1,823,4060158,134
Phillips 66 Partners LPlp7185492072,71775,780SH OTR175,78000
Pioneer Natural Resources Cocs72378710714,94789,766SH SOLE 89,76600
Plains All American Pipelinelp726503105260,16725,581,785SH SOLE 20,336,67405,245,111
Plains All American Pipelinelp7265031059,668950,592SH OTR1950,59200
Plains GP Holdings, L.P.cs72651A207140,13613,005,678SH SOLE 12,671,8530333,825
Plug Power Inccs72919P202124SH SOLE 2400
PPL Corporationcs69351T1064,559163,520SH DFND3163,52000
Public Service Enterprise Groupcs74457310639638SH SOLE 63800
Public Service Enterprise Groupcs7445731068,595141,138SH DFND3141,13800
QuantumScape Corpcs74767V109129SH SOLE 2900
RENEW ENERGY GLOBAL PLCcsG7500M1048,329816,561SH DFND3816,56100
Renewable Energy Group Inccs75972A30140803SH SOLE 80300
RMG Acquisition Corp IIIcsG760881062,061211,768SH SOLE 211,76800
RMG Acquisition Corp IIIwarrantsG760881223942,354SH SOLE 42,35400
Royal Dutch Shell PLCad7802592061,45232,567SH SOLE 32,56700
Sempra Energycs81685110914,531114,869SH SOLE 114,86900
Shell Midstream Partners LPlp82263410126,0092,209,746SH SOLE 2,209,74600
Shell Midstream Partners LPlp8226341014,854412,440SH OTR1412,44000
Shoals Technologies Group Inccs82489W107128SH SOLE 2800
SolarEdge Technologies Inccs83417M10412SH SOLE 200
Stantec Inc.cs85472N10955511,819SH SOLE 11,81900
Stem, Inc.cs85859N102532,232SH SOLE 2,23200
Stem, Inc.cs85859N1026,240261,210SH DFND3261,21000
Sunnova Energy Internationalcs86745K1044,853147,323SH SOLE 147,32300
Sunoco LPlp86765K109521,390SH SOLE 001,390
SUNRUN INC COMcs86771W105491,107SH SOLE 1,10700
SUNRUN INC COMcs86771W10520,039455,439SH DFND3455,43900
Sustainable Development Acquisitioncs86934L1032,231228,542SH SOLE 228,54200
Sustainable Development Acquisitionwarrants86934L11174114,269SH SOLE 114,26900
Targa Resources Corp.cs87612G101482,3329,801,506SH SOLE 8,514,50901,286,997
TC Energy Corp.cs87807B107109,8612,284,494SH SOLE 2,234,454050,040
TE CONNECTIVITY LTDcsH8498910411,45483,471SH DFND383,47100
Tech and Energy Transition Corpcs87823R1024,513461,899SH SOLE 461,89900
Tech and Energy Transition Corpwarrants87823R110100153,967SH SOLE 153,96700
Tesla Inc.cs88160R10123SH SOLE 300
Tetra Tech, Inc.cs88162G1031,2728,515SH SOLE 8,51500
The York Water Cocs9871841082054,682SH SOLE 4,68200
TPI Composites Inccs87266J104126SH SOLE 2600
TRANE TECHNOLOGIES PLCcsG8994E1035,09529,508SH DFND329,50800
USD Partners LPlp9033181031,582253,538SH OTR1253,53800
Valero Energy Corpcs91913Y10013182SH SOLE 18200
Volta Inc.cs92873V1026,488750,000SH SOLE 750,00000
Warrior Technologies Acquisitioncs9362731012,498254,657SH SOLE 254,65700
Warrior Technologies Acquisitionwarrants93627311970127,326SH SOLE 127,32600
Western Midstream Partners LPlp958669103290,89313,878,489SH SOLE 11,940,69601,937,793
Western Midstream Partners LPlp9586691038,588409,749SH OTR1409,74900
Westlake Chemical Partners LPlp9604171033,118128,091SH SOLE 128,09100
Williams Companies, Inccs969457100327,80412,637,027SH SOLE 11,665,8660971,161
Williams Companies, Inccs9694571004,701181,208SH DFND3181,20800
Xcel Energycs98389B1001692,707SH SOLE 2,70700
Xylem Inc.cs98419M1001,99216,108SH SOLE 16,10800