Several reports this week agree that cleantech investments fell in 2013, but that's not a bad thing. And the big question is what happens next: how much more is needed?

Once again flexing its investment muscles in renewable energy, Google is expanding its future purchasing plans for wind energy in Finland and taking a stake in another a Texas wind farm. Oh, and it also bought some home energy automation startup called Nest Labs.

In December, I asked my panel of professional green money managers for their top three stock picks for 2014. You can find the full list and descriptions of the companies here.

China, the world’s biggest investor in renewable energy, reiterated plans to boost construction of solar and wind power plants along with projects to transmit electricity from the clean sources.

The Obama administration is considering cutting greenhouse-gas emissions from power plants by reaching beyond the plants themselves — an unusual approach that could run afoul of anti-pollution laws.

Does nuclear energy deserve a seat at the table alongside renewable energy technologies in weaning us off of fossil fuels and transitioning into a cleaner energy world? A new report published yesterday suggests not only will newer small modular reactor (SMR) technology be at least as expensive as larger reactors, it won't fit the needs of a more flexible grid system, and its development will siphon away funding from the truly renewable energy options that need it.

Nuclear power, which accounts for 19 percent of the nation's electricity generation, is facing some serious challenges. Not only did its hoped-for renaissance fizzle out, four reactors shut down last year, another is closing this fall, and the nuclear giant Exelon says it will announce plant closings by the end of this year if market conditions don't improve.

On what effect the U.S. Environmental Protection Agency’s (EPA) Clean Power Plan will have on transmission development in the country, including potentially a need for more transmission to transport added renewable energy, Frank Poirot, senior media specialist of transmission with Northeast Utilities (NYSE:NU) told TransmissionHub that increasing the grid's capacity to transmit power is one way to meet the growing need and enable renewable generation.

China is mandating that electric cars make up at least 30 percent of government vehicle purchases by 2016, the latest measure to fight pollution and cut energy use after exempting the autos from a purchase tax.

Bayerische Motoren Werke AG, the world’s biggest maker of luxury vehicles, is offering drivers of the i3 city car speedier and smaller auto-battery chargers in an effort to make driving electric vehicles more practical.

July was a hard month for the stock market and clean energy stocks in particular. My broad market benchmark of small cap stocks, IWM, fell 7 percent and is down 2.7 percent for the year, while my clean energy benchmark PBW fell 9% and has slid into the red for the first time. It is down 0.1 percent for the year to date.

It's the environmentalist's third rail question: "Should we promote nuclear power as an expedient way to reduce CO2 emissions?" On the one hand, nuclear power generates electricity with almost negligible CO2 emissions — potentially a good way for our society to reverse the current global warming trends. On the other hand, nuclear power is...well...nuclear. Problems related to waste disposal, proliferation and high costs have not been solved, and we still have the occasional disaster.

China is considering providing as much as 100 billion yuan ($16 billion) in government funding to build more charging facilities and spur demand for electric vehicles, according to two people familiar with the matter.

“The times they are a' changin'.” So goes Bob Dylan's classic song from the '60s, and that's certainly the case when it comes to how we generate, distribute, use and store electricity. Having made great strides in enhancing performance and reliability and reducing costs, growing government support and incentives for intelligent energy storage solutions adds significant impetus to the growing wave of change sweeping across the U.S. power sector.

Tesla Motors Inc.’s Elon Musk said the electric-car maker may form another partnership with Toyota Motor Corp., as the companies conclude an initial vehicle project that met with mixed results.

Abengoa SA, a Spanish energy and environment company, plans to issue its first green bond to raise 500 million euros ($642 million) to finance projects.

The threat of climate change is driving China and the U.S. — frequent rivals and the world’s two largest greenhouse-gas emitters — to collaborate on dozens of potential clean-energy breakthroughs.

Worries including the conflict with ISIL, Ebola, and economic slow-down in Europe, sent the stock market down in the month to October 3rd, with small cap stocks and clean energy stocks falling even farther than the large cap S&P 500.

