Free PV feasibility estimate免费光伏可行性估算
A quick estimate of annual generation and, if you enter your own prices, annual value and simple payback. This is an estimate only: not a design, not a quote and not a guarantee.快速估算年发电量；如果您输入自己的电价和成本，还能估算年收益和简单回本期。这只是估算：不是设计，不是报价，也不是保证。
Result结果
Method: annual energy per kWp from PVGIS (v5.3), the free European Commission JRC tool, which covers Europe and Australia for a fixed-mounted crystalline-silicon system, 30° tilt, 14 % system losses, long-term average, at approximate city-centre coordinates (called 2026-10-29). East-West is the average of the east and west results (an estimate). Real sites differ with shading, roof pitch, equipment and local weather.方法：每 kWp 年发电量来自欧盟委员会 JRC 的免费工具 PVGIS（v5.3，覆盖欧洲和澳大利亚），按固定安装晶硅系统、倾角 30°、系统损耗 14%、长期平均值，取城市中心的近似坐标（2026-10-29 调用）。东西各半取朝东与朝西结果的平均值（估算）。实际项目会因遮挡、屋面坡度、设备和当地天气而不同。
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