Exhibit 99.1

PowerBank
Announces 60 MWh of Battery Energy Storage Capacity Across Three New Upstate New York Projects
Projects
Expected to Be Eligible for NYSERDA Retail Storage Incentive Program
Toronto,
Ontario, May 21, 2026 — PowerBank Corporation (NASDAQ: SUUN; Cboe CA: SUNN, FSE: 103) (“PowerBank” or the
“Company”), a leader in North American energy infrastructure development and asset ownership, is pleased to announce
that it has executed three lease agreements on battery energy storage systems (BESS), known as the Round Hill Rd project, the Montana
Rd project and Genesee Rd project (the “Projects”), in upstate New York. Each project has the capacity to hold up
to 5 MW AC and discharge over 4 hours, totaling 60 megawatt hours (MWh) of combined battery energy storage capacity. The Projects are
expected to be eligible for incentives under the New York State Energy Research and Development Authority (“NYSERDA”)
Retail Storage Incentive Program and compensation under New York’s Value of Distributed Energy Resources (VDER) mechanism.
Battery
energy storage is one of the fastest-growing power technologies in the world today. According to the IEA’s Global Energy Review
2026, 108 GW of new capacity was deployed globally in 2025 — a 40% year-over-year increase — bringing total installed
capacity to eleven times its 2021 level.¹ In the United States, 18.9 GW was installed in 2025, up 52% from 2024, with 500 GWh of
additional capacity projected between 2026 and 2031.² Two factors are driving this growth: the need to balance a grid increasingly
supplied by variable renewable sources, and rising electricity demand from AI data centers, which has been identified as a contributing
driver for the 353 GWh of new global storage capacity expected in 2026.³ California, Massachusetts, and New York are among the leading
U.S. storage markets, supported in part by state programs such as the NYSERDA Retail Storage Incentive Program.²
The
Company is in the process of initiating the preliminary screening analysis as part of the interconnection process. Assuming receipt of
interconnection approval, the Company will work to complete the permitting process and secure the necessary financing for the construction
of the Projects.
PowerBank’s
proven expertise, with over 100 MW of completed projects and a development pipeline exceeding 1 GW, underpins the project’s execution.
Strategic partnerships and institutional-grade development capabilities position PowerBank to deliver reliable, high-impact renewable
energy solutions.
The
Projects advance New York’s path to 10 GW of distributed solar and 6GW of energy storage by 2030. The State leads the United States
in community solar capacity, having achieved the New York State Climate Act 6 GW solar goal in the fall of 2024.
There
are several risks associated with the development of the Projects. The development of any project is subject to receipt of a community
solar contract, receipt of interconnection approval, receipt of required permits, the availability of third-party financing arrangements
for the Company to finance the construction of the Projects and the risks associated with the construction of a battery energy storage
project. In addition, governments may revise, reduce or eliminate incentives and policy support schemes for battery storage, which could
result in future Projects no longer being economic. Please refer to “Forward-Looking Statements” for additional discussion
of the assumptions and risk factors associated with the Project and statements made in this press release.
About
PowerBank Corporation
PowerBank
Corporation (NASDAQ: SUUN | Cboe CA: SUNN) is a vertically integrated and independent North American clean energy company helping to
power the digital economy. The Company develops, builds, owns, and operates solar and battery energy storage systems that deliver reliable,
resilient, and clean grid and behind-the-meter power to the electricity grid, commercial and industrial clients, electricity grid, and
municipal and residential off-takers. As AI and digital infrastructure drive unprecedented electricity demand, PowerBank is uniquely
positioned to deliver the speed, scale, and energy independence that the next generation of power consumers requires — without
waiting years for grid interconnection. The Company has a potential development pipeline of over one gigawatt and has developed renewable
and clean energy projects with a combined capacity of over 100 megawatts built. To learn more about PowerBank, please visit www.powerbankcorp.com.
Notes
[1]:
International Energy Agency (IEA), Global Energy Review 2026 — https://www.iea.org/reports/global-energy-review-2026/technology-battery-storage
[2]:
American Clean Power Association (ACP) and Wood Mackenzie, U.S. Energy Storage Monitor, March 2026 — https://cleanpower.org/news/report-2025-u-s-energy-storage-installations-set-new-record-surpass-2024-by-52/
[3]:
InfoLink Consulting, as reported in Energy Industry Review, April 2026 — https://energyindustryreview.com/power/battery-storage-capacity-record-growth-and-trends-in-2026/
FORWARD-LOOKING
STATEMENTS
This
news release contains forward-looking statements and forward-looking information within the meaning of Canadian securities legislation
(collectively, “forward-looking statements”) that relate to the Company’s current expectations and views of future
events. Any statements that express, or involve discussions as to, expectations, beliefs, plans, objectives, assumptions or
future events or performance (often, but not always, through the use of words or phrases such as “will likely result”,
“are expected to”, “expects”, “will continue”, “is anticipated”, “anticipates”,
“believes”, “estimated”, “intends”, “plans”, “forecast”, ”projection”,
“strategy”, “objective” and “outlook”) are not historical facts and may be forward-looking statements
and may involve estimates, assumptions and uncertainties which could cause actual results or outcomes to differ materially from
those expressed in such forward-looking statements. In particular and without limitation, this news release contains forward-looking
statements pertaining to the Company’s expectations regarding its industry trends and overall market growth; the Company’s
growth strategies the expected energy production from the projects mentioned in this press release; the receipt of interconnection approval,
permits and financing to be able to construct the Projects; the receipt of incentives for the Projects; and the size of the Company’s
development pipeline. No assurance can be given that these expectations will prove to be correct and such forward-looking statements
included in this news release should not be unduly relied upon. These statements speak only as of the date of this news release.
Forward-looking
statements are based on certain assumptions and analyses made by the Company in light of the experience and perception of historical
trends, current conditions and expected future developments and other factors it believes are appropriate, and are subject to risks and
uncertainties. In making the forward looking statements included in this news release, the Company has made various material assumptions,
including but not limited to: obtaining the necessary regulatory approvals; that regulatory requirements will be maintained; general
business and economic conditions; the Company’s ability to successfully execute its plans and intentions; the availability of financing
on reasonable terms; the Company’s ability to attract and retain skilled staff; market competition; the products and services offered
by the Company’s competitors; that the Company’s current good relationships with its service providers and other third parties
will be maintained; and government subsidies and funding for renewable energy will continue as currently contemplated. Although the Company
believes that the assumptions underlying these statements are reasonable, they may prove to be incorrect, and the Company cannot assure
that actual results will be consistent with these forward-looking statements. Given these risks, uncertainties and assumptions, investors
should not place undue reliance on these forward-looking statements.
Whether
actual results, performance or achievements will conform to the Company’s expectations and predictions is subject to a number of
known and unknown risks, uncertainties, assumptions and other factors, including those listed under “Forward-Looking Statements”
and “Risk Factors” in the Company’s most recently completed Annual Information Form, and other public filings
of the Company, which include: the Company may be adversely affected by volatile solar power market and industry conditions; the execution
of the Company’s growth strategy depends upon the continued availability of third-party financing arrangements; the Company’s
future success depends partly on its ability to expand the pipeline of its energy business in several key markets; governments may revise,
reduce or eliminate incentives and policy support schemes for solar and battery storage power; general global economic conditions may
have an adverse impact on our operating performance and results of operations; the Company’s project development and construction
activities may not be successful; developing and operating solar Project exposes the Company to various risks; the Company faces a number
of risks involving Power Purchase Agreements (“PPAs”) and project-level financing arrangements; any changes to the laws,
regulations and policies that the Company is subject to may present technical, regulatory and economic barriers to the purchase and use
of solar power; the markets in which the Company competes are highly competitive and evolving quickly; an anti-circumvention investigation
could adversely affect the Company by potentially raising the prices of key supplies for the construction of solar power projects; foreign
exchange rate fluctuations; a change in the Company’s effective tax rate can have a significant adverse impact on its business;
seasonal variations in demand linked to construction cycles and weather conditions may influence the Company’s results of operations;
the Company may be unable to generate sufficient cash flows or have access to external financing; the Company may incur substantial additional
indebtedness in the future; the Company is subject to risks from supply chain issues; risks related to inflation and tariffs; unexpected
warranty expenses that may not be adequately covered by the Company’s insurance policies; if the Company is unable to attract and
retain key personnel, it may not be able to compete effectively in the renewable energy market; there are a limited number of purchasers
of utility-scale quantities of electricity; compliance with environmental laws and regulations can be expensive; corporate responsibility
may adversely impose additional costs; the future impact of any global pandemic on the Company is unknown at this time; the Company has
limited insurance coverage; the Company will be reliant on information technology systems and may be subject to damaging cyberattacks;
the Company may become subject to litigation; there is no guarantee on how the Company will use its available funds; the Company will
continue to sell securities for cash to fund operations, capital expansion, mergers and acquisitions that will dilute the current shareholders;
and future dilution as a result of financings.
The
Company undertakes no obligation to update or revise any forward-looking statements, whether as a result of new information, future
events or otherwise, except as may be required by law. New factors emerge from time to time, and it is not possible for the
Company to predict all of them, or assess the impact of each such factor or the extent to which any factor, or combination of factors,
may cause results to differ materially from those contained in any forward-looking statement. Any forward-looking statements
contained in this news release are expressly qualified in their entirety by this cautionary statement.
For further information, please contact:
PowerBank
Corporation
Tracy
Zheng
Email:
ir@powerbankcorp.com
Phone:
289.439.4718
Source:
PowerBank Corporation