Floatovoltaics 2020: Hybrid solar projects on Thailand’s dams
Solar at sea as the Third Way for Thailand’s solar energy industries: The Thai Hydro-Floating Solar Hybrid Project
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The construction of floating photovoltaic (FPV) power plants is, after ground-based solar farms and solar rooftop facilities, the third method to develop solar energy projects. Solar panels, floating on top of the water, might become the new standard for solar energy production after the technological challenges are mastered.
As a general guideline, floating arrays are 50% more cost-effective than solar rooftops and 20% more cost-effective than land-based solar farms. If new solar and existing hydropower can be smartly hybridized overall CapEx costs and erection period can be drastically reduced. The overview of floatovoltaic advantages is published in the article “Mega Floatovoltaics in Thailand“.
Floatovoltaics will soon play an important role in the global clean energy production marketplace. Thailand covers mostly flat terrain suitable for agriculture and too good to be wasted for a land-based solar farm. Estimates state that around 3% of Thailand’s total area is water surface that could be developed for floating solar farms. In principle, Thailand could generate 6% of its total power from the floating solar farms.
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Existing landmark floating solar park projects
The first commercial installation was a 175 kWp system built at the Far Niente Winery in California in 2008. The current top ten are located in China, Japan, England, and South Korea:
|1||Coal mining subsidence area of Huainan City||40||China|
|2||Coal mining subsidence area of Huainan City||20||China|
|3||Yamakura solar power plant||13.7||Japan|
|7||Hirotani Ike Floating Solar Plant||6.8||Japan|
|8||Queen Elizabeth II Reservoir||6.338||Great Britain|
|9||Cheongpung Lake||3||South Korea|
|10||Otae Province||3||South Korea|
Thailand to build the world’s biggest floating solar farms
In March 2019, Thailand announced its intention to build 16 solar farms with a combined capacity of more than 2.7 GW in nine of its hydroelectric dam reservoirs. Several of the proposed projects are more than double the size of the world’s largest floating system now. Combined, the Thailand projects will more than triple the global floating solar capacity which is currently around 1.3 GW.
All projects will be built by the governmental utility EGAT. For some or all of these projects, EGAT teamed up with the Siam Cement Group (SCG). Private companies have the chance to participate in a bidding process for EPC engineering procurement construction agreements.
Update on the 16 floatovoltaic projects on nine dams in Thailand
The following snapshot of the current situation will be constantly updated to reflect the latest information:
Thailand Dam Location
|1||Sirindhorn (Ubon Ratchathani)||45||EPC awarded in Januar 2020 to B. Grimm Energy China consortium. COD scheduled for December 2020.|
|2||Ubol Ratana (Khon Kaen)||24||EGAT is now preparing to launch terms of reference|
|4||Ratchaprapha (Surat Thani)|
|7||Bang Lang (Pattani)|
|8||Sirikit (Uttaradit)||325||Scheduled to be completed in 2035.|
|9||Bhumibol (Tak)||Feasibility not confirmed yet.|
A Thai-Sino consortium signed in January 2020 an EPC contract with EGAT to build the hydro-floating solar hybrid project at Sirindhorn Dam. The deal to construct and install a 45 MW solar power plant on water surface combined with the existing EGAT-run hydropower is worth over THB 842 million. The consortium consists of B.Grimm Power Plc (BGRIM) together with China Energy Engineering Group Shanxi Electric Power Engineering Co., Ltd. (Energy China).
EGAT is now preparing to launch terms of reference for a new bid on a 24 MW floating solar farm at Ubol Ratana dam.
Professional service offer on solar energy projects
PUGNATORIUS Ltd. advises and assists how to successfully participate in the upcoming bidding processes for floating solar facilities on Thailand’s dams:
- Screening of the project, dam, time frame, participation requirements
- Political and economic environment, limitations for foreign investments and business activities, BOI promotion options, import requirements, visa and work permit rules, local hiring and purchase requirements, license requirements for engineering, architectural services, etc.
- Specification of detailed terms and conditions of the public tender, bid submission deadline, the method of bid price calculation, the specification of contractual terms and conditions, fit for purpose, contract templates, etc.
- Advice on PPP legislation and the Thai legal framework for renewable energy
- RFP request for proposal analysis, pre-qualification issues, and other requirements
- Price considerations and specific design proposals for the hybrid energy facilities on the dams
- Cross-border tax planning, including turnkey contract structuring
- Transactional support for the whole tender procedure, including translation of bidding documents, regulations, and supporting documents
- Legal advice on financing schemes, sovereign and commercial guarantees and other credit issues
Solar energy and other forms of renewable energy are one of the law firm’s areas of competence, long-standing experience, and unique market reputation. The scope of services cover these seven main activities:
- Scouting of market opportunities and initial assessment of project suitability
- Corporate structures
- BOI investment promotion
- Acquisition support
- Commercial contracts
- Deal arrangements
- Legal opinions
Floating solar panel market players include First Solar, Hanwha Solar, Sharp, Canadian Solar, SunPower, REC Solar, SolarWorld, Panasonic/Sanyo, Renesola, JA Solar, Motech, Gintech, LDK Solar, GCL Poly, Suntech, Yingli Solar, and Trina Solar.