German electricity consumers will for the first time see a drop in the fee added to their bills to fund renewables, a boost for Chancellor Angela Merkel, who has pledged to curb the cost for voters.

Last month, NRDC engaged a nationally recognized opinion research firm to conduct polling in New York State to evaluate public attitudes about fracking and clean energy. Importantly, this is the first statewide poll in at least two years — and perhaps ever — to directly ask residents their views of the now six-year-old de facto moratorium on fracking.

The Western States Petroleum Association (WSPA) — whose members include Chevron, ExxonMobil, Shell, ConocoPhillips, BP, and others — was caught red-handed late last month when a leaked internal presentation revealed a coordinated campaign to stomp out climate and clean energy progress in California, Oregon and Washington by propping up over 15 front groups that purport to represent the views of concerned citizens and the broader business community.

Let's review some notable news headlines from the month of November.

Shinzo Abe’s re-election as prime minister risks undercutting Japan’s commitment to clean energy at a time when incentives are under review and the nation’s utilities say they can’t accommodate capacity already planned.

Despite years of successful experience, dozens of studies, and increasing utility support for clean energy, urban myth holds that electricity from renewable energy is unreliable. Yet over 75,000 megawatts (MW) of wind and solar power have been integrated, reliably, into the nation’s electric grid to date. That’s enough electricity to supply 17.9 million homes.

The online community of readers who visit RenewableEnergyWorld.com is an important aspect of the news and information that we offer renewable energy stakeholders. We often post news that we feel will get people to view important topics from new angles, offering insights and opinions about technology, policy and more. Often that leads to engaging and informative discussions that add even more value to the article that we have posted.

At the close of each year, we like to take a look back to see which stories made an impact on our readers. This year's most read articles show the many twists and turns that the industry took this year and reveal interesting trends for us as editors and for other industry insiders.

2015 marks my seventh annual list of ten clean energy stocks. An equal weighted portfolio of the ten stocks in each year's list has outperformed my industry benchmark every year except 2013. 2014 was no exception, but it was a bittersweet victory in that the model portfolio was slightly down while the benchmark lost considerably more in a very challenging year for clean energy stocks.

Clean energy investments in India increased to $7.9 billion last year and are expected to surpass $10 billion in 2015.

China is mulling a policy to provide a subsidy for lithium batteries deployed in electric vehicles. This new favorable policy is expected to propel the development of the country’s electric vehicle sector. China has existing subsidy policies for the sector, but higher prices for the parts used in electric vehicles, in particular lithium batteries, prevent many consumers from purchasing the vehicles.

California’s bet on green energy is paying off, with clean technology companies creating more jobs and investing more money than competitors in any other state.

The recent dramatic plunge in oil and natural gas prices, to their lowest level since the global recession in 2009, has some observers worried about the effect on clean tech. Conventional wisdom has it that renewables have a tougher time competing when fossil fuels are cheap, making grid parity (in the case of natural gas-fired electricity) more elusive for solar and wind power.

Cleantech investing has taken quite a hit in recent years. Last year, CBS News highlighted the “cleantech crash” on U.S. primetime television, and Bloomberg New Energy Finance, a Bloomberg-owned energy data firm, has tracked the multi-year decline in cleantech investing. However, there are additional trends that tell another side of the cleantech story and suggest innovation and hope for a low-cost, low-carbon future are far from gone.

In a crammed Washington conference room last week, speaker after speaker seemed to apologize for their ‘broken record’ talking points as Bloomberg New Energy Finance and the Business Council for Sustainable Energy unveiled their annual Factbook. But, of course, they were only being honest — like 2013 before it, 2014 had been an unprecedented year for clean energy.

Last year the U.S. Environmental Protection Agency (EPA) proposed its aggressive Clean Power Plan (CPP), which calls to reduce carbon emissions 30 percent by 2030 over 2005 levels. States are required to submit reduction plans that can include increasing renewables, efficiency, and cap and trade programs by June 2016.

Apple Inc. may already be positioned to evolve into a global automaker in many ways that other Silicon Valley companies aren’t.

When I worked at the New York Attorney General's Office, we sued coal-fired power plants because their air pollution was making people sick. But in some towns, I saw that the reliance on coal really had people in a bind. The coal plant was making them sick, but it was also a major tax generator for the town. If the plant closed, the town might have to lay off teachers and cops, in addition to losing the plant jobs.

Policies favoring clean energy and increased competition would normally dim prospects for existing producers. Not in Chile, where foreign investors are driving a renewable boom at a time of surging returns by local utilities.

Business leaders have an important decision to make this year: to continue operating under the status quo or to join the list of successful companies creating a more sustainable future by contracting or investing in renewable energy and making a positive impact on their brand, customers, employees and bottom line.

We love electric vehicles (EVs) in California and we want that love to spread. Why? It isn’t because of the cool factor — though, believe me, EVs like the Tesla are undoubtedly cool. Instead, it’s because these cars can offer significant benefits to the environment, electric grid, and economy.

My Ten Clean Energy Stocks for 2015 model portfolio added a second month to its winning streak, with a 6.1 percent gain for the month and a 5.7 percent gain for the year, despite a continued drag by the strong dollar. If measured in terms of the companies' local currencies, the portfolio would have been up 7.5 percent for the month and 10.5 percent for the quarter or year to date. For comparison, the broad universe of US small cap stocks rose 1.5 percent for the month and 4.0 percent for quarter, as measured by IWM, the Russell 2000 index ETF.

China’s efforts to combat pollution are gaining momentum after President Xi Jinping pledged in March at the annual session of the National People’s Congress to punish violators of the nation’s environmental laws with an “iron hand.” Here’s what’s happening and what to expect.

Global investment in clean energy slumped 15 percent in the first quarter to the lowest level in two years because of a decline in wind and utility-scale projects.

The World Bank indicated in its new report "Building Competitive Green Industries: The Climate and Clean Technology Opportunity for Developing Countries" that small and medium-sized enterprises (SMEs) in developing countries are set to undergo significant growth and create more jobs in the field of clean technology. Anabel Gonzalez, senior director for the World Bank's Global Practice on Trade and Competitiveness, said developing home-grown clean-tech industries will help developing countries more effectively increase the adoption of low-cost clean energy and drive sustainable economic development.

A new government analysis of President Barack Obama’s signature effort to fight climate change affirms what critics suspected: the proposal could further weaken an already battered coal industry.

The process of sowing the seeds of electric vehicle infrastructure — and thereby creating a backbone of charging stations that can support these vehicles — is still in its infancy. A new report outlines the technologies and business models necessary to ramp up growth in the electric vehicle (EV) market in the United States. It also explores the relationship between charging stations and consumer purchases of EVs.

Here we are in 2019, with more than 100 U.S. cities and 140 large corporations having established 100 percent clean, carbon-free and/or renewable energy goals. In several states, newly seated governors campaigned on goals of 100 percent renewable energy, and congressional representatives have arrived in Washington positioning for a like-minded national proposal.

Global funding for clean-energy projects sagged in 2018 after China’s decision to curb subsidies dragged down installations in the world’s biggest solar market.

On January 14, 2019, California’s largest utility, PG&E, filed a bankruptcy notice stating that it plans to file for Chapter 11 bankruptcy by the month end on January 29th. Given its business situation, PG&E must proceed with the bankruptcy process unless lawmakers step in because PG&E’s current liabilities from California’s 2017 and 2018 fires are about 10 times PG&E’s current market cap of $3.5 billion, which is down 90% since last Fall. Obviously, this is a big issue for the cleantech industry since PG&E covers a territory that runs from Eureka to Bakersfield, including 106,000 miles of electric grid.

A California incubator that houses and nurtures clean-energy startups is expanding into venture capital.