ID Task Name Duration Start Finish

1 KEY MILESTONES 993 days 7/10/19 4/30/232 Maui Electric Awards Project 0 days 5/8/20 5/8/20

3 PPA Negotiations Commence 0 days 5/15/20 5/15/20

4 PPA Negotiations Complete 0 days 8/15/20 8/15/20

5 PUC Filing Submitted 0 days 9/15/20 9/15/20

6 PUC Approved 0 days 3/31/21 3/31/21

7 ITC Safe Harbor Achieved 0 days 12/31/21 12/31/21

8 Notice to Proceed Issued (Construcion) 0 days 3/31/22 3/31/22

9 Planned Commercial Operation Date 0 days 2/28/23 2/28/23

10 Guaranteed Commercial Operation Date 61 days 3/1/23 4/30/23

11 PPA Attachment K & L 928 days 7/10/19 1/30/2312 Construction Financing 0 days 2/17/22 2/17/22

13 Permit Application Filing Submitted 0 days 12/22/20 12/22/20

14 Right of Entry to Company-Owned Interconnection Facilities site 0 days 7/10/19 7/10/19

15 Grading Permit Obtained 0 days 12/28/21 12/28/21

16 All Permits (other than any required occupancy permits) 0 days 1/31/22 1/31/22

17 Station Service Power 0 days 7/10/19 7/10/19

18 Backup SCADA communications Installed 0 days 9/23/22 9/23/22

19 Company's substation Ready for Interconnect 0 days 10/7/22 10/7/22

20 Test Ready Deadline 0 days 1/30/23 1/30/23

21 Grading Permit Closed 0 days 8/26/22 8/26/22

22 Acceptance Testing Commencement 0 days 1/30/23 1/30/23

23 Company-Owned Interconnection Energized 0 days 1/30/23 1/30/23

24 Engineering, Procurement & Construction Agreements Issued 0 days 12/4/20 12/4/20

25 Inverter Agreement Issued to Company 0 days 1/21/21 1/21/21

26 Building Permit Obtained 0 days 1/27/22 1/27/22

27 Construction Work Start 0 days 4/4/22 4/4/22

28 Interconnection Foundations Complete 0 days 6/3/22 6/3/22

29 All Inverters Installed 0 days 10/14/22 10/14/22

30 Step-Up Transformer Installed 0 days 11/4/22 11/4/22

31 DEVELOPMENT \ PRE-CONSTRUCTION 993 days 7/10/19 4/29/2332 RFP 218 days 7/10/19 5/8/2033 Prep\Submit IPP Proposal 85 days 7/10/19 11/5/19

34 Maui Electrical Selects Priority List 53 days 11/6/19 1/17/20

35 Prepare \ Submit BAFOs 5 days 1/20/20 1/24/20

36 Maui Electric Selects Final Award Group 75 days 1/27/20 5/8/20

37 Financing 240 days 4/30/21 3/31/2238 Shortlist Lenders & Negotiate Indicative Terms 20 days 4/30/21 5/27/21

39 Negotiate \ Execute Common Terms Agreement 190 days 5/28/21 2/17/22

40 Complete Financial Closure Checklist 30 days 2/18/22 3/31/22

41 Environmental Compliance and Permitting Plan 669 days 7/10/19 1/31/2242 Develop Overall Land Use & Environmental Review Strategy 75 days 7/10/19 10/22/19

43 Prep\Submit\Approve Hawaii Revised Statutes (HRS) 265 days 9/30/20 10/5/21

44 Prep\Submit\Approve NPDES Permit 220 days 2/3/21 12/7/21

45 Prep\Submit\Approve County Special Use Permit (CUP) 220 days 2/3/21 12/7/21

46 Prep\Submit\Approve Building Permit 250 days 2/12/21 1/27/22

47 Prep\Submit\Approve Grading Permit 180 days 4/21/21 12/28/21

48 Prep\Submit\Approve Electrical Permit 180 days 5/25/21 1/31/22

49 Community Outreach\Engagement and Cultural Resource Impacts 993 days 7/10/19 4/29/2350 Cultural Impact Assessment 42 days 8/3/20 9/29/2051 Conduct an Archaeological Review 42 days 8/3/20 9/29/20

52 Conduct Cultural Impact Assessment & Mitigation 42 days 8/3/20 9/29/20

53 Community Engagement\Outreach 993 days 7/10/19 4/29/2354 Develop Preliminary Community Outreach Strategy 75 days 7/10/19 10/22/19

55 Initial Community Outreach (Including Hearings) 169 days 5/11/20 12/31/20

56 Ongoing Community Outreach 849 days 1/1/21 4/29/23

57 Project Agreements 229 days 5/15/20 3/31/2158 Power Purchase Agreement (PPA) 229 days 5/15/20 3/31/2159 Execute PPA 99 days 5/15/20 8/15/20

Maui Electric Awards Project

PPA Negotiations Commence

PPA Negotiations Complete

PUC Filing Submitted

PUC Approved

ITC Safe Harbor Achieved

Notice to Proceed Issued (Construcion)

Planned Commercial Operation Date

Construction Financing

Permit Application Filing Submitted

Grading Permit Obtained

All Permits (other than any required occupancy permits)

Backup SCADA communications Installed

Company's substation Ready for Interconnect

Test Ready Deadline

Grading Permit Closed

Acceptance Testing Commencement

Company-Owned Interconnection Energized

Engineering, Procurement & Construction Agreements Issued

Inverter Agreement Issued to Company

Building Permit Obtained

Construction Work Start

Interconnection Foundations Complete

All Inverters Installed

Step-Up Transformer Installed

J A S O N D J F M A M J J A S O N D J F M A M J J A S O N D J F M A M J J A S O N D J F M A M J J A S O N D2020 2021 2022 2023

Task Milestone Critical Critical Split Progress

Solar PV + BESS ProjectMaui Electric

RFP Submission 5-Nov-2019

Page 1 of 3 11/3/19

Project: Solar + BESS DRAFT TYDate: 11/3/19

618

ID Task Name Duration Start Finish

60 Submit\Approve PUC Filing 109 days 10/30/20 3/31/21

61 Negotiate Long Lead Material Agreement (Modules, Inverters, etc.) 180 days 5/15/20 1/21/21

62 Interconnection Agreement 1 day 5/15/20 5/15/20

63 Shared Facilities Agreements (utilities, t-line, substation, access roads) 1 day 5/15/20 5/15/20

64 Engage Consultants 56 days 5/15/20 7/31/20

65 Engineering and Construction Agreements 90 days 8/3/20 12/4/2066 Engage Engineering Firm 40 days 8/3/20 9/25/20

67 Engage Construction Firms 80 days 8/17/20 12/4/20

68 Preliminary Project Design 80 days 8/3/20 11/20/2069 Develop Preliminary Engineering and Drainage Study 80 days 8/3/20 11/20/20

70 Determine Site Layout 20 days 8/3/20 8/28/20

71 Studies and Reports 266 days 5/13/20 5/19/2172 Transmission System Stability Study 76 days 5/15/20 8/28/20

73 Interconnection Requirements Study (“IRS”) 266 days 5/13/20 5/19/21

74 Greenhouse Gas Emissions Analysis \ GHG Review 76 days 5/15/20 8/28/20

75 Energy resource assessment 76 days 5/15/20 8/28/20

76 Site Control 114 days 5/8/20 10/15/2077 Finalize Site Coordinates 0 days 5/8/20 5/8/20

78 Fence Line 14 days 5/11/20 5/28/20

79 Finalize Land Lease Agreement 100 days 5/29/20 10/15/20

80 ENGINEERING, PROCUREMENT & CONSTRUCTION 582 days 9/28/20 12/20/2281 Engineering & Design 105 days 9/28/20 2/19/2182 Conduct Topograohic survey 30 days 9/28/20 11/6/20

83 Conduct Engineering Studies (hydrological, geotechnical, etc.) 20 days 9/28/20 10/23/20

84 Develop Detailed Civil Design 75 days 10/26/20 2/5/21

85 Develop Detailed Electrical Design 85 days 10/26/20 2/19/21

86 Develop Detailed Mechanical Design 30 days 1/11/21 2/19/21

87 Long Lead Procurement 246 days 1/22/21 12/31/2188 Procure\Start Fab Modules 70 days 9/27/21 12/31/21

89 Procure\Start Inverter 70 days 9/27/21 12/31/21

90 Procure\Start Transformer 70 days 9/27/21 12/31/21

91 Tracker 70 days 9/27/21 12/31/2192 Procure\Start Poles 70 days 9/27/21 12/31/21

93 Procure\Start Upper Structure 70 days 9/27/21 12/31/21

94 Procure\Start BESS Equipment 70 days 1/22/21 4/29/21

95 Construction 322 days 9/24/21 12/20/2296 Issue LNTP 0 days 9/24/21 9/24/21

97 Issue Construction NTP 0 days 3/31/22 3/31/22

98 Site Work 26 days 4/1/22 5/6/2299 Mobilize 1 day 4/1/22 4/1/22

100 Build Site Fence 10 days 4/4/22 4/15/22

101 Build Access Road 15 days 4/4/22 4/22/22

102 Clear\Grade Site 15 days 4/4/22 4/22/22

103 Build Site Roads 25 days 4/4/22 5/6/22

104 Solar PV 172 days 4/25/22 12/20/22105 Underground Work 50 days 4/25/22 7/1/22106 Trench and Lay LV Cable 50 days 4/25/22 7/1/22

107 Trench and Lay MV\FO Cable 50 days 4/25/22 7/1/22

108 Lay UG Security System Cable\Components 50 days 4/25/22 7/1/22

109 Excavate\Form\Embed\Pour Remaining Foundations 25 days 7/4/22 8/5/22

110 Converter Units 147 days 5/30/22 12/20/22111 Excavate\Form\Embed\Pour Foundations 65 days 5/30/22 8/26/22

112 Install Poles 65 days 7/11/22 10/7/22

113 Erect Upper Structures 70 days 8/9/22 11/14/22

114 Assemble Modules 70 days 9/14/22 12/20/22

115 Electrical & Communication Work 90 days 7/4/22 11/4/22116 Install Inverter 50 days 8/8/22 10/14/22

117 Install Transformer 65 days 8/8/22 11/4/22

118 Install MV Circuits 70 days 7/4/22 10/7/22

Finalize Site Coordinates

Issue LNTP

Issue Construction NTP

J A S O N D J F M A M J J A S O N D J F M A M J J A S O N D J F M A M J J A S O N D J F M A M J J A S O N D2020 2021 2022 2023

Task Milestone Critical Critical Split Progress

Solar PV + BESS ProjectMaui Electric

RFP Submission 5-Nov-2019

Page 2 of 3 11/3/19

Project: Solar + BESS DRAFT TYDate: 11/3/19

619

ID Task Name Duration Start Finish

119 Install FO Circuits 70 days 8/1/22 11/4/22

120 Install DC Circuits 80 days 7/4/22 10/21/22

121 Install Security System 50 days 7/4/22 9/9/22

122 Install SCADA 60 days 7/4/22 9/23/22

123 BESS 125 days 4/25/22 10/14/22124 Excavate\Form\Embed\Pour Foundations 20 days 4/25/22 5/20/22

125 Construct Storage Facililty 75 days 5/23/22 9/2/22

126 Install Battery Components 60 days 7/25/22 10/14/22

127 Interconnection 105 days 5/16/22 10/7/22128 Excavate\Form\Embed\Pour Foundations 15 days 5/16/22 6/3/22

129 Set\Connect Equipment 50 days 6/6/22 8/12/22

130 Testing 40 days 8/15/22 10/7/22

131 COMMISSIONING & START-UP 93 days 12/21/22 4/30/23132 Complete QC Inspections and AHJ Sign Off 40 days 12/21/22 1/29/23

133 Energize 0 days 1/30/23 1/30/23

134 Conduct Acceptance Testing 30 days 1/30/23 2/28/23

135 Planned Commerical Operation Date 0 days 2/28/23 2/28/23

136 Guaranteed Commercial Operation Date 61 days 3/1/23 4/30/23

137 OPERATIONS and MAINTENANCE 140 days 2/18/22 9/1/22138 Develop O&M Strategy 20 days 2/18/22 3/17/22

139 Hire\Train O&M Staff 120 days 3/18/22 9/1/22

140 Purchase Spare Parts 120 days 3/18/22 9/1/22

Energize

Planned Commerical Operation Date

J A S O N D J F M A M J J A S O N D J F M A M J J A S O N D J F M A M J J A S O N D J F M A M J J A S O N D2020 2021 2022 2023

Task Milestone Critical Critical Split Progress

Solar PV + BESS ProjectMaui Electric

RFP Submission 5-Nov-2019

Page 3 of 3 11/3/19

Project: Solar + BESS DRAFT TYDate: 11/3/19

620