Summary
In Japan’s balancing market, the replacement reserve for Feed-in Tariff (RR-FIT) is a uniquely
Read more Read lessJapanese balancing power product introduced under the FIT system, designed to compensate for forecast errors in renewable energy sources (RES). Since the required amount of RR-FIT heavily depends on forecast errors, it tends to be overestimated when forecast accuracy is low.
In this paper, we propose a new method for determining the required amount by utilizing weather forecasting technology to address this challenge.
In the proposed method, a meteorological company provides the Transmission System Operator
(TSO) with the reliability rating of solar radiation forecasts, and the TSO calculates the required amount based on this information. The meteorological company uses "ensemble forecasting" as additional information for solar radiation forecasts. The TSO uses the reliability rating derived from ensemble forecasting to enable flexible determination and improved accuracy of the required amount. By applying this method, the required amount was reduced by approximately 30%, and it has already been introduced into actual operations.
Additional informations
| Publication type | Session Materials |
|---|---|
| Reference | C5_12612_2026 |
| Publication year | |
| Publisher | CIGRE |
| Country | Serbia |
| Study committees | |
| File size | 1 MB |
| Price for non member | 30 € |
| Price for member | 30 € |
Authors
NAKATA Shiho - Kansai Transmission & Distribution, Inc. JAPAN; HANAHARA Shoko - Kansai Transmission & Distribution, Inc. JAPAN; DEGUCHI Shotaro - Kansai Transmission & Distribution, Inc. JAPAN; TSUBOI Kiyohiro - Chubu Electric Power Grid Co., Inc. JAPAN; FUJIYA Takahide - Chubu Electric Power Grid Co., Inc. JAPAN; FUJITA Kentaro - Chubu Electric Power Grid Co., Inc. JAPAN; YAMAGUCHI Koji - Japan Weather Association JAPAN; KUNO Yuta - Japan Weather Association JAPAN
Keywords
Balancing Market, Renewable Energy Sources, Forecast Error, Required Balancing Reserve Volumes
