Stock Market Week 30/26: RENIXX Weakens Further – SolarEdge, Sunrun, Array Technologies, Bloom Energy and Enphase Energy Post Double-Digit Losses
Münster — Oil prices rose sharply last week as the conflict between the United States and Iran escalated. Against this backdrop, the RENIXX World gained ground on the first two trading days before giving up those gains. The index slipped into negative territory on Friday and closed below the previous week's level.
Market Drivers in Focus
The escalating conflict between the United States and Iran dominated energy markets last week. Following continued US strikes on Iranian targets and Iran-backed Houthi attacks on two Saudi Arabian tankers in the Red Sea, benchmark Brent crude rose above USD 96 per barrel on Thursday, July 23, 2026 — its first move above that level since early June — briefly touching around USD 100 per barrel intraday. Brent had traded at around USD 70 per barrel in early July, with WTI at USD 87 per barrel. The rally has renewed attention on the extent to which a high share of wind, solar and battery storage capacity can cushion the pass-through of higher gas prices to power prices, an effect the International Energy Agency (IEA) recently highlighted using Australia as an example. According to the IEA's mid-year analysis, renewables are set to generate more electricity than coal-fired plants for the first time in 2026, making them the world's largest power source; global solar generation alone is expected to rise by around 610 terawatt-hours. In China, roughly 262 GW of solar and 251 GW of wind capacity were under construction as of June, according to a Bloomberg report — more than at the end of 2025, despite growing concern over curtailed, unused power.
Company News
Europe's battery storage market is shifting from a lithium-dominated landscape toward a more technology-diverse one. Dutch energy specialist Alfen and CATL, the world's largest battery manufacturer, are aiming to advance that shift by installing sodium-ion battery storage systems with a combined capacity of 5 GWh across Europe. CATL shares rose 4.2 percent last week to EUR 69.51.
Good Energy has signed what it describes as the largest supply agreement in its nearly 26-year history, with Ørsted. The two-year deal runs from October 2026 to October 2028, under which Good Energy will source 200 GWh of electricity annually from the Walney 1 and Walney 2 offshore wind farms off the coast of Cumbria, UK. Ørsted shares edged down 0.3 percent last week to EUR 19.96.
Enphase has released a software update for customers with its second-generation battery storage systems. The IQ Battery 3T and IQ Battery 10T, previously grid-tied only with no backup power function, can now be upgraded by certified installers to add backup power or additional capacity across 13 European countries. Enphase shares fell 11.3 percent last week to EUR 32.26.
Technical Picture: Index Falls Below 200-Day Line on a Closing Basis
Following its 52-week high of 1,533.57 points on June 2, 2026, the RENIXX has now corrected by around 18.7 percent. The index climbed on the first two trading days of the week to a weekly high of 1,284.45 points on Tuesday, July 21, 2026, still clearly above its 200-day moving average (GD200) of 1,262.05 points. It then reversed, closing at 1,247.34 points on Friday, July 24, 2026 — falling below the GD200 on a closing basis for the first time in months. The GD200 had served as key support throughout the current uptrend, and whether this marks a lasting break remains the key question for the broader upward trend in place since the 52-week low of 894.37 points on August 14, 2025. The 14-day RSI of 32.5 already points to a near-oversold condition. A sustained close below the GD200 would extend the consolidation toward the next support zone at 1,200 to 1,210 points, marking the low from late March 2026.
RENIXX Higher at Start of New Week
The RENIXX opened the new trading week higher, with nearly all constituent stocks trading in positive territory in early trading. Bloom Energy, Enphase Energy, SolarEdge, Ørsted and BYD posted the strongest gains, while Array Technologies, Green Plains and China Longyuan were the only stocks trading lower.
About the RENIXX World Index and the Planned RENIXX ETF
The RENIXX® World (Renewable Energy Industrial Index, ISIN: DE000RENX014) is the world's first stock index dedicated to renewable energy and the oldest global benchmark for the sector. It covers wind energy, solar energy, bioenergy, geothermal energy, hydropower, electric mobility, hydrogen and fuel cells. The index tracks 30 international companies with the highest free-float market capitalization and reflects both the performance and the global market development of the renewable energy industry. The RENIXX launched on May 1, 2006, with a base value of 1,000 points; a backward calculation to 2002 has also been carried out. The index is available through leading financial media and data providers including Bloomberg, Reuters, Financial Times, BlackRock (Aladdin) and Wallstreet Online.
To mark its 20th anniversary, IWR plans to launch an exchange-traded fund (ETF) that would make the RENIXX transparent, regulated and investable.
Source: IWR Online, 27 Jul 2026