Solar power in Japan
Solar power in Japan has been expanding since the late 1990s. The country is a leading manufacturer of photovoltaics and itself a large installer of domestic PV systems with most of it grid connected. The insolation is good at about 4.3 to 4.8 kWh/(m²·day). Japan is the world's fourth largest energy consumer, making solar power an important national project since the country's shift in policies toward renewables after Fukushima in 2011.
Japan was the world's second largest market for solar PV growth in 2013 and 2014, adding a record 6.9 GW and 9.6 GW of nominal nameplate capacity, respectively. By the end of 2014, cumulative capacity reached 23.3 GW, superseding those of Italy (18.5 GW) and becoming the world's third largest power producer from solar PV, behind Germany (38.2 GW) and China (28.2 GW). Overall installed capacity is now estimated to be sufficient to supply 2.5% of the nations annual electricity demands.
The Japanese government is seeking to expand solar power by enacting subsidies and a feed-in tariff (FIT). In December 2008, the Ministry of Economy, Trade and Industry announced a goal of 70% of new homes having solar power installed, and would be spending $145 million in the first quarter of 2009 to encourage home solar power. The government enacted a feed-in tariff on November, 2009 that requires utilities to purchase excess solar power sent to the grid by homes and businesses and pay twice the standard electricity rate for that power.
On June 18, 2012, a new feed-in tariff was approved, of 42 Yen/kWh, about 0.406 Euro/kWh or USD 0.534/kWh. The tariff covers the first ten years of excess generation for systems less than 10 kW, and generation for twenty years for systems over 10 kW. It became effective July 1, 2012. In 2013, Japan is expected to install 5-9 GW of solar power (nameplate wattage). In April 2013, the FIT was reduced to 37.8 Yen/kWh. The FIT was further reduced to 32 Yen/kWh in April 2014.
The government set solar PV targets in 2004 and revised them in 2009:
- 28 GW of solar PV capacity by 2020
- 53 GW of solar PV capacity by 2030
- 10% of total domestic primary energy demand met with solar PV by 2050
Solar companies of Japan include:
The Solar Ark, built in 2002, is one of the largest solar buildings in the world.
After the shift away from a nuclear power-dependent energy policy in the wake of the Fukushima nuclear accident, the first three solar plants by TEPCO were completed in 2011 and 2012, the Ukishima Solar Power Plant, 7 MW, the Ogishima Solar Power Plant, 13 MW, and the Komekurayama Solar Power Plant, 10 MW. The output of all three can be monitored on the internet.
Additional projects include the 70MW Kagoshima Nanatsujima Mega Solar Power Plant by Kyocera in Kagoshima Prefecture that went online in November 2013 and a 100 MW plant by Toshiba in Minami Soma, Fukushima Prefecture.
It is expected that many new projects will be constructed, to take advantage of the new feed-in tariff.
PV prices and production
PV growth of installations
|Source: EPIA and IEA-PVPS. All nominal capacity figures are reconverted from WAC to Wp.|
PV electricity generation
(% of consumption)
- AP Bank
- Energy in Japan
- Japanese reaction to Fukushima Daiichi nuclear disaster
- List of renewable energy topics by country
- Solar power by country
- Tetsunari Iida
- "Cumulative Installed Solar Photovoltaics Capacity in Leading Countries and the World, 2000-2013". Earth Policy Institute. June 18, 2014. Retrieved 2014-09-03.
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- "Snapshot of Global PV 1992-2014" (PDF). http://www.iea-pvps.org/index.php?id=32. International Energy Agency — Photovoltaic Power Systems Programme. 30 March 2015. Archived from the original on 30 March 2015.
- Japan renews focus on solar power
- Soto, Shigeru (2010-02-09). "Japan’s Solar Panel Sales Rise to Record on Subsidy (Update1)". BusinessWeek. Retrieved 2010-09-10.
- Japan Approves Feed-in Tariffs
- Japan To Become Land of Rising Solar
- harlen, chico (4 June 2013). "In Japan, new policy spurs solar power boom". The Washington Post. Retrieved 5 June 2013.
- Japan’s High-Cost Renewable Energy Curbs Subsidy Impact
- Chisaki Watanabe (March 2014). "Japan Cuts Subsidy for Solar Power, Boosts Offshore Wind". Bloomberg News. Retrieved 2014-04-02.
- Yamamoto, Masamichi and Osamu Ikki (2010-05-28). "National survey report of PV Power Applications in Japan 2009" (PDF). International Energy Agency. Retrieved 2010-09-10.
- UN cites solar potential as Japan scraps nuclear plan
- Solar Power Plant Facility Overview
- Mega solar power plants may be excessively concentrated in Hokkaido.
- Now Toshiba says they’re building Japan’s ‘largest’ solar plant in Fukushima
- Utility-scale solar plant for Fukushima
- One of Japan's Largest Mega Solar Projects to be Built in Aichi
- Japan to see a solar power boom
- "National Survey Report of PV Power Applications in Japan - 2012 - Third Version". International Energy Agency. 2013-06-10. Retrieved 2014-04-13.
- "Global 2013 solar installs hit 37GW: EPIA". PV-Tech. 2014-03-06. Retrieved 2014-04-13.
- Masamichi Yamamoto & Osamu Ikki (2011-07-15). "National Survey Report of PV Power Applications in Japan - 2010". International Energy Agency. Retrieved 2015-08-14.
- Hiroyuki Yamada & Osamu Ikki (2012-05-31). "National Survey Report of PV Power Applications in Japan - 2011". International Energy Agency. Retrieved 2015-08-14.
- Hiroyuki Yamada & Osamu Ikki (2014-08-27). "National Survey Report of PV Power Applications in Japan - 2013". International Energy Agency. Retrieved 2015-08-14.
- Hiroyuki Yamada & Osamu Ikki (2014-08-27). "National Survey Report of PV Power Applications in Japan - 2013". International Energy Agency. Retrieved 2014-09-03.
- Hiroyuki Yamada & Osamu Ikki (2015-07-10). "National Survey Report of PV Power Applications in Japan - 2014". International Energy Agency. Retrieved 2015-08-14.
|Wikimedia Commons has media related to Solar power in Japan.|
- Official website
- Electrical Japan: Google Maps of Power Stations (Solar) (Japanese)
- Solar Power Resources and News in the Asia-Pacific region, with focus page on Japan
- Tepco real time monitor