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Koshidaka signs 1.6MWAC solar deal for 69 Tokyo-area sites

Koshidaka Group signed a 10-year power purchase agreement with Farmland and Eneres to supply its Tokyo-area facilities with electricity from a 1.6MWAC solar plant located in Annaka.

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Japanese group Koshidaka announced it has finalised a ten-year power purchase agreement (PPA) with Farmland, a subsidiary of Farmdo Group, to supply solar energy to its facilities in the Tokyo region. The solar plant, located in Annaka, Gunma Prefecture, has a capacity of 1.6MWAC (2.3MWDC) and will be operated via Eneres’ aggregation service.

Electricity distribution via Eneres Power Marketing

According to the published data, the plant’s output will be delivered through Eneres Power Marketing to 69 sites operated by Koshidaka, mainly Karaoke Manekineko outlets. The PPA will cover approximately 19% of the annual electricity consumption of these facilities, which is estimated at 12.7GWh.

The Annaka solar unit is expected to generate around 2.5GWh annually. According to data from the Organization for Cross-regional Coordination of Transmission Operators (OCCTO) and the Ministry of Economy, Trade and Industry (METI), the project was selected in the fiscal year 2020 solar auction with a feed-in-tariff (FIT) of JPY11.88 per kWh.

Transition to the feed-in-premium support scheme

The contract suggests that the project was transferred to the feed-in-premium (FIP) scheme at the time of commissioning to allow for the PPA while retaining partial government support. This hybrid mechanism offers producers increased flexibility while ensuring a form of complementary income.

Koshidaka operates more than 600 locations nationwide, including 129 in Tokyo and over 140 in the neighbouring prefectures of Saitama, Chiba, and Kanagawa. The company had previously signed PPAs in other regions with providers such as Marubeni Power Retail, NTT Anode Energy, PowerX, Chubu Electric Power Miraiz, and XSOL, covering 78 additional sites.

Farmland’s solar portfolio in the Gunma region

Farmland owns around 125MW of solar capacity, primarily in Gunma Prefecture. Its portfolio also includes more than 100 agrivoltaic installations totalling approximately 30MW. The company thus operates a mix of traditional ground-mounted plants and integrated agricultural solar projects.

